What if you remembered every useful WordPress plugin you came across? That's the goal here. This page is my ongoing library of WordPress plugins and resources. Everything I want to remember gets added ASAP. It differs from many large lists in that it will be maintained year after year. Note: this work is supported by affiliate links when available. But all resources must be noteworthy in their own right, because I'm not maintaining private bookmarks anymore, this list is it. -Sean

quicklinks - Administration | Advertising | Affiliate | Analytics | Backup / Migration | Caching | Categories | Comments | Community | Compliance | Contact / Forms | CSS | Custom Fields | Directory | Donations | Ecommerce | EditorsEmailsEvents | Fonts | Gallery | Headers & Footers | Help DeskImages | Landing PagesLocal | Membership | Misc. | Multisite | Navigation | News | Notification | Optimization | Plugins (more) | PodcastingPolls | Posts | Reviews | RSSSearchSecurity | SEO | Sharing | Shortcodes | Sidebars | Sliders | Social | Tables | Widgets
see also - Conferences | ForumsPodcasts

WordPress Hosting (18)

WordPress hosting companies - information current as of March 2017.
Flywheel - Prices start at $15 per month.
WPOven - Prices start at $19.95 per month.
Pressable - Prices start at $25 per month.
WP Engine - Prices start at $29 per month.
Synthesis - Prices start at $47 per month.
Pressidium - Prices start at $49.90 per month.
Kinsta - Prices start at $100 per month.
Presslabs - Prices start at $299 per month.
Pagely - Prices start at $499 per month.

General hosting companies - information current as of March 2017.
GoDaddy - Prices start at $7.99 per month (after initial $3.99 per month).
iPage - Prices start at $9.49 per month renewal rate (after initial $3.75 per month).
SiteGround - Prices start at $9.95 per month (after initial $3.95 per month).
HostGator - Prices start at $14.95 per month (after introductory multi-month offers).
DreamHost - Prices start at $19.95 per month (the DreamPress managed plan).
Media Temple - Prices start at $20 per month.
Bluehost - Prices start at $39.99 per month (after initial $19.99 per month).

Themes (36)

marketplaces - information current as of March 2017.
Theme Forest - 9,292 WordPress themes.
CreativeMarket - 2,998 WordPress themes.
TemplateMonster - 1,366 WordPress themes.
Mojo Themes - 1,192 WordPress themes.

providers - information current as of March 2017.
MyThemeShop - 135 themes
Rocket Theme - 102 themes
SKT Themes - 101 themes
Templatic - 98 themes
Elegant Themes - 87 themes
CSS Igniter - 82 themes
SoloStream - 69 themes
Tesla Themes - 66 themes
Graph Paper Press - 61 themes
StudioPress - 60 themes
Kopa Theme - 53 themes
Theme Junkie - 52 themes
ThemeFuse - 47 themes
CyberChimps - 44 themes
Themify - 43 themes
WP Zoom - 36 themes
ThemeIsle - 34 themes
Organic Themes - 30 themes
Gorilla Themes - 29 themes
Premium Coding - 28 themes
Obox Themes - 27 themes
Themezilla - 27 themes
Gabfire - 23 themes
Press75 - 22 themes
Array Themes - 19 themes
WPeka - 17 themes
WPlook Studio - 17 themes
Themes Kingdom - 12 themes
The Theme Foundry - 12 themes
Themeum - 6 themes
UpThemes - ? themes
plugins
Theme Check - test your theme for all the latest WordPress standards and practices.

Support (1)

WP Curve - monthly plans starting at $79 per month, or single 30 minute job for $79.


More Plugins (2)

marketplaces
CodeCanyon - 1000s of premium plugins, with some helpful sorting and filtering options.
WordPress.com Plugin Directory - tens of 1000s of plugins and a frustrating search results page.

