Partial list of GrapheneOS features beyond what AOSP 12.1 provides:
+These are the features of GrapheneOS beyond what's provided by version 12.1 + of the Android Open Source Project. It only covers our improvements to AOSP and + not baseline features. This section doesn't list features like the standard app + sandbox, verified boot, exploit mitigations (ASLR, SSP, Shadow Call Stack, + Control Flow Integrity, etc.), permission system (foreground-only and one-time + permission grants, scoped file access control, etc.) and so on but rather only + our improvements to modern Android. We plan on providing a separate page listing + the improvements we've contributed to Android since those features aren't listed + here despite being a substantial portion of our overall historical work.