Tool Finder - The wikipedia for 100+ productivity tools/apps
Likewise - Get recommendations you love, from people you know.
Loopple - With Loopple, you can build your next Bootstrap Dashboard easily using drag and drop.
Alternative Hunt - Learn about great alternative products as you browse the web
Damn Good Tools - Easy-to-use, fun productivity tools—free (and open-source).
TestBox - Test drive your software options before you buy