Administration (13)

Admin Columns - free/$ - custom columns, pro version allows sorting, filtering, inline editing.
Admin Menu Editor - free/$ - edit admin menu: re-order, hide, rename, add custom menus and more.
Adminize - free - lets you hide 'unnecessary' items from the WordPress backend.
OptionTree - free - create fully responsive option panels and meta boxes.
finding & replacing
Better Search & Replace - free/$ - tries to consolidate the best features of several similar plugins.
Search & Replace - free - their stated goal is to give you a good solution for both developers and users.
Search Regex - free - very powerful, for people who are comfortable with regex.
Real-Time Find and Replace - free/$ - replace code/text from themes/plugins before a page is served.
user management
WPFront User Role Editor - free/$ - manage WordPress user roles within your site.
Simple History - free - see who created a page, uploaded an attachment, approved a comment, more.
white labeling
White Label WP - $ - allows complete customization of dashboard panels and logos, much more.
maintenance mode
Coming Soon and Maintenance Mode by Seedprod - free/$ - flexible, premium version available.
Maintenance Mode - free - lightweight, focused on simplicity.
tags: #wp-admin | #permission | #role | #maintenance

Advertising (5)

AdSanity - $ - banner management system.
Advanced Ads - free/$ - ad management system, many features and add-ons available.
WP Simple AdSense Insertion - insert Google AdSense to your posts, pages and sidebar.
Facebook
Pixel Caffeine (by AdEspresso) - free - add FB pixel, conversion tracking, create custom audiences.
classifieds
WPAdverts - free/$ - build a classified ads sysem within WordPress.
tags: #advertising | #adsense

Affiliate (5)

AffiliateWP - $ - for people who want to run their own affiliate program, many add-ons available.
Affiliates Manager - $ - another aff mgt option, integrates with many WP ecommerce solutions.
ThirstyAffiliates - $ - for publishers who want tools to increase their affiliate marketing earnings.
Easy Affiliate Links - free - advanced features to help manage your affiliate links.
Amazon JS - free - displays Amazon products on your WordPress posts.
tags: #affiliate marketing | #affiliate | #affiliate

Analytics (7)

Google Analytics
Google Analytics by Monsters Insights - free/$ - configuration & reporting, formerly by Yoast.
Better Google Analytics - free/$ -  track clicked links, emails opened, YouTube videos watched, etc.
Google Analytics Dashboard for WP - free - configuration & reporting.
tag management
DuracellTomi's Google Tag Manager for WordPress - places GTM container code snippet.
Tracking Code Manager - free/$ - manage tracking codes and conversion pixels.
Insert Headers and Footers - free - insert tracking codes, scripts or CSS above or below your content.
other analytics
Slimstat Analytics - free/$ - real-time access logs, very customizable.
tags: #analytics#tracking | #google analytics

Backup / Migration (7)

Duplicator - free/$ - duplicate and migrate entire sites, pro version has more features and support.
All-in-One WP Migration - free/$ - premium extensions for multisite and various export/import locations.
UpdraftPlus - free/$ - backup and restoration, premium version with more features, multisite, support.
BlogVault - plans with savings for multiple sites, plus an unlimited site plan (limited by space).
BackupBuddy - plans with savings for multiple sites, plus a 'lifetime' plan (with certain limits).
WPBackItUp - plans with savings for multiple sites.
VaultPress - $ - backup and security from Automattic, basic and premium options.
tags: #backup | #migration

Caching (3)

W3 Total Cache - free/$ - many features and supports CDNs, premium service is available.
WP Super Cache - free - generates static html files that will be served to the vast majority of your users.
WP Rocket - $ - focused on ease of use, one-time license fee, updates & support after year 1 = optional.
tags: #cache | #caching | #cdn

Categories (4)

Ultimate Category Excluder - free - exclude categories from front page, archives, feeds, search results.
Category Sticky Post - free - mark a post to be placed at the top of a specified category archive.
Allow HTML in Category Descriptions - free - use unfiltered HTML in your category descriptions.
Add Category to Pages - free - add categories and tags to your WordPress pages.
tags: #category | #categories

