搜索与筛选
Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates.
Free, professional grade software package that allows you to set up your own online community within minutes.
Complete mailserver solution leveraging the Nix Ecosystem.
Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps.
The most private and secure chat and applications platform - now with double ratchet E2E encryption.
Simple, modern, lightweight & fast web-based email client (fork of RainLoop).
All-in-one Dockerized easy XMPP solution, including web admin and clients.
Federated and decentralized profile builder and social network engine.
Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks.
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.
Server for [Matrix](https://matrix.org/), an open standard for decentralized persistent communication.
Next generation noIM application in your own workspace, not only another Slack/Discord/rocket.chat.
Create a community, where your users can suggest ideas and get questions answered. And have friendly open-ended discussions and chat (Slack/StackOverflow/Discourse/Reddit/Disqus hybrid).
All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your website. With omni-channel live agents and AI-powered chatbots (alternative to Intercom, Zendesk, Tawk.to and Tidio).
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.
Modular, advanced and highly configurable IRC server written in C for Linux, BSD, Windows, and macOS.