Rocket.Chat stands out as the best open source alternative to Discord. If it doesn’t meet your needs, don’t worry, — we’ve put together a ranked list of other open source Discord alternatives to help you find the right fit. Other interesting open source alternatives to Discord are: Revolt and Mattermost.
Discord alternatives are mainly Communication but may also be Messaging or Communities. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Discord.
An open-source communication platform designed for secure and customizable team collaboration.

Rocket.Chat is an open-source, secure communication platform designed for organizations requiring robust collaboration tools. It offers real-time messaging, voice and video calls, and extensive customization options, making it ideal for enterprises, government agencies, and regulated industries seeking data sovereignty and compliance.
Key benefits of Rocket.Chat include:
Open-Source Flexibility: Customize and extend the platform to fit your organization's unique needs, with options for self-hosting or cloud deployment.
Secure Communication: Benefit from end-to-end encryption, granular user permissions, and compliance with standards like ISO 27001 and SOC 2, ensuring data protection and privacy.
Integrated Collaboration Tools: Utilize built-in features such as real-time chat, VoIP, video conferencing, and screen sharing to streamline team interactions.
Scalable Architecture: Support thousands of users across departments with high-performance capabilities and federated communication via the Matrix protocol.
Extensive Integrations: Seamlessly connect with tools like Salesforce, Jira, and other business applications to enhance workflow efficiency.
An open-source, user-centric chat platform designed as a privacy-focused alternative to Discord.

Revolt is an open-source, privacy-focused chat platform designed for communities, teams, and friends. Built with customization and user control in mind, Revolt offers a modern interface, fine-grained permissions, and robust moderation tools, making it ideal for those seeking a secure and flexible messaging solution.
Key benefits of Revolt include:
Open-Source & Self-Hosted: Customize and host your own instance of Revolt, ensuring full control over your data and environment.
Privacy-Focused Design: Built with user privacy at its core, Revolt collects minimal personal data and operates without ads or trackers.
Advanced Moderation Tools: Utilize fine-grained permission controls and comprehensive moderation tools to manage your community effectively.
Cross-Platform Accessibility: Access Revolt through web, desktop, and mobile applications, ensuring seamless communication across devices.
Community-Driven Development: Engage with an active community of developers and users, contributing to the continuous improvement of the platform.
A secure collaboration platform designed for mission-critical operations. It offers customizable tools for team communication, task management, and workflow automation

Mattermost is an open-source collaboration platform designed for secure, mission-critical work. It’s ideal for industries like defense, government, and critical infrastructure that need high security, privacy, and real-time communication. Mattermost ensures seamless collaboration with control over data and compliance.
Key benefits of Mattermost include:
A powerful photo editing and illustration tool that enables users to transform images, remove unwanted elements with a click, and create photorealistic results using generative fill tools.
A web analytics service offered by Google that tracks and reports website traffic, providing insights into user behavior.
An all-in-one workspace for notes, tasks, databases, project management, knowledge sharing, and team collaboration, blending flexibility with organization to streamline your workflow.
Google’s mobile and web app development platform that helps developers build apps and games that users will love.
A customer service platform that combines live chat, messaging, and AI-powered support tools. It helps businesses manage customer interactions, automate responses, and improve support efficiency across channels.
A centralized collaboration platform that connects the right people, resources, and tools to streamline teamwork and achieve goals effectively within organizations or teams.