title: List of Cross-Platform Programming Languages with Open Source Licenses
body: <p>I think it would be valuable to have a list of all the programming languages that have a significant open source component (i.e. I can do a significant amount of work in it without using any non-free components) and that are cross platform (i.e. that will run on all the major platforms: Windows, Mac OS X, and Linux/BSD), along with information about how they are useful. That way, one could pick out the ideal language for a particular project if a choice is available.</p>
  
  <p>Therefore, it would be great if you could list all the languages you know, include at least a bit about the merit/usefulness of each, and maybe some interesting points (like a good IDE, important software libraries, etc).</p>
  
  <p>Links are good too (link to the developer's site or to a major resource site).</p>
  
  <p>This would be a good complement to the list of programming books (<a href="https://stackoverflow.com/q/194812/289380">https://stackoverflow.com/q/194812/289380</a>).</p>
  
  <p>EDIT: Oh, and no flame wars :).</p>
  
  <p>EDIT 2: I have set up a Wiki to hold this list and a list of the programming books linked to above: <a href="http://programref.wikia.com/" rel="nofollow noreferrer">http://programref.wikia.com/</a></p>