Forum member and Blender developer Skywriter just announced in the forum that IRIX Central is now hosting nightly Blender builds:
In response to some blender users desire to have latest blender builds, http://www.irixcentral.com will now carry nightly builds of blender (ok, when the compile isn't broken :-) for IRIX. These are complete mips3 builds same as the release version (only maybe a little buggy, or not depending on how well we're doing :-) except you get the benefit of incremental feature adds each day!Enjoy, and thanks irixcentral!
Sky


See 3d graphics forum, blender thread for new update
on available software!!