UserFinder
UserFinder - will check more than 300 social media sites. Search through sites: 2Dimensions, 3dnews, 7Cups, 9GAG, About.me, Academia.edu, Airbit, Airliners, Alik.cz, AllMyLinks, Anilist, Apple Developer, Apple Discussions, Archive.org, Arduino, ArtStation, Asciinema, Ask Fedora, AskFM, Atom Discus