In alphabetical order:
- Ben Boeckel
- Christian Geier
- Clément Mondon
- Hugo Osvaldo Barrera
- Julian Mehne
- Malte Kiefer
- Marek Marczykowski-Górecki
- Markus Unterwaditzer
- Michael Adler
- Thomas Weißschuh
Special thanks goes to:
- FastMail sponsors a paid account for testing their servers.
- Packagecloud provide repositories for vdirsyncer's Debian packages.