Below is an outline of the conversion optimization services and tools in the digital marketing tools index.

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

A/B & Multivariate Testing

Visual Website Optimizer – $ – testing and experimentation, visual landing page editor, heatmaps, targeting and personalization, research & user feedback, more.
Unbounce – $ – landing page creation tool with A/B testing.
Optimizely – $ – testing, personalization, targeting, analytics.
Google Content Experiments – Google’s testing tools within Analytics.
Monetate – ??? – Optimization, personalization, merchandising, mobile apps, email.
SiteSpect – ??? – A/B & multivariate testing, personalization and targeting, mobile optimization, site speed.
Adobe Target (formerly Test & Target) – ??? – now part of Adobe Marketing Cloud. Contact for pricing.
Maxymiser (by Oracle) – ??? – now part of Oracle Marketing Cloud. Contact for pricing.

Landing Page Generators

Lander – $ – landing page generator with many templates and integrations.
PageWiz – $ – landing page generator with many templates and integrations.
Instapage – $ – landing page generator with many templates and integrations.
LeadPages – $ – landing page generator with a large 3rd-party template market.
KickoffLabs – $ – landing page generator with many templates, plus opt-in forms, exit widgets, email marketing integration, viral referral generation, more.
Unbounce – $ – landing page generator with a large 3rd-party template market and many integrations.
ClickFunnels – $$ – create lead funnels.
Launchrock – site builder dedicated to early customer acquisition.
OptimizePress – $$ – WordPress theme for creating landing pages, sales pages and membership portals.
Launch Effect – $ – one-page WordPress theme for viral launches.

Landing Page Galleries

iSpionage gallery – landing page design gallery, with filters for category and device.
lapa.ninja– landing page inspiration collection.

Heatmap Analytics

Crazy Egg – $ – heatmaps… regular, confetti, scrollmap, overlay.
Lucky Orange – $ – all-in-one conversion optimization suite. Heatmaps, session recordings, chat, conversion funnels, form analytics, polls.
Mouseflow – $ – heatmaps (click & move, scroll & attention), session replay.
Hotjar – $ – suite of analytics features: heatmaps, recordings, forms, polls, surveys, more.
Inspectlet – $ – heatmaps, session recording, form analytics.
Ptengine – $ – heatmaps and other advanced analytics.
FullStory – $$ – like “a DVR for your website.”
SessionCam – $$$ – session replay, heatmaps,
ClickTale – heatmap analytics, session replays, conversion funnels (pricing not available on website).

Miscellaneous

OptinMonster – create and A/B test lead capture forms without a developer.
WhichTestWon – has a free quiz “test of the week” feature, also a paid archive.

Forums & Hangouts

Quora: Conversion Optimization – the main conversion optimization topic at this large Q&A site.

Podcasts

Unbounce Podcast – weekly tips, interviews and success stories.
Landing Page Optimization – every 2 weeks, hosted by Time Ash.
Conversion Sciences – sporadic, often with supporting post & images.
ConversionCast by LeadPages – weekly, interviews.
Crazy Egg Podcast – archived, topics are still relevant.
The Conversions Podcast – archived, topics are still relevant.
PPC Hero Landing Page Optimization – one landing page per episode.

Blogs

ConversionXL
Conversioner
Crazy Egg
Kissmetrics
Invesp
Convert.com
WhichTestWon
Unbounce
Optimizely
WiderFunnel
SiteTuners
VWO
Conversion-Rate-Experts
ConversionAid
Conversion Sciences
ConversionIQ
Conversion Voodoo
Bryan Eisenberg

YouTube

ConversionXL – averaging ~10 minutes, has a mix of basic explanations, how-to, site reviews and interviews.
Unbounce – 30 minute “AMA” style videos. Archives include “Page Fights”…  brave contestants’ landing pages are torn apart live online.
Invesp Pii – typically longer (3o to 60 minute) in-depth videos.
ConversionIQ – website critiques from a conversion perspective.
WiderFunnel – typically ~1 hour webinars and presentations.
Site Tuners – typically ~1 hour webinars and presentations.

Certifications

Optimizely Platform Certification – by Optimizely, $100, maintenance: must pass short online exams after major Optimizely releases.

Courses & Education

Udemy – conversion optimization courses (various).
MarketMotive – conversion (CRO) certification course.

Conferences

ConversionXL Live – one event in a resort just outside Austin, TX.
Conversion Conference – one event in the US, two events in Europe.
Call To Action Conference – one event in Vancouver, Canada.
BEHAVE – enterprise event in Austin, TX.
B2B Content2Conversion – one event in Scottsdale, AZ.
Traffic and Conversion Conference – one event in San Diego, CA.

more detail: Digital Marketing Conference Calendar