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.
Winwares - Winwares is an online software listing platform where people can easily get and review lots of opensource software, Backup and Recovery Software, Project Management Tools for Windows OS, Linux Distribution and MacOS.
Product Hunt - A website that lets users share and discover new products
Filehippo - Filehippo is your key to opening files that Windows claims are "in use by another user" or simply "can't be found." Avoid the hassle.
Softpedia - A library of over 1,000,000 free and free-to-try applications for Windows, Mac, Linux and Smartphones, Games and Drivers plus tech-focused news and reviews
Softonic - Softonic is a website that offers downloads for free software and games.