Elementary Tweaks is working great on the latest version of elementary OS 5.1 Hera.
A new version of Elementary Tweaks has been released. It has a new maintainer and is now available from a new PPA. Click for installation instructions.
There is a new maintainer for Elementary Tweaks, who has released a new version which works just fine in Freya.
Elementary Tweaks doesn’t work out of the box in Freya. Follow this tutorial to make it work!