Comments (14)

systems
Disqus - system that hosts your comments, with some different features than default WordPress.
de:Comments - $ - builds an enhanced system on top of the WordPress commenting system.
features
Subscribe to Comments Reloaded - lets commenters sign up for e-mail notifications of replies.
Postmatic - free/$ - let commenters subscribe by email, and reply to new comments in email.
Commenter Emails - extract a listing of all commenter emails.
Disable Comments - globally disable comments on any post type.
Delete All Comments Easily - delete all comments from your database easily.
Yoast Comment Hacks - free - adds some simple hacks to make comment management easier.
CommentLuv - free/$ - reward commenters by linking to their last blog post after their comment.
avatars
Avatar Manager - free - plugin for storing avatars locally and more.
Add New Default Avatar - free - add new options to the Default Avatar list.
anti-spam
Akismet - free/$ - automatically reduces comment spam.
Anti-Spam - reduce comment spam without annoying captchas.
Antispam Bee - free - blocks spam comments and trackbacks without captchas.
tags: #comments | #comment moderation | #comment spam

Community (4)

bbPress - free - forum software built on top of WordPress.
BuddyPress - free - social network software built on top of WordPress.
PeepSo - free/$ - add a community (similar to Facebook) on your WordPress site.
AnsPress - free/$ - plugin and themes for Q&A sections, paid extensions available.
tags: #community | #discussion | #forums

Compliance (2)

Legal Pages - free/$ - many customizable policies (privacy, disclosures, disclaimers...)
Cookie Consent - free - feature rich plugin to help comply with EU cookie regulations.

Contact / Forms (10)

advanced forms
Gravity Forms - create advanced forms, integrate with many types of online services.
Ninja Forms - flexible form builder, built with developers in mind.
WPForms - drag & drop form builder.
Formidable Pro - quickly build many types of forms.
free contact forms
Contact Form 7 - free - popular contact plugin, extended by many other plugins.
Fast Secure Contact Form - free - another popular contact plugin.
Leadin - free - contact forms and lead tracking / marketing analytics.
anti-spam
Contact Form 7 Honeypot - reduce contact form spam without annoying captchas.
Really Simple CAPTCHA - if honeypots fail and you really need an annoying captcha.
Captcha - add a captcha to all kinds of forms: login, reset password, contact, comment, etc.
tags: #contact form | #contact | #form | #feedback | #contactform7

CSS (1)

Simple Custom CSS - add custom CSS styles that override Plugin and Theme default styles.
tags: #custom css | #styles

Custom Fields (3)

Advanced Custom Fields - free/$ - popular plugin that enables many custom field types.
Custom Field Suite - free - visual custom fields management plugin.
Custom Post Types and Custom Fields creator - free/$ - custom fields, custom post types and taxonomies.
tags: #custom field | #custom fields | #fields

Developer (2)

Query Monitor - free - view debugging/performance on database queries, hooks, conditionals, more.
FakerPress - free - generate dummy content to your WordPress installation, useful for testing.
tags: #developer | #development

Directory (3)

Business Directory Plugin - free/$ - basic plugin for free, several premium add-ons available.
GeoDirectory - free/$ - location based business directory, several premium add-ons available.
Connections Business Directory - free/$ - create addressbook, business/member directory, more.
tags: #directory | #business-directory

Donations (3)

Give - free/$ - robust plugin for accepting donations, premium add-ons available.
Charitable - free/$ - robust plugin for accepting donations, premium add-ons available.
Donorbox - free/$ - embed an recurring donation form, free 1st $1000/mo, then 0.89% fee.
tags: #donations

Ecommerce (20)

WooCommerce - free - most popular WordPress storefront, many free and premium extensions.
woocommerce
- suites - 

