Ironwail Quake Engine
https://github.com/andrei-drexler/ironwail/releases

Copper Mod
http://lunaran.com/copper/

EricW Tools
https://ericwa.github.io/ericw-tools/

Trenchbroom
https://trenchbroom.github.io/

Q1 Compiler GUI
https://github.com/glhrmfrts/q1compile/

Blender MAP Exporter
https://github.com/c-d-a/io_export_qmap

01:05 Quake Engine – Ironwail
04:17 Mod – Copper
07:15 Trenchbroom
11:19 Trenchbroom – Instancing
14:20 EricW Tools
15:15 Feature Exploration
15:41 Q1Compile
22:27 Blender MAP Exporter