1106 Open source projects that are alternatives of or similar to Sum

A simple Java library to interface with Firebase Cloud Messaging (FCM) API. Pushraven allows you to push notifications to clients in very few lines of code.

Collect your thoughts and notes without leaving the command line.

📭 A powerful, simple, promise-based postMessage library.

Secure direct video group chat

C# Twitch Chat, Whisper, API and PubSub Library. Allows for chatting, whispering, stream event subscription and channel/account modification. Supports .NET Core 2.0

Free and open fair-code licensed all-in-one growth marketing & management software

android ListView with speech bubbles to demonstrate the implementation speech bubbles of chat and message in application.

goim server write by golang !🚀

Handle roles and permissions in your Laravel application

Rich markdown live preview app with linter

A highly-customizable web-based client for Azure Bot Services.

iotalk is a privacy-minded messaging system built on the IOTA Tangle. Messages are encrypted so only the intended recipient can read them.

A Windows console application that calls a web API using its app identity (instead of a user's identity) to get access tokens in an unattended job or process.

Open source RabbitMQ: core server and tier 1 (built-in) plugins

Wise and powerful personal assistant, available in your nearest terminal

A plug and play modular toolkit for integrating the Chat feature on top of Firebase!

Framework for building Event-Driven Microservices

JanusVR Presence Server

desktopJS provides a common API across multiple HTML5 containers. By programming to a common API, applications can target multiple HTML5 containers without change.

💬 Chat application built with NodeJS and Material Design

使用Perl语言（不会没关系）编写的个人账号微信/weixin/wechat客户端框架（非GUI），可通过插件提供基于HTTP协议的api接口供其他语言或系统调用

A distributed, tag-based pub-sub service for modern web applications and container-driven cloud.

Vonage Server SDK for Python. API support for SMS, Voice, Text-to-Speech, Numbers, Verify (2FA) and more.

Desktop client for Cabal, the p2p/decentralized/local-first chat platform.

chatterbot written in es6 (es2015), fork from hubot

A "native-like" OS X, Windows, & Linux desktop app for Google Allo

The most popular service bus for .NET

🔥 A highly advance featured chat app in android using Firestore

Streaming room in Node.js, rtmp, hsl, html5 videojs player

An open drawing project

一个简单的多人聊天室。基于vue和node+Socket.IO

Iris is a highly configurable and flexible service for paging and messaging.

Important security headers for koa

A simple screen recorder for Linux desktop. Supports Wayland & Xorg

Syntaxmeets. Create rooms 🏠 Call your friends 👬🏼 Sip Chai, ☕ Chat, Create, and Code👨‍💻. A coding platform to code simultaneously 🚀 with your friends and design your algorithms on SyntaxPad.💫✨

🤖 字幕组机翻小助手 - 【功能1：翻译字幕文件】 .srt .ass .vtt 【功能2：语音转文字】（拖入视频或音频识别出字幕） (最新版 v4.1.0 更新时间2021年2月23号) 可配置12家翻译服务商，如谷歌,百度,腾讯,彩云,IBM,Azure,Amazon等（可配置6家语音服务商：阿里云，讯飞，腾讯云，IBM，Azure，Amazon ）优点：1. 可以用多家服务商，2. 自己配 API Key 用自己账户的免费额度，比如腾讯每月有500万字符的免费翻译额度，IBM 500分钟的语音转文字免费额度(tern.best 那个域名过期了我不想续费了）

Command line matrix client

Intercom-style live chat window written in react

A complete overhaul of the Golang wrapper for libsodium

EasyChat是一个开源的社交类的App。主要包含消息、好友、群组等相关的IM核心功能。部分界面参照了QQ、微信等相关社交APP。EasyChat APP整体采用MVVM模式，基于JetPack(Lifecycle，LiveData，ViewModel，Room)构建

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

Android USB Control app

Scalable real-time messaging server in a language-agnostic way. Set up once and forever.

TKKeyboardControl adds keyboard awareness and scrolling dismissal (like iMessages app) to any view with only 1 line of code for Swift.

✉️ Unofficial desktop client for ProtonMail

Demo Application for https://github.com/musonza/chat/

Open source mtproto server written in golang with compatible telegram client

RPC & event framework for Python 3

MQTT Chat Using Mosca

Email-based instant messaging for Desktop.

Podcast app made with Electron, lots of ❤️ and ☕️

⚛⚗ A desktop App which displays the periodic table

An iOS chat app written following a VIPER architecture and BDD

OpenVidu Platform main repository

🐧 一款使用 Java 语言编写的仿 QQ 聊天工具

Crossbar.io - WAMP application router

Fully Functioning Messenger (Like Whatsapp) in Flutter

Real time chat app written in Swift 5 using Firebase

✉️ A GO SDK for Facebook's messenger-platform: https://developers.facebook.com/docs/messenger-platform

Easy to use Vue chat.