OmniROM

OmniROM thrives on flexibility, and allows developers to work on the project together to improve its features. It supports a number of devices, and also allows users to add features and the bugs discovered to their roadmap, which is publicly accessible.

To install OmniROM, go to http://docs.omnirom.org/ Installing_Omni_on_your_device

https://omnirom.org/