usufy.py is a GPLv3 OSINT tool that checks the existence of a profile in a bunch of different platforms (by 2014/Aug/10: 150 different platforms).
Making use of a very easy-to-replicate approach, it analyses the messages displayed by most platforms when a user profile has not been found as the evidence of the existence or not the profile searched. Its inheritance system has been designed to allow an easy development of new wrappers and new ways of exporting the results to other tools, while its multiprocessing conception is intended to provide results quickly.

By the time of this report, the tool works with the following 150 platforms:
'About', 'Adtriboo', 'Anarchy101', 'Aporrealos', 'Backyardchickens', 'Badoo', 'Behance', 'Bitbucket', 'Bitcointalk', 'Bitly', 'Blackplanet', 'Bladna', 'Blip', 'Blogspot', 'Burbuja.info', 'Buzznet', 'Cafemom', 'Carbonmade', 'Care2', 'Connectingsingles', 'Couchsurfing', 'Dailymail', 'Dailymotion', 'Deviantart', 'Disqus', 'Doodle', 'Douban', 'Dribbble', 'Ebay', 'Echatta', 'ElMundo', 'Enfemenino', 'Epinions', 'Etsy', 'Facebook', 'Fanpop', 'Favstar', 'Fark', 'Flickr', 'Flixster', 'Foodspotting', 'Forobtc', 'Forocoches', 'Forosperu', 'Foursquare', 'Freebase', 'Friendfeed', 'Garage4hackers', 'Gather', 'Genspot', 'GetSatisfaction', 'Github', 'Gitorious', 'Gogobot', 'Goodreads', 'GooglePlus', 'Gsmspain', 'Hellboundhackers', 'Hi5', 'Identica', 'Imgur', 'Instagram', 'Instructables', 'Issuu', 'Ixgames', 'Jamiiforums', 'Kaboodle', 'Kali', 'Karmacracy', 'Kickstarter', 'Kinja', 'Klout', 'Kongregate', 'Kupika', 'Lastfm', 'Linkedin', 'Livejournal', 'Looki', 'Marca', 'Matchdoctor', 'Mediavida', 'Medium', 'Meneame', 'Metacafe', 'Migente', 'Myeloma', 'Myspace', 'Naver', 'Netlog', 'Netvibes', 'Occupywallst', 'Odnoklassniki', 'Pastebin', 'Pearltrees', 'Peerbackers', 'Photobucket', 'Pinterest', 'Plancast', 'Pokerstrategy', 'Pornhub', '500px', 'QQ', 'Rankia', 'Ratemypoo', 'Rebelmouse', 'Redtube', 'Researchgate', 'Scribd', 'Sencha', 'Slashdot', 'Slideshare', 'Soundcloud', 'Sourceforge', 'Storify', 'Stumbleupon', 'Spaniards', 'Spoj', 'Squidoo', 'Stuff', 'Steamcommunity', 'Streakgaming', 'Technorati', 'Theguardian', 'Thehoodup', 'Thestudentroom', 'Tradimo', 'Tripadvisor', 'Tumblr', 'Tuporno', 'Tvtag', 'Twicsy', 'Twitch', 'Twitpic', 'Twitter', 'Ukdebate', 'Unsystem', 'Ustream', 'Vimeo', 'Vk', 'Xanga', 'Xing', 'Xtube', 'Winamp', 'Wefollow', 'Wishlistr', 'Wordpress', 'Wykop', 'Youku', 'Youtube', 'Zabbix'.

Amongst the technical characteristics:

• Processing multiple nicknames.
• Input types: terminal or file
• Individual selection of platforms by type or name.
• Multiprocessing capabilities.
• Exports to .csv and .json files.
• Storage of the profiles recovered for further processing.
• Basic GUI for managing different profiles.
• Mechanized browser class.
• Forbidden characters control.
• Benchmarking.
• Thread control.
• Logging methods.