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.
Product Hunt - A website that lets users share and discover new products
Free Software Directory - The Free Software Directory is a project of the Free Software Foundation (FSF) and United Nations...
Alternative.me - Welcome to alternative.me, the source of better software alternatives. Finding suitable software was never easier.
JSter - JSter is a community-driven catalog of the most useful javascript libraries.
SaaSHub - Find and promote software that will help you grow your business or to be more productive.