- Free Software Friendly companies (or at least not unfriendly):
- Kodak (even though now they have withdrawed the doc from the website).
- Various using the docummented "stv0680" chipset.
- Minolta (provided some documentation for old cameras)
- Sony, Nikon, Minolta, Olympus, Konica, FujiFilm (PTP or USB Mass Storage Devices).
- Canon (NDA, SDK win only) (they redirect to gphoto)