The Mer Wiki now uses your Mer user account and password (create account on https://bugs.merproject.org/)
Adaptations/libhybris/Install SailfishOS for z3c
Sony Xperia Z3 Compact
SailfishOS port to the z3c is still a work in progess, it it based on CM-12.1, and boots to UI. Wifi works, and so does the modem.
There are currently no prebuilt zips available for flashing. You can however roll a build yourself, using the repositories and manifests at https://github.com/xperiasailors/.
Feel free to ping maikoool on irc if your want write access on any of the repositories there. You can of course also do a pull request on Github.
maikoool was the latest one working on this port, in April 2016.
Some info for flashing
If you build a sailfish image, this will not include recovery. CM-12.1 stock recovery cannot be used because of some checksum error.
Since the Z3c does not have a bootloader recovery option, you will need to flash TWRP recovery or similar other recovery using fastboot. You can get one at http://nut.xperia-files.com/ by uploading your stock CM boot.img there.
If you want to return to Android, use fastboot to flash your original boot.img. No changes to Android should have been made by flashing SailfishOS.
If you want to reclaim the diskspace used by sailfish, remove the /data/.stowaways/sailfishos/ folder.