WooCommerce Extensions - free/$ - hundreds of free and premium ecommerce extensions.
WooCommerce Customizer - free/$ - helps customize WooCommerce without writing any code.
Booster for WooCommerce - free/$ - 50 modules for popular features, all in one plugin.
- cart -
WooCommerce Menu Cart - free/$ - automatically displays a shopping cart in your menu bar.
WooCommerce Cart Tab - free - add site-wide link to cart which reveals the cart contents on hover.
- comparison -
YITH WooCommerce Compare - free/$ - allow users to compare products in one complete table.
YITH WooCommerce Ajax Product Filter - free/$ - allows users to filter products.
WooCommerce Products Filter - free/$ - allows users to filter products.
YIKES Custom Product Tabs for WooCommerce - free - create custom tabs for products.
- customer -
Status Tracking - free/$ - let customers track their orders.
- pricing -
WooCommerce Bulk Discount - free - apply fine-grained bulk discounts to items in the shopping cart.
- shipping -
WooCommerce Advanced Free Shipping - free - set up advanced free shipping conditions.
WooCommerce Advanced Shipping - $ - set up all of your shipping based on conditions.
PDF Invoices & Packing Slips - free/$ - create, print & automatically email PDF invoices & packing slips.
AfterShip WooCommerce Tracking - free/$ - add tracking number and carrier name to WooCommerce, etc.
WooCommerce Stock Manager - free - manage stock for products and their variables from one screen.
- analytics -
WooCommerce AdWords Conversion Tracking - free - tracks value of WooCommerce orders in Google AdWords.
WooCommerce AdWords Dynamic Remarketing - free - insert the customized remarketing pixel on your shop pages.
- importing / exporting -
WooCommerce Store Exporter - free/$ - export store details into CSV, XML, Excel 2007, XLS, etc.
tags: #cart | #e-commerce | #ecommerce | #shop | #store | #woocommerce

Editors (13)

front-end editors
Beaver Builder - $ - many developers favor it for the relatively clean code.
3rd party Beaver tools: Ultimate Addons for Beaver | Beaver Addons
see also: list of Beaver Builder plugins at Pro Beaver
Page Builder by SiteOrigin - free/$ - enhanced builder with SiteOrigin Premium.
Visual Composer - $ - sold for individual sites basis.
MotoPress Content Editor - $ - plans for 1, 5, or an unlimited amount of sites.
Editus - $ - plans for 3, 5 or an unlimited amount of sites.
The Divi Builder - $ - available as part of the theme/plugin club at Elegant Themes.
Themify Builder - $ - available as standalone plugin or as part of any Themify themes.
Live Composer - free - no shortcodes left if deactivated.
default editor +
TinyMCE Advanced - free - extends and enhances the WordPress editor toolbar.
widgets
Black Studio TinyMCE Widget - free - format widget content just like posts/pages.

Email (11)

newsletters
MailPoet Newsletters - free/$ - send newsletters post notifications or autoresponders from WordPress.
Newsletter - free/$ - add a newsletter system to your blog, with unlimited newsletters and subscribers.
integration
MailChimp for WordPress - free/$ - subscribe your WordPress visitors to your MailChimp lists.
WP Subscribe - free - subscription plugin which supports MailChimp, Aweber and Feedburner.
lead capture
Thrive Leads - $ - build and test a variety of opt-in forms, available for a one-time cost.
Bloom - $ - build/test opt-in forms, get all themes/plugins from Elegant Themes for one price.
Pippity - $ - build/test opt-in forms, available for a recurring yearly cost.
Icegram - free/$ - all-in-one plugin for onsite visitor engagement, free with paid extensions.
GetSiteControl - free/$ - email opt-in forms, along with survey forms, follow buttons, and more.
KingSumo - $ - grow your email list with viral giveaways.
anti-spam
Email Address Encoder - free - protect email addresses from email-harvesting robots.
tags: #newsletter | #mailchimp

