Below is an outline of the social media services and tools in the digital marketing tools index.

Click on the link below each section for a page with more detail.

Social Media Management

Hootsuite – $ – Social media management software. Free plan with limitations. 30 day free trial.
Sprout Social – $$ – Social media management software. 30 day free trial.
Buffer – $ – Social media management software. Free plan with limitations.
Sendible – $$ – Social media management software. 30 day free trial.
Edgar – $$ – “The social media queue that never runs out.”
Oktopost – $$ – Positions itself as a tool for B2B social media management. 30 day free trial.
OnlyWire – ? – “Post content to 50 social profiles at once.”
SocialCast (formerly MarketMeSuite) – ? – is “now on a break” not sure if/when it will come back.

Social Media Monitoring

Postific – $ – Social media dashboard – market, manage, monitor and analyze at the same time, from the same place. 30 day free trial.
Mention – Get these mentions from billions of sources in real time. Free plan with limited mentions. Paid plans starting at $29 per month.
Colibri IO – $ – Find opportunities on social networks and in search engines. 14 day free trial.
Trackur – $$ – Quickly see who’s talking about your company, executives, products, employees, competitors and more. 10 day free trial.
Keyhole – $$ – Measure social campaigns, identify influencers and share reports. 3 day free trial.
BuzzBundle – $ – Social media management software. Free plan with limited mentions. Paid software ranges from $199 to $399.
NutshellMail – free – Summary of your social media activity, delivered to your email inbox on your schedule.
Brandwatch – request demo for pricing – Social media monitoring and analysis tools.
Sysomos – request demo for pricing – Social media monitoring tools.
Radian6 (SalesForce Marketing Cloud) – request demo for pricing – Track, monitor, and react to comments, questions, and complaints as they happen.

Social Media Analytics

Social Analytics – free – Google Chrome browser extension. Displays key figures for Facebook, Twitter, Google+, Pinterest and many more social media platforms.
Crowdbooster – $ – Works with Twitter accounts & Facebook pages to give you data to get your reporting done quickly. 30 day free trial.
Social Report – $ – All-in-one social media management and reporting solution. 30 day free trial.
SharedCount – $$ – Track URL shares, likes, and more. Free plan with limitations.
Socialbakers Analytics – $$ – Competitive social media analytics made easy. Custom benchmarking, competitive social analytics, unique KPIs, and one-click reporting.
quintly – $$ – Benchmark your own numbers against your competitors. Free plan with limitations. 14 day free trial on paid plans.
Simply Measured – $$$ – “The most complete social analytics solution designed for the world’s biggest brands.”
Curalate – Visual analytics connects products with referral revenue, giving brands the data needed to prove an ROI on their social efforts.

Influencer Marketing

Klout – Home of the Klout Score… a number between 1-100 that represents your influence.
Kred – free/paid – Home of the Kred score, composed of two scores: Influence & Outreach.
Pitchbox – $ – Influencer outreach and content marketing platform. 15 day free trial.
Traackr – ? – Influencer management platform. Contact for pricing.
Content BLVD – Marketplace for YouTube product placements.
Little Bird – ? – Find the most relevant, credible influencers and content. Pricing?
Social Crawlytics – ? – Identify the influencers & your competitor’s most shared content. Pricing?
PeerReach – ? – “Join the right conversations with the right people.” Pricing?
Conspire – free? – Unlock your professional network to uncover your best paths to people, ideas, resources and opportunities.
ConnectUp – free/paid – Combine and reach your contacts from various platforms.
Triberr – “A community of talented Bloggers and Influencers come together to read and share great content.”

Social Sharing Tools

AddThis – free or $ – Add sharing buttons for Facebook, Twitter, Pinterest, LinkedIn, Email, more.
Facebook: Social Plugins – free – See what Facebook friends have liked, shared, or commented on across the Web.
LinkedIn: Plugins – free – Plugins are a quick way to drop LinkedIn functionality into your website.
Pinterest: Goodies – free – Got a site of your own? Help Pinners follow and share your work.

Facebook Analysis & Management

Fanpage Karma – free analysis with signup – Paid plans for full features. 14-day free trial. Analysis of content, times & types, influencers, fan posts, ad value, history & benchmarking, videos.
Agorapulse Barometer – free – benchmark your Facebook page and posts: reach, engagement, people talking about, negative feedback, and more.
LikeAlyzer – free – Measure and analyze the potential and effectiveness of your Facebook Pages.
Wolfram|Alpha Personal Analytics for Facebook – free – Generate an analysis of your activity on Facebook.
EdgeRank Checker – contact for pricing – Tour with example of features is here.

