From Quake Wiki

Trenchbroom is a recent level editor for Quake programmed and maintained by SleepwalkR. It uses a single 3D view and 2D views, and boasts some very handy vertex manipulation. Website

You can find the source-code here: Github



  • Full support for editing in 3D and in up to three 2D views
  • High performance renderer with support for huge maps
  • Unlimited Undo and Redo
  • Macro-like command repetition
  • Issue browser with automatic quick fixes
  • Point file support
  • Automatic backups

Brush Editing

  • Robust vertex editing with edge and face splitting and manipulating multiple vertices together
  • Clipping tool with two and three points
  • CSG operations: merge, subtract, intersect
  • UV view for easy texture manipulations
  • Precise texture lock for all brush editing operations
  • Multiple texture collections

Entity Editing

  • Entity browser with drag and drop support
  • Support for FGD and DEF files for entity definitions
  • Mod support
  • Entity link visualization
  • Displays 3D models in the editor
  • Smart entity property editors


See Getting_Started_Mapping for a beginners guide to using Trenchbroom, that also covers a lot of the basics of general Quake mapping. Note that this tutorial is a bit outdated as many things have changed in Trenchbroom 2.0.