1) Activity data
Twitter Counter Twitter statistics per user.
Tweetstats Aggregates twitter statistics per user, including tweet frequency and times.
Tweetake Download twitter messages, followers and interactions as .CSV.
Request data from Twitter Step by step guide to request your data from Twitter.
What Twitter knows about me by Anne Helmond
Who unfollowed me Shows all user who unfollowed or do not follow back
Tweetarchivist Archive & analyse tweets.
Twitonomy Twitter monitoring, analytics and back-up.
Facebook
Facebook Status Statistics Analyse Facebook status activities and responses.
Wolfram Alpha Facebook Report Personal analitics for Facebook profiles covering individual and social activity data.
Archivedbook Allows to access, sort and search Facebook status updates
Likejournal Use Facebook like as bookmarking tool, follow the likes of other Facebook users.
Likebutton Organising web based on (personal) Facebook like activities.
Facebook activities via API Retrieved likes, shares and commentes for single URLs.
Like Scraper Batch queries Facebook likes for URLs.
Twenty Feet Social media platform activity and interactivit statistics.
Thinkupapp Open source application that allows to capture, store & analyse all social media activities.
SEO Site Tools SEO Chrome extension featuring social media activities for URLs.
2) Rankings, relations & reputation
Klout Social media influence ranking.
Kred Social media influence ranking.
Crowdbooster Social media influence ranking and follower statistics.
Twitalyzer Twitter influence analytics.
3) Network/conversation visualisation
TouchGraph Facebook network visualisation with clusers based on photos or profile data.
Vasande Visualiser Network visualisation with possibility to filter based on profile data.
Netvizz Download Facebook network connections, groups and like data as .gdf or .gephi files.
Blog entry on Facebook Like networks.
SocialCollider Visualises cross connections between conversations on Twitter.
Mentionmap Maps twitter networks based on mentions.
Trendsmaps Maps Twitter trends on geographical map.
4) Search & Content
Facebook API browser Searches information visible publicly via the Facebook API.
Topsy Social media search engine.
FB Search Searches public Facebook content.
What the hashtag? Hashtag search & definition.
TagDef Hashtag definition & related hashtags.
5) Trackers & Cloud connections
TrackerTracker Identifies the presence of tracking devices, including social media plugins on websites.
CDN Finder Identifies fingerprints of content delivery networks on websites.