Miranda IM
Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols.
Franz is a free messaging app / former Emperor of Austria and combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat and many more.
Franz is a free messaging app / former Emperor of Austria and combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat, Facebook Messenger, Telegram, Google Hangouts, GroupMe, Skype and many more. You can download Franz for Mac, Windows & Linux.
Official Website
GitHub
Twitter
Multiple Account support Gmail integration Slack integration Multiple protocols iPhone/iPod sync Gitter integration Lightweight wrapper Unified messaging
multiple-account-support gmail-integration slack-integration facebook-messaging multi-protocol slack-client google-talk iphone-sync multi-messenger gitter-integration hipchat-client lightweight-wrapper telegram-client unified-messaging whatsapp-client
Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols.
Free Open Source Windows
Dialog Messenger is a customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools for client interface as well as for server.
Free Personal Mac OS X Windows Linux Android iPhone Web Self-Hosted
Group messaging platform owned by Microsoft. It's absolutely free, whether you're talking to a group of friends, or texting with one person. Best of all, it works on nearly every phone, via push or SMS.
Free Personal Android iPhone Web Android Wear Blackberry Windows Phone Windows Mobile
A simple & beautiful app for Facebook Messenger. Chat without distractions on any Operating System.
Free Open Source Mac OS X Windows Linux
Messenger Lite is a fast and data-efficient messaging app to reach the people in your life. Installs quickly. It's less than 10MB to install, saving storage space...
Free Android Android Tablet
VideoMeeting is a free and open source video conference solution built to have video calls and chats using your web browser. It is a pure web application based on WebRTC...
Free Open Source Chrome OS Web Self-Hosted