Project proposals

From time to time I have some ideas for projects, which I don't have time to implement just myself. If you'd like to work/participate on one of the projects, or if you know that some of the ideas is already implemented, please let me know.

My main requirements for an implementation of these projects are
[list]
[*] To be [w:open source], and
[*] to be multi-platform, i.e. Linux, Windows, MacOS, etc.
[/list]
Languages I prefer (in the order of preference):
[list=1]
[*] [w:Haskell (programming language)|Haskell]
[*] [w:Scala (programming language)|Scala]
[*] [w:Java (programming language)|Java]
[*] maybe also [w:Objective Caml|OCaml]
[/list]