[rlpb]

The last time I checked, this wasn't open source. I don't like running foreign binaries on my system. This doesn't rule it out completely for me, but puts me off enough that I haven't tried it.

[longwave]

Redshift is an open source equivalent for Linux and Windows: http://jonls.dk/redshift/

[sturmeh]

Doesn't work on my Windows. :(

>Display device does not support gamma ramps. >Failed to start adjustment method wingdi. >Trying next method... >No more methods to try.

[gurkendoktor]

This also means that you cannot fix any of the things that annoy you. I would love to enter custom times or fix transition bugs. :( At least it works with multiple displays now (on OS X).