Events (7)

event calendars
The Events Calendar - many features for calendars, addons available to sell tickets etc.
Event Organizer - focused on event management, several premium extensions available.
Events Manager - create events, accept bookings, manage attendees, pro version available.
Event Espresso - event registration & ticketing management, many premium addons.
booking calendars
Booking Calendar - free/$ - many examples: client scheduling, resource scheduling, event schedule, more.
WP Simple Booking Calendar - free/$ - examples are room, bed & breakfast, office, piece of equipment.
Pinpoint Booking System Pro - $ - examples include rooms, restaurants, services, clubs, more.
tags: #event | #appointment | #availability calendar | #bookings | #booking calendar | #reservations

Fonts (2)

Use Any Font - embed any font on your website.
Easy Google Fonts - add and preview Google fonts without any coding.
tags: #fonts | #webfonts | #typography

Gallery (5)

Foo Gallery - free - highly-rated plugin, aims to be simple for users and highly flexible for developers.
Gallery - free/$ - highly-rated, premium add-ons include ecommerce, FB integration, export/import.
NextGEN Gallery - free/$ - extremely popular despite lower rating, premium version has e-commerce.
Envira Gallery - free/$ - another option, with free/premium versions.
HUGE-IT Portfolio Gallery - free/$ - for adding specialized portfolio gallery of images or videos.
tags: #gallery | #album | #portfolio | #slideshow

Headers & Footers (3)

Header and Footer - add html code to the head and footer sections of your site.
Insert Headers & Footers - add scripts to header and footer by hooking into wp_head and wp_footer.
Footer Putter - helps add common footer items and credibility indicators.
tags: #header | #footer

Help Desk (1)

Awesome Support - free / (premium add-ons) - offer support directly from your WP site.
tags: #help#helpdesk | #support

Images (10)

media management
Media Library Assistant - free - taxonomy support, bulk/quick edit actions, where-used reporting, more.
Enhanced Media Library - free/$ - categories and tags, filtering and order, compatible with popular plugins.
Media from FTP - free - register to media library from files that have been uploaded by FTP.
image size management
Imsanity - free - resizes images, for when you don't need big originals or users don't understand sizes.
image compression
EWWW Image Optimizer - free/$ - reduce image sizes in WP, including several popular galleries.
TinyPNG - free/$ - reduced JPEG and PNG sizes by connecting to an external compression service.
WP Smush - free/$ - another image file size optimization tool.
thumbnails
Regenerate Thumbnails - free - regenerate your thumbnails after changing the thumbnail sizes.
widget
Image Widget - free - simple yet versatile widget for displaying images.
other
RICG Responsive Images - free - works by including all available image sizes for each image upload.

tags: #image | #photo | #picture | #resize | #thumbnail

Industry-Specific (1)

Food
WP Ultimate Recipe - easily at recipes to your posts and pages, with the recipe-related markup.

Landing Pages (2)

OptimizePress - $ - WordPress theme for creating landing pages, sales pages, membership portals.
Launch Effect - $ - one-page WordPress theme for viral launches.
tags: #landing page | #launch page

Local (6)

reviews
Yoast Local SEO - $ - insert maps and store locator, add local business information.
Yelp Widget Pro - free/$ - add Yelp business listings to your website via a widget.
Yellow Pages Reviews - free/$ - add YP reviews to your website via widget or shortcode.
schema
Business Profile - free - display your business's contact details with seo-friendly Schema.org markup.
maps
WP Google Maps - free/$ - create custom Google maps with categories, descriptions, images and links.
Maps Builder - visually build customized Google Maps without ever having to touch a bit of code.
tags: #local seo

Membership (5)

MemberPress - popular membership plugin available via yearly subscription.
Restrict Content Pro - many features, yearly or one-time pricing options.
iThemes Exchange - simple but extendable membership plugin.
WooCommerce Memberships - sell memberships from your WooCommerce store.
Memberium - membership plugin to connect Infusionsoft and WordPress.
tags: #membership

Multisite (3)

InfiniteWP Client - free/$ - manage unlimited sites from a central dashboard.
ManageWP Worker - free/$ - see stats and manage sites from one dashboard.
iControlWP - free/$ - manage all websites from a single, centralized control panel.
tags: #multisite

