The RSS feed for websites missing it
A cross-platform G-Code sender for GRBL, Smoothieware, etc.
The classic email sending library for PHP
Telegram Bot API for Java
PHP version of Google's phone number handling library
MQTT gateway for ESP8266, ESP32, Sonoff RF Bridge or Arduino
Amazon SNS message validation for PHP
Java wrapper for the popular chat & VOIP service
A domain based multi-tenant PBX & voice switch for FreeSWITCH
The very last word in instant messaging
Lightweight Open Source webmail written in PHP and JavaScript
Efficient UDP unicast, UDP multicast, and IPC message transport
A file downloader library for Android with pause and resume support
Easily upload files in the background with progress notification
A free, self-hostable news aggregator
Library for parsing and validating international phone numbers
Catches mail and serves it through a dream
Telegram messenger for Android
PHP secure communications library
Laravel's #1 one-to-one chatting system package
Database connection pool written in Java
High performance inter-thread messaging library
Open Source Email App for Android
Telegram Notifications Channel for Laravel
Instant messaging platform