Project Indigo is described as 'A camera app that offers full manual controls, a more natural (“SLR-like”) look, and the highest image quality that computational photography can provide — in both JPEG and raw formats' and is a Camera app in the photos & graphics category. There are more than 25 alternatives to Project Indigo for a variety of platforms, including iPhone, Android, iPad, F-Droid and Android Tablet apps. The best Project Indigo alternative is Open Camera, which is both free and Open Source. Other great apps like Project Indigo are Secure Camera, Final Cut Camera, Fossify Camera and PhotonCamera.