* [uniqush-push 2.9.1](https://github.com/uniqush/uniqush-push) – Go-based unified push notification server that abstracts APNs, FCM, ADM, and UnifiedPush/Web Push delivery via a single API.

* [AirSIM v0.9.5](https://github.com/kai-wu-cortex/AirSIM) – Cross-device calling and messaging project that connects Samsung Android, iPhone, Apple Watch, Android AVF Linux, CallKit, PushKit, VoWLAN, APNs, and Cloudflare Workers.