Best Mattermost alternatives (2026)

Comparing tools before you commit? Here are 17 open source startups on Launchory that founders shortlist against Mattermost, ranked live by community upvotes rather than a fixed editorial list. Want the full picture on Mattermost itself — pricing model, socials, launch date? See Mattermost's profile.

Quick comparison

1InstaFetch — Fast Instagram Video, Reels & Photo Downloader (1 upvote)
2Grafana — Open-source dashboards for metrics, logs, and traces (1 upvote)
3Nextcloud — Self-hosted file sync and collaboration suite

Featured

InstaFetch

Fast Instagram Video, Reels & Photo Downloader

Open SourceFree

Grafana

Open-source dashboards for metrics, logs, and traces

Open SourceFreemium

Nextcloud

Self-hosted file sync and collaboration suite

Open SourceFreemium

WordPress

Open-source software powering much of the web

Open SourceFree

Meilisearch

Open-source search engine that is fast to embed

Open SourceFreemium

Rocket.Chat

Open-source communications platform you can self-host

Open SourceFreemium

Airbyte

Open-source data integration with 600+ connectors

Open SourceFreemium

Payload

Open-source headless CMS built for Next.js

Open SourceFreemium

Strapi

The leading open-source headless CMS

Open SourceFreemium

Ghost

Open-source publishing platform with built-in memberships

Open SourceFreemium

Medusa

Open-source commerce engine for developers

Open SourceFreemium

Directus

Open-source headless CMS for any SQL database

Open SourceFreemium

Appwrite

Open-source backend platform for web and mobile apps

Open SourceFreemium

NocoDB

Open-source Airtable alternative on your own database

Open SourceFreemium

Documenso

The open-source DocuSign alternative

Open SourceFreemium

Cal.com

Open-source scheduling infrastructure