Some of you may know of HeroForge. For those that don't, it's an amazingly useful Excel-based character builder for D&D 3.5. It keeps track of nearly everything you could possibly want it to when building a character, it calculates for you all that can be automatically calculated. It can track temporary changes to stats caused by buffs, it can tell you whether you qualify for feats and prestige classes - it's all around probably the most useful character building tool I've ever come across.
Sadly, development on it seems to have died, and no new content has been added for a long time. I decided that wasn't good enough.
As I couldn't get in contact with the original developers to get added to the team, I've split off my own copy, and am now announcing that HeroForge is alive again, as HeroForge Anew! You can download it
here, and I hope you find it as useful as I have!
HeroForge Anew - now with Incarnum support!