Flat is an open-source virtual classroom client that combines real-time video conferencing, an interactive whiteboard, screen sharing, and session recording into a single cross-platform application. Built with Electron and React, it provides a desktop shell for hosting and joining live teaching sessions on Windows and macOS, with a web-based interface that integrates video, audio, whiteboard annotations, and messaging for synchronous student engagement. The platform distinguishes itself through its integration of Agora's Real-Time Communication engine with the Software-Defined Real-Time Netwo
ntfy is a self-hosted messaging infrastructure that provides a lightweight platform for sending and receiving real-time notifications. It functions as a topic-based pub-sub server, allowing users to publish and subscribe to message channels using standard HTTP requests. By bridging server-side events with native mobile and desktop clients, it enables the delivery of alerts across various environments through a unified communication layer. The project distinguishes itself by offering a complete, private notification ecosystem that includes persistent message caching and robust access control.
Typebot is a visual chatbot builder and conversational platform designed for lead generation and data collection. It provides a drag-and-drop workflow designer that converts visual nodes into structured conversation logic, allowing users to build interactive forms and chatbots with conditional routing. The platform is designed as a self-hosted conversational infrastructure, enabling the deployment of the entire application stack on private servers using Docker and PostgreSQL. This allows for complete control over data storage and server maintenance. The system integrates with external servic
jam-systems/jam 的主要功能包括：Communication Systems, Video Conferencing。
jam-systems/jam 的开源替代品包括： netless-io/flat — Flat is an open-source virtual classroom client that combines real-time video conferencing, an interactive whiteboard,… binwiederhier/ntfy — ntfy is a self-hosted messaging infrastructure that provides a lightweight platform for sending and receiving… binwiederhier/ntfy-android — Android app for ntfy.sh. canop/miaou — A chat server with OAuth2 authentication, persistent and searchable history, video and audio, markdown formatting,… caronc/apprise — Apprise is a notification library and command-line utility that provides a unified interface for sending alerts to a… baptistearno/typebot.io — Typebot is a visual chatbot builder and conversational platform designed for lead generation and data collection. It…