NOTE: There is a known issue with the most recent entries having screwed-up information and links. Some databases are out of sync and we haven't been able to fix it yet.
ZenNode updates the BLOCKMAP, REJECT, and/or NODES/SEGS/SSECTOR resources of your .WAD file. It supports DOOM / DOOM II / Heretic / and Hexen. It will generally rebuild the BSP tree faster than any other program around.