BizSugar.com › Technology › The Top 50 Open Source Alternatives to Expensive Software

This is a great list of open source software alternatives. The author lists 50 of the most commonly used proprietary software solutions and offers a free alternative.

The following fifty proprietary programs are listed in no particular order within broad categories along with their open source alternatives. In some cases you could probably write your own book on frustrations with the proprietary programs shown here. In other cases, you'll discover that the open source alternative isn't quite up to snuff yet. And, in other cases still, you'll learn that some proprietary programs are real gems, but that the open source advocate can replace those gems with equally shiny objects from the open source repertoire.