In many cases, it is not easy to find the best application for certain task just. Often, you end up installing and uninstalling several candidates before finally deciding on the application to use on a regular basis, probably for an extended period of time.
CLI-Apps.org is a portal for finding command line applications for Linux. The applications are tagged by type of application and rated by users that makes it a lot easier to find interesting command line applications.
Unfortunately, the site misses many interesting CLI apps. In the group Editors, for example, only Emacs, VIM and Nano are mentioned. Many editors, like Joe, Jed and Qedit, are left out. Many more applications can be found in Free Software Foundation's (FSF) Free Software Directory.