Twitter Analysis & Management

Commun.it – $ – Twitter community management dashboard. 14 day free trial.
TweetDeck – free – Twitter management tool (bought by Twitter).
Tweet4me – free? – Schedule or buffer a Tweet for any date, any time and from any Twitter application.
SocialBro Free Analysis Tool – free w/ limits – learn about followers, times to tweet, who to follow, more.
Twellow – free – Find relevant Twitter users by geography or category.
Tweriod – free w/ limits – Analyse both your tweets and your followers’ tweets to find the best times to tweet.
Tweepi – free/paid – Manage and grow your Twitter account.
Twitter Counter – $ – Actionable Twitters stats for agencies, brands and individuals.
ManageFlitter – free/paid – Suite of tools for working faster & smart with Twitter.
SocialBro – contact for pricing – “Everything you need to optimise your Twitter strategy.”
TweetReach – $$ – Analyze any Twitter hashtag, account or keywords.
Followerwonk – free w/ limits – Pro subscription is part of the Moz suite of SEO/Marketing tools.
Tweetwall – $$ – “We make it simple to beautifully display your #hashtag at your event.”

Instagram Analysis & Management

Hootsuite – $ – Single dashboard to manage Instagram, Facebook, Twitter, Google+ all at once. Free plan with limitations. 30 day free trial on paid plans.
ScheduGram – $ – Features web uploading of images or video, scheduling for later, and supports multiple accounts. 7 day free trial.
Latergramme – $ – Schedule and manage your Instagram posts. Free plan with limitations.
Onlypult – $ – Service for scheduled posts, analytics and fast content development. 7 day free trial.
TakeOff (from CrowdFire) – ? – Timing suggestions, tag suggestions, collaborate with clients or team members.
Iconosquare – ? – Advanced analytics about your Instagram account.

Pinterest Analysis & Management

Pinvolve – $ – With paid plans, Pinvolve automatically posts your Pinterest pins to your Facebook business page.
Tailwind – $ to $$$ – Discover content, schedule posts, monitor conversations, launch promotions, analyze results.
Viralwoot – ? – Schedule pins, create pin alerts, and more.
PinAlerts – free – Setup PinAlerts and get email notifications when someone pins something from your site.
Pinterest “Pin It” Button Plugin – free – WordPress plugin. Add a Pinterest “Pin It” button to your posts.
jQuery Pin It Button For Images – free – WordPress Plugin. Adds a Pinterest “Pin It” button to images on hover.

Major Social Networks

Facebook – The most popular social network. Wide adoption from every demographic.
Twitter – Social network known for breaking news and commentary.
YouTube – The popular video sharing site can be classified as a social network.
Instagram – Fast-growing social network that started with photos and now includes videos.
Pinterest – Fast-growing image-based social network.
LinkedIn – The major B2B social network.
LinkedIn SlideShare – Popular online slideshow site purchased by LinkedIn.
Google+ – Google’s latest attempt at a social network. Periodically trying to re-invent itself.
StumbleUpon – Niche social network. Visitors are taken to sites within their interest categories.

Certifications

Hootsuite Certification in Social Media Marketing – by Hootsuite, $199, certification does not expire.

Forums & Hangouts

/r/socialmedia/ – largest social media subreddit at Reddit.
Quora: Social Media Marketing – the main social media marketing topic at this large Q&A site.

Podcasts

Social Pros Podcast – weekly, Jay Baer and Adam Brown talk to leading social media practitioners.
Social Media Examiner Podcast – weekly, success stories and interviews from social media marketing pros.
Social Media Examiner Show – daily, short tips for marketing your business using social media.
Manly Pinterest Tips – weekly, started with Pinterest, now covers many areas of social media.
Inside Social Media – archived, covered social media, content marketing and business marketing strategies.

YouTube Channels

Savvy Sexy Social – not-boring videos about a variety of social media and business topics.
Social Media Examiner – lately has featured medium-length videos about social tools.
Social Media Minute – short tips and interviews by Jan Rezab of Social Bakers.
Social Fresh – interviews and past presentations from the conference.
Social Media Week – interviews from conferences plus short tips.
Holistesque – short videos talking about common social media topics (archives).

Courses & Education

MarketingProfs University – social media marketing: the full monty.
Udemy – social media marketing courses (various).
Market Motive – social media marketing certification course.
Online Marketing Institute – social media marketing courses.
eMarketing Association – advanced social emarketing ecourse.
Constant Contact – social media 101 – social media quickstarter

Other Resources

Ideal Images Sizes for Social Media Posts – dimensions for 6 major social networks.

Conferences

Social Media Week – many events, covering every continent except Antarctica.
Social Media Strategies Summit – several events in major cities in the US.
Social Media Marketing World – one event in San Diego, CA.
Social Fresh – one event in Orlando, FL.
#SocialPro (by Marketing Land) – one event in Seattle, WA.
Social Tools Summit – one event in Boston, MA.
Incite Corporate Social Media Summit – one event in New York, NY.
Social Media & Web Analytics Innovation – one event in San Francisco, CA.
Social Media Camp – Canadian event in Victoria, BC.
European Social Media Conference – held in different cities each year.
3xe Digital – one event in Dublin, Ireland.
SocialMedia.org Brand-Only Events – various members-only meetings.

more detail: Digital Marketing Conference Calendar