I would like to make a real page once about these tools with more information than just listing the links.
For completeness I'll link you to the mother of all overviews of mesh generation software: Robert Schneiders' links to mesh generation software. Why create my own list if such a wonderful resource already exists? A lot of the software on Schneiders' list is old and/or not free. That is why I made my own list. NB: it is not complete. Please tell me if you think the list is lacking a vital free meshing program/project.
Reasonably recent and hopefully actively developed free meshing (related) software:
Other geometry related software:
CAD software for Linux: