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Hammer++ Hammer++ is a community-made modification of Hammer Valve Hammer Editor for Source Source that provides an updated, feature-rich version of the editor. The trailer and website can be found here.

Hammer++ currently supports the following branches of Source engine:

Other games/mods tested

Warning.png Warning: Portal 2: Community EditionHammer++ works fine, but is not supported and the developers Will Not be able to help you if you have an issue. Proceed with caution
Warning.png Warning: Lighting preview will not work with the Black Mesa engine's (dubbed "Xengine") new dynamic lighting system as it is not supported by the stock SDK code, which is what Hammer++ for Source 2013 Singleplayer is designed for.
Placementtip.gif Workaround: Use the old lighting entities (light, light_environment, light_spot), which are still supported and work the same in the Xengine, then change all the lights to the new lighting entities when exporting to the final version.


  • Accurate lighting preview
  • Upgraded graphic fidelity
  • Significantly better stability
  • Particle rendering
  • 2D + 3D skybox preview
  • New model browser, particle browser, color editor and keybind editor
  • Realtime display of fog and ropes
  • Variety of new tools such as physics simulation, gizmo manipulation, drawing of polygon shapes and convex brush merging
  • New func_instance tools
  • Quality of life improvements
  • ... and much more!

A more detailed feature list can be found on the website and you can support ficool2 via Ko-fi

Third Party Source SDK tools
Mod toolsDuctTape • XBLAH's Modding Tool XBLAH's Modding Tool
Map editorsHammer++ Hammer++ • QuArK QuArK • Radiant Radiant • Sledge Sledge
Map compilersBatch Compile Tool Batch Compile Tool • Batch Compiler Batch Compiler • Compile Pal Compile Pal • CSTBSP • CSTRAD • CSTVIS • Hazard Team Compile Tool Hazard Team Compile Tool • VBSP_h4xed • Zoner's Half-Life Tools → Vluzacn's Half-Life Tools
Map convertersBSP2MAP → WinBSPC • BSPSource BSPSource • MapFool • VMEX
Map toolsAutoBSPpackingTool • BSP Viewer → Crafty • EntEd • Entspy • Map Analyst • Material Enumerator • Map Obfuscator • Pakrat • Source Compile Analyzer • TAR • Vgroup • VIDE VIDE • WinBSPZip
Model compilersGUIStudioMDL • Source Model Compiler
Model convertersCrowbar Crowbar • FireSoft Half‑Life MDL • FireSoft MS3D to SMD • MDLDecompiler • Propper • Studiocompiler • VMF to SMD
Model tools3Dcoat • 3DS Max • Blender Blender • Cinema 4D • fragMOTION • GMax • HLMV++ • kHED • Lightwave • Maya • MilkShape 3D • Modo • SourceOps • VSIF2VCD • Wings3D • XSI Mod Tool • Zbrush
Displacement toolsDispGen • Twister • Worldmachine
Particle convertersSparc
Texture converters360g • FixVTF • TGAtoDUDV • VTF Creator • VTFVer
Texture toolsGIMP • HL2Tex • Sign Maker • Sky Writer • Source model skin editor • Terragen • VMT Editor • VTF Explorer • VTF Shell Extensions • VTFCmd • VTFEdit VTFEdit • VTFTool
Sound toolsL4D2 Sound Mod Creator
VPK toolsGCFScape GCFScape • Gibbed's VPK Extractor • Valve Resource Viewer
LibrariesAVIKit • HLLib • VectorLib • VTFLib
Plugins3DSMax tools • 3DSMax VTF • Blender Source Tools Blender Source Tools • Blender VertexLitGeneric • MESA • Notepad++ VDF languages • Photoshop VTF • SourceIO • SourceMod • Wall Worm Model Tools
OtherBEE2 • CtxConverter • Custom Compiler GUI • sis_ico.png Source Icon Set • SSDK Windows Gadget • SteamCMDui • TeamSpen's Hammer Addons TeamSpen's Hammer Addons • VGUI Localization • VirtualDub