Open-source alternatives guide · Updated 2026

Best open-source alternatives to Discord

Compare the best free and open-source alternatives to Discord — 12 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.

Official product reference Discord

12verified alternatives
4self-hosted signals
4categories

Only explicit alternative relationships are shown—never inferred competitor claims.

Overview

This guide compares 12 verified open-source alternatives to Discord, including Rocket.Chat, Mattermost, Element, and Fluxer.

Projects appear across Infrastructure, Data & Analytics, and Security & Privacy. 4 options include a self-hosting signal — see the self-hosted catalog. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.

Strongest repository-activity signal: Rocket.Chat · Jump to ranking · 45.8K stars

About Discord

Proprietary community chat and voice platform.

Visit Discord

Ranked open-source alternatives to Discord

Compare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.

Rocket.Chat

Open-source alternative to Discord

BrazilInfrastructureLicense not declared

The Secure CommsOS™ for mission-critical operations

The Secure CommsOS™ for mission-critical operations Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Infrastructure teams
Deployment: Inspectable source
License: License not declared
Activity: Updated 26 hours ago

Key capabilities

hacktoberfest

javascript

collaboration chat

Mattermost

Open-source alternative to Discord

United StatesInfrastructureLicense not declared

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.. Review the official repository, license, release activity, and dep

Best for: Infrastructure teams
Deployment: Inspectable source
License: License not declared
Activity: Updated 26 hours ago

Key capabilities

Element

Open-source alternative to Discord

United KingdomInfrastructureAGPL-3.0

A glossy Matrix collaboration client for the web.

A glossy Matrix collaboration client for the web. Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Infrastructure teams
Deployment: Inspectable source
License: AGPL-3.0
Activity: Updated 26 hours ago

Key capabilities

Fluxer

Open-source alternative to Discord

SwedenInfrastructureAGPL-3.0

A free and open source instant messaging and VoIP chat app built for friends, groups, and communities.

A free and open source instant messaging and VoIP chat app built for friends, groups, and communities. Review the official repository, license, release activity, and deployment doc

Best for: Infrastructure teams
Deployment: Inspectable source
License: AGPL-3.0
Activity: Updated 3 days ago

Key capabilities

fluxer fluxerapp

TypeScript

Github Actions

Cinny

Open-source alternative to Discord

InfrastructureAGPL-3.0

Yet another matrix client

Yet another matrix client Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Infrastructure teams
Deployment: Inspectable source
License: AGPL-3.0
Activity: Updated 4 days ago

Key capabilities

hacktoberfest

reactjs client

matrix

Stoat

Open-source alternative to Discord

United KingdomData & AnalyticsLicense not declaredSelf-hosted

The software powering Stoat

The software powering Stoat Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Data teams
Deployment: Self-hostable
License: License not declared
Activity: Updated 38 hours ago

Key capabilities

rust

api

redis

mongodb

Quiet

Open-source alternative to Discord

Security & PrivacyGPL-3.0Self-hosted

A private, p2p alternative to Slack and Discord built on Tor & IPFS

A private, p2p alternative to Slack and Discord built on Tor & IPFS Review the official repository, license, release activity, and deployment documentation before production adopti

Best for: Security teams
Deployment: Self-hostable
License: GPL-3.0
Activity: Updated 27 hours ago

Key capabilities

privacy

collaboration local-first chat

Wire

Open-source alternative to Discord

Content & CollaborationGPL-3.0

:wavy_dash: Overview of the open source code for Wire

:wavy_dash: Overview of the open source code for Wire Review the official repository, license, release activity, and deployment documentation before production adoption.

Best for: Knowledge teams
Deployment: Inspectable source
License: GPL-3.0
Activity: Updated 6 months ago

Key capabilities

Source code and GPL-3.0 license are visible before adoption Repository activity is available as a current maintenance signal

Mezon

Open-source alternative to Discord

Content & CollaborationLicense not declared

Mezon is a new way to communicate with your team. It's faster, better organized, better for WFH.

Mezon is a new way to communicate with your team. It's faster, better organized, better for WFH. Review the official repository, license, release activity, and deployment documenta

Best for: Knowledge teams
Deployment: Inspectable source
License: License not declared
Activity: Updated 29 hours ago

Key capabilities

chat chat-application communication bot-framework

#10

Chatto

Open-source alternative to Discord

InfrastructureAGPL-3.0Self-hosted

Privacy-first self-hosted team chat with channels, SSO options, and voice/video via LiveKit in a compact Go binary.

Chatto is a 2026 open-source Slack/Discord-style chat you can self-host as a single binary (or Docker Compose with NATS and LiveKit). Pilot moderation, mobile notifications, and vo

Best for: Infrastructure teams
Deployment: Self-hostable
License: AGPL-3.0
Activity: Updated Jul 9, 2026

Key capabilities

Single-binary deploy Channels and roles SSO providers Voice/video via LiveKit

#11

Valour

Open-source alternative to Discord

Content & CollaborationAGPL-3.0

Valour is bringing communities into the future with unique features, blazing performance, and respect for users.

Valour is bringing communities into the future with unique features, blazing performance, and respect for users. Review the official repository, license, release activity, and depl

Best for: Knowledge teams
Deployment: Inspectable source
License: AGPL-3.0
Activity: Updated Jul 14, 2026

Key capabilities

chat video

csharp streaming

#12

SAMA

Open-source alternative to Discord

Data & AnalyticsGPL-3.0Self-hosted

SAMA - Simple but Advanced Messaging Alternative chat server, powered by uWebsockets.js

SAMA - Simple but Advanced Messaging Alternative chat server, powered by uWebsockets.js Review the official repository, license, release activity, and deployment documentation befo

Best for: Data teams
Deployment: Self-hostable
License: GPL-3.0
Activity: Updated Jul 10, 2026

Key capabilities

nodejs chat

websocket chat-application

How to choose a Discord alternative

Map must-have capabilitiesList the workflows in Discord you cannot drop during migration.

Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.

Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.

Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.

Frequently asked questions about Discord alternatives

What are the best open-source alternatives to Discord?

OpenSourceChoice currently lists 12 projects with an explicit alternative relationship to Discord. Catalog highlights include Rocket.Chat, Mattermost, and Element. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.

Are open-source alternatives to Discord free?

Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.

Can I self-host an alternative to Discord?

4 options in this list carry a self-hosting signal. Confirm the official install guide, backups, upgrades, and hardening steps before production.

How should I evaluate Discord alternatives?

Map must-have Discord workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.