Best free and open-source alternatives to Discord

Discord combines persistent text channels, voice rooms, video, screen sharing, bots, and a huge existing audience. That combination explains why replacing it is harder than replacing a normal chat app. Open-source alternatives can improve privacy and control, but they cannot automatically move your friends, community history, or favorite bots.

The most practical choices are Element on Matrix for general communities, Stoat for an interface modeled more closely on Discord, and Mumble for low-latency gaming voice. They are not identical products, so the right choice begins with what your group actually uses.

Quick comparison

1. Element and Matrix—best all-round alternative

Element is a free, open-source app built on Matrix, an open protocol for decentralized communication. The distinction matters: Element is one client, while Matrix is the network and standard. People on different compatible servers and apps can communicate, much like email users on different providers.

Element supports rooms, direct messages, threads, reactions, polls, attachments, voice messages, and voice and video calls. The personal app is free, works in a browser and on Windows, macOS, Linux, Android, and iOS, and can use a public Matrix provider. Running your own Matrix server is optional.

Pros

• mature desktop, web, and mobile clients;
• end-to-end encrypted private communication;
• voice, video, and screen sharing;
• open protocol avoids dependence on one client or provider;
• usable without self-hosting, with self-hosting available later.

Cons

• homeservers, rooms, spaces, and device verification add new concepts;
• Discord bots and integrations do not transfer automatically;
• large public communities need careful moderation and anti-spam planning;
• self-hosting a dependable server is an administrator job.

2. Stoat—closest visual idea to Discord

Stoat is the current name of the project formerly called Revolt. It is an open-source, user-first chat platform with servers, channels, messages, roles, file sharing, and voice channels. Its layout will feel more immediately familiar to a Discord user than Matrix terminology.

Stoat offers a hosted service and publishes its client and server code. Self-hosting is possible, but it is an advanced deployment involving several services. The project is actively developed, yet its community, clients, bots, moderation tooling, and operational history are smaller than Discord's or Matrix's. Treat it as a promising option to test with a small group before moving a large community.

Pros

• interface and organization are familiar to Discord users;
• open-source web, desktop, Android, and server projects;
• hosted service allows testing without operating a server;
• roles, channels, media sharing, and voice cover common group needs.

Cons

• smaller and younger ecosystem;
• feature availability can differ among clients;
• fewer established bots and community-management integrations;
• self-hosting is not a beginner shortcut.

3. Mumble—best for low-latency voice

Mumble is free, open-source voice-chat software with a long history in gaming. Its strengths are low latency, audio quality, encrypted communication, positional audio in supported games, permissions, and a lightweight server called Mumble Server or Murmur.

Mumble is not a complete social platform. Text chat is secondary, and it does not provide Discord-style video, screen sharing, forums, or a rich media feed. Mobile support also deserves checking before moving a mixed-device group: Android choices are third-party, while the official iOS client is listed as unmaintained.

Pros

• excellent voice quality and low latency;
• stable, lightweight, self-hostable server;
• detailed channel permissions;
• no license fee or premium voice tier.

Cons

• not a replacement for Discord's video and content features;
• mobile experience is less consistent;
• someone must choose or run a server.

How to move a community without losing everyone

1. List the Discord features your group uses every week: text, voice, video, bots, events, moderation, or screen sharing.
2. Create a small pilot space and invite moderators first.
3. Write a one-page joining guide with the exact app, server, and room links.
4. Run Discord and the new platform in parallel for a defined transition period.
5. Move recurring events one at a time and collect feedback from phone users.
6. Keep a read-only announcement channel on the old platform if community rules and account access permit it.

Do not promise that message history or bots will migrate perfectly. Export only content you are authorized to retain, and respect the privacy of other members.

What no alternative can replace automatically

Discord's strongest feature is its network: people already have accounts, game communities already publish invitations, and bot developers already support it. Software can reproduce channels and calls; it cannot reproduce that network overnight. For a private club, family, class, or friend group, migration is realistic. For a public community that depends on discovery and dozens of bots, operating both platforms may be the practical answer.

Pick Element for the most complete, mature open ecosystem; Stoat for a familiar experiment with a smaller group; and Mumble when voice quality matters more than everything else.