Navigation (4)

menus:
Max Mega Menu - free/$ - complete menu management plugin, add any widget to your menu, restyle, more.
Category Posts in Custom Menu - free - list all posts from a category in your menu. Also works for tags, more.
in-page:
WP PageNavi - free - adds a more advanced paging navigation interface.
Breadcrumb NavXT - free - adds breadcrumb navigation showing the visitor's path to their current location.
tags: #navigation | #pagination | #menu

Notification Bars (3)

WP Notification Bars - free - create custom notification bars.
WP Notification Bar Pro - $ - create custom notification bars, with even more options.
WPFront Notification Bar - free - create a bar on top or bottom to display a notification.
tags: #notification bar

News (3)

WP News and Scrolling Widgets - free/$ - add news custom post type and news widget.
News Announcement Scroll - free - simple vertical scroll news widget.
Ditty News Ticker - free/$ - add custom news tickers to your site (scrolling, rotating, list).
tags: #news | #latest news | #news widget

Optimization (2)

WP Optimize - clean up your WordPress database and optimize it without doing manual queries.
Optimize Database after Deleting Revisions - 'one click' WordPress database cleaner / optimizer.
tags: #optimize | #clean

Podcasting (3)

Blubrry PowerPress Podcasting - free/$ - simple & advanced modes, premium options.
Smart Podcast Player - $ - customizable player focused on aesthetics and usability.
Seriously Simple Podcasting - free - variety of features to help manage your podcasts.
tags: #podcast | #audio

Polls (2)

WP-Polls - free - the most popular free polling plugin.
YOP Poll - free - another option.
tags: #poll | #survey | #vote

Posts (19)

related
Yet Another Related Posts Plugin (YARPP) - free/$ - popular, premium option for sponsored content.
Jetpack - suite of plugins, includes a Related Posts plugin, focused on minimizing server load.
Related Posts for WordPress - free/$ - uses caching for faster loading, premium option has more features.
popular
WordPress Popular Posts - free - displays the most popular posts on your blog, highly customizable.
Jetpack - suite of plugins, includes a Top Posts & Pages Widget.
WP Tab Widget - free - choose between, Popular, Recent, Comments, Tags tab.
Top 10 - free- another popular posts plugin with a variety of features.
types
Pods - framework for creating, managing, and deploying customized content types.
Custom Post Type UI - free/premium upgrade - create custom post types and taxonomies.
Toolset Types - manages custom post types, custom taxonomies and custom fields.
Easy Content Types - custom post types, taxonomies and metaboxes.
rating
WP-PostRatings - free - add an AJAX rating system for your blog's post/page.
cloning
Duplicate Post - free - clone a post or page, or edit it as a new draft.
planning
Editorial Calendar - free - gives you an overview of your blog and when each post will be published.
Edit Flow - free - collaborate with your editorial team inside WordPress.
CoSchedule - editorial calendar for content marketing and social scheduling.
misc.
Public Post Preview - free - lets you give a link to anonymous users to publicly preview a post before publishing.
WP Old Post Date Remover - free - removes date stamp from older posts, while leaving it on newer posts.
Liveblog - free - quick and simple blogging for following fast-paced events.
Just Writing - free - plugin to help with distraction free writing.
tags: #related posts | #popular | #postrating | #custom post types | #duplicate posts | #editorial calendar

Reviews (3)

WP Product Review - $ - also includes amazon integration, comparison chart features.
WP Customer Reviews - allows your visitors to leave business / product reviews.
Good Reviews for WordPress - add reviews and testimonials (does not allow user submitted reviews).
tags: #rating | #reviews | #testimonials

RSS (2)

Category Specific RSS feed Subscription - add category RSS feed menu to posts, pages and sidebar.
FEEDZY RSS Feeds - aggregate and show RSS feeds into your WordPress website.
tags: #rss | #feed

