Simple Keyboard is an actively developed, open source fork of the AOSP Keyboard for those looking for a less bloated, more responsive, basic keyboard with minimal permissions : r/Android
AOSP WiFi Keyboard - Apps on Google Play
On-screen keyboard | Android Developers
OpenBoard is a privacy-friendly keyboard for Android - gHacks Tech News
Blog - How to build a software keyboard if you're the only engineer in a startup
MOD] AOSP Themed MIUI Keyboard - Based upon MIUI Sogou Millet Keyboard [HDPI Devices][s89;] | Page 2 | Xiaomi European Community | MIUI ROM Since 2010
How do I add a number row to AOSP keyboard? : r/LineageOS