Open Source Alternative to Microsoft Project?

Question

What is a good open-source alternative to Microsoft Project? Mac OS-X or Linux binaries available would be a huge plus.

Answer 1

I recommend OpenProj. It's written in Java, so it runs on Linux and Mac OS X as well.
There are .deb and .dmg files available.

Answer 2

You could try some of the open-source projects from this list.

Answer 3

I like GanntProject because it is easy to use and makes nice charts. It also runs on multiple platforms.

Answer 4

For those of you not concerned by the portability of the MS-Project alternative, give openworkbench a try (for windows).

Answer 5

http://live.gnome.org/Planner/Screenshots (Linux only)

Cannot say if it is good it is, since I never used it. My room mate used it once or twice and likes it.