Search (3)

SearchWP - $ - more control over search, from what pages are included to how they are ranked.
Relevanssi - free/$ - fuzzy matching, autocomplete suggestions, control over indexing.
faceted search
FacetWP - $ - true faceted search, only relevant facet choices are shown.
tags: #rss

Security (11)

security suites
Wordfence - free/$ - offers various firewall, blocking, login , scanning and monitoring, features.
All In One WP Security & Firewall - features for accounts, login, firewall, file system, many more.
iThemes Security (formerly Better WP Security) - premium service offers 30+ security features.
2-factor authentication
Rublon Two-Factor Authentication - free/$ - free for 1 user, premium option for multiple users.
Google Authenticator - Two Factor Authentication - free/$ - another option, free for 1 user.
other login protection
Login Lockdown - lock out IP addresses after a certain # of failed logins, can also block IP ranges.
Rename wp-login.php - free - change wp-login.php to anything you want.
Jetpack - suite of plugins, incorporated features from BruteProtect, formerly a standalone plugin.
Force Strong Passwords - WP includes password strength indicator, this enforces password strength.
misc.
BBQ: Block Bad Queries - free/$ - firewall plugin protects your site against malicious URL requests.
tags: #security | #authentication | #firewall#login#passwords | #permissions | #protection

SEO (14)

configuration
Yoast SEO - includes many SEO configuration options, plus page-level analysis.
All In One SEO Pack - includes many SEO configuration options.
redirection
Redirection - automatic 301 redirection, manual redirection options, 404 monitoring.
Quick Page/Post Redirect Plugin - redirects from a central admin page, or individual page/post.
Safe Redirect Manager - another redirect plugin, worth a look if other ones don't meet your needs.
Linker - free - another redirect plugin, worth a look if other ones don't meet your needs.
Pretty Link - free/$ - shrink, beautify, track, manage and share any URL on or off your WordPress site.
Page Links To - free - link a WordPress page (or other content type) to an external URL of your choosing.
sitemaps
Google XML Sitemap - create XML sitemap readable by Google and other search engines.
meta data
WP SEO Structured Data Schema - comprehensive plugin based on JSON-LD.
All In One Schema.org Rich Snippets - supports most schema, notable exception is Local Business.
WPSSO - creates markup for social sharing optimization (SSO).
misc.
Title and Nofollow for Links - free - restores Title field in 'insert link' box, adds rel="nofollow" option.
WP Broken Link Status Checker - free - checks for broken links, link redirections, nofollow links, etc.
tags: #seo | #search engine optimization | #sitemap | #microdata | #microformat | #schema.org

Sharing (5)

Floating Social Bar - focuses on loading social buttons efficiently, minimizing site slowdown.
Jetpack - suite of plugins, includes a Social Sharing plugin.
Simple Sharing icons - another option.
AddToAny Share Buttons - one of the first social sharing services, many features.
AddThis Share Buttons - one of the first social sharing services, many features.
tags: #share buttons | #social buttons

Shortcodes (2)

Shortcodes Ultimate - free/$ - 50+ shortcodes, shortcode generator, premium add-ons.
Widget Shortcode - free - enables you to output widgets anywhere you like.
tags: #shortcodes

Sidebars (3)

Custom Sidebars - free/$ - display custom widget configurations for every page or post.
Content Aware Sidebars - free/$ - display custom sidebars on any post, page, category etc.
Simple Page Sidebars - free - assign custom, widget-enabled sidebars to any page.
tags: #sidebars | #custom sidebars

Sliders (4)

Slider Revolution - $ - feature-rich plugin to create sliders, carousels, hero scenes.
Meta Slider - free/$ - free option for basic features, paid option for extra features.
Master Slider - free/$ - free option for basic features, paid option for extra features.
Crelly Slider - free - open source responsive WordPress slider that supports layers.
tags: #slider#carousel | #slideshow

Social (20)

General
Super Socializer - free/$ - tool for social sharing, social login and social commending.
Feed Them Social - free/$ - custom feeds for Facebook, Instagram, Twitter, Vine, Pinterest, etc.
Social Icons Widget by WPZOOM - free - displays links to more than 80 sites, with 400 icons.
OnePress Social Locker - free/$ - asks visitors "to pay" for content with a tweet, +1, or like.
Facebook

Custom Facebook Feed - display customizable Facebook feeds on your website.
Easy Facebook Like Box - display custom Facebook feed, page plugin (like box), like button.
Facebook Widget - add a Simple Facebook page Like Widget into your sidebar or footer area.
Facebook comments WordPress - display Facebook Comments on your website.
Twitter
Rotating Tweets - widget and shortcode to show latest tweets one at a time an animated rotation.
Twitter Widget with Styling - Twitter Widget that is easy to configure and easy to style.
Better Click To Tweet - free - insert click to tweet boxes into your posts. Customizable.
Instagram
Instagram Feed - display customizable feeds from multiple Instagram accounts.
Instagram Feed WD - display user or hashtag-based feeds on your website with only few clicks.
Instagram Widget by WPZOOM - customisable and responsive Instagram timeline widget.
Instagram Slider Widget - responsive slider widget for a user or hashtag.
Pinterest
Pinterest "Pin It" Button - free/$ - many features, premium version with even more features.
jQuery Pin It Button For Images - free/$ - adds "Pin It" button on hover, pro adds touch devices.
YouTube
YouTube Embed Plugin - free/$ - embed a responsive video, channel gallery, or playlist gallery.
YouTube Channel Gallery - free - show a YouTube video and a gallery of thumbnails for a channel.
YouTube Widget Responsive - free - embed YouTube in your sidebar or in your content.
tags: #social media | #facebook| #twitter | #instagram | #pinterest | #youtube

Tables (1)

TablePress - free/$ - add tables to posts and pages, offers premium extensions.
tags: #table | #data

Widgets (6)

Widget Logic - free - control which pages widgets appear using WP's conditional tags.
Restrict Widgets - free - hide or display widgets on specified pages and restrict access for users.
Display Widgets - free - hide widgets on specified pages.
Widgets on Pages - free - add widgets or sidebars to posts/pages using shortcodes or template tags.
Gabfire Widget Pack - free - over a dozen commonly-used widgets.
Q2W3 Fixed Widget - free - fixes positioning of selected widgets, when the page is scrolled down.

Misc. (2)

404page - free - set any page as custom 404 error page, no coding needed.


Forums & Hangouts

wordpress.org/support/ - official forums for general support issues.
wordpress.stackexchange.com - not as busy, but another resource.
reddit.com/r/wordpress - the largest WordPress subreddit.
quora.com/topic/wordpress - the largest WordPress Quora topic.
Also find the forums of your theme provider, plugin providers, etc.

Podcasts

WP Tavern - weekly - live - in-depth podcasts that talks about all things WordPress.
Post Status - every few weeks - informing WordPress professionals and enthusiasts about the industry.
Office Hours - weekly - interviews with leaders in the WordPress community, plus some informal group chats.
Matt Report - mostly weekly - interviews with leaders in the WordPress community.
The WordPress Chick - weekly - WordPress made easy, with a focus on growing your business.
WordPress Plugins A to Z - weekly - focuses exclusively on exploring interesting plugins.
WP Elevation - sporadic - WordPress business podcasts, interviews with successful entrepreneurs.

Blogs

Official
wordpress.org blog

General
WP Beginner
WP Explorer
WP Mayor
WP Lift
Winning WP
WordPress Tavern

Examples
Designcrazed

Conferences

WordCamp - informal, community-organized events around the world.
PressNomics - for those who power the WordPress economy.
LoopConf - for WordPress developers.
A Day of REST - all about the WordPress REST API.
WooConf - WooCommerce developers conference.
WPCampus - where WordPress meets higher education.