Hammerspoon is based on Mjolnir by Steven Degutis, which is based on Hydra by Steven Degutis.
The extensions included in Hammerspoon were written by:
- Steven Degutis
- Aaron Magill
- Chris Jones
- Peter van Dijk
- Linell Bonnette
- Kepler Project
- Enrique García Cota
- Szymon Kaliski
- Brian Gilbert
- Tristan Hume
- Tyler Mandry
- Alexander Yakushev
- Jake Heinz
- Till Klocke
- Markus Engelbrecht
- Chris Hocking
The Hammerspon icon was provided by Juerd Waalboer.