Rocket.Chat
Communications platform that puts data protection first (alternative to Gitter.im and Slack).
Free
Communication · Custom messaging
Communication software used to provide remote access to systems and exchange files and messages in text, audio and/or video formats between different computers or users, using their own custom protocols. · Category descriptions are the source's original text
Mattermost
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).
ntfy
Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.
SimpleX Chat
The most private and secure chat and applications platform - now with double ratchet E2E encryption.
Apprise
Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, D...
Gotify
Notification server with Android and CLI clients (alternative to PushBullet).
OpenWA
WhatsApp API gateway exposing messaging as REST endpoints, with a web dashboard, multi-account sessions, and webhook events (alternative to...
Tinode
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.
Screego
Screego is a simple tool to quickly share your screen to one or multiple people via web browser.
Fluxer
Instant messaging and VoIP platform built for friends, groups, and communities (alternative to Discord).
WorkAdventure
Virtual office / virtual conference application presented as a 16-bit RPG video game.
Synapse
Server for [Matrix](https://matrix.org/), an open standard for decentralized persistent communication.
One Time Secret
Share sensitive information securely with self-destructing links that are only viewable once.
Tuwunel
High-performance and feature-rich chat server for Matrix, and the successor to conduwuit (fork of Conduit).
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Advertising
Ad Platform
A display-ad broker with advertiser, partner and operator consoles
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Real estate
Rental Billing
Space rental, contracts and billing in one button — for small landlords
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Finance · Trading
AI Auto-Trading
Automated trading where AI reviews every strategy and every decision is on record
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