Linux is growing fast and a lot of people are switching from Windows and OS X. There are tons of very useful software available for Linux but sometimes it is not real easy to find.
LinuxAppFinder not only lets you find Linux apps for any certain task, but also lists Linux alternatives for any Windows or OS X application. You can search for a software or browse the listings in alphabetical order. For almost every Windows or OS X software, there are 3-4 Linux alternatives listed. Just click on the one you like to see more details and instructions on how to install.
If you don’t find the software you are looking for, you can make a request through the forums. A regularly updated news sections is also there to keep you informed of new and upcoming Linux apps.