An open source version that is not affiliated with f.lux:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;thomasfinch&#x2F;GammaThingy&#x2F;" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;thomasfinch&#x2F;GammaThingy&#x2F;</a>