Alternatives to Spectrum 2
Spectrum 2 is an open-source instant messaging transport that bridges different IM networks, allowing users to communicate across platforms like XMPP, Discord, Telegram, and more. Find open source and proprietary alternatives that serve similar purposes.
License:Unknown
Stars:412
Difficulty:Advanced
Pricing:Free
Hosting:Self-Hosted
More communication projects
Discover other open source projects in the communication category:
Rocket.Chat is an open-source, fully customizable communications platform for organizations with high standards of data protection, offering team collaboration, omnichannel customer service, and a complete messaging solution.
chatteam-collaboration
Stars
43,076Relative Popularity
201License
NOASSERTION
Novu is an open-source notification infrastructure that provides a unified API for sending notifications across multiple channels including Email, SMS, Push, and Chat. It offers an embeddable notification center, workflow engine, and no-code email editor.
communicationnotifications
Stars
37,317Relative Popularity
158License
NOASSERTION
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It provides team messaging, file sharing, project management and integrations in a self-hosted environment.
communicationcollaboration
Stars
33,237Relative Popularity
150License
NOASSERTION
Zulip is a powerful open-source team chat application that combines the immediacy of real-time chat with the organization of email-style threading, designed for productive team collaboration.
chatteam-collaboration
Stars
23,182Relative Popularity
113License
Apache-2.0
Apprise allows you to send notifications to almost all of the most popular notification services available today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc. through a single unified interface.
communicationnotifications
Stars
14,075Relative Popularity
57License
BSD-2-Clause
Element is a secure and decentralized communication client for the Matrix network. It provides end-to-end encrypted messaging, voice/video calls, file sharing, and collaboration features with a focus on privacy and security.
communicationchat
Stars
11,950Relative Popularity
56License
AGPL-3.0
Tinode is an instant messaging platform with a Go backend and clients for iOS, Android, web, and command line, designed for building chat applications with modern features.
messagingchat
Stars
12,654Relative Popularity
55License
GPL-3.0
Gotify is a simple server for sending and receiving messages in real-time via WebSocket. It provides a sleek web UI, REST API, and supports plugins for extending functionality. Perfect for self-hosted push notifications.
communicationnotifications
Stars
13,086Relative Popularity
54License
NOASSERTION
Centrifugo is an open-source scalable real-time messaging server that can instantly deliver messages to application users over WebSocket, HTTP-streaming, SSE, GRPC, and WebTransport. It provides a language-agnostic PUB/SUB server for building real-time applications.
communicationwebsockets
Stars
9,163Relative Popularity
38License
Apache-2.0Showing 1-9 of 26 projects in communication