MoreGamesLike.com - Most popular recommendation engine for more similar games and recommendation blog.
WebTechResources - Find best tech resources everyday, sorted by people like you, ready to select and use.
Open Source Game Clones - This site tries to gather open-source reimplementations of great old games in one place.
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
Alternatives By TechnoFizi - Find all major games, apps, sites, software alternatives
JSter - JSter is a community-driven catalog of the most useful javascript libraries.