1.offa / android-fossA list of Free and Open Source Software (FOSS) for Android – saving Freedom and Privacy.androidf-droidfossopen-sourceopensourceandroid-apps+3 morePythonGPL-3.012K total584 forks+51 starsfrom 11,561 · score 3.95
2.zulip / zulipZulip server and web application. Open-source team chat that helps teams stay productive and focused.zulippythonpython3chatjavascriptcollaboration+6 morePythonAPACHE-2.026K total11K forks+42 starsfrom 26,112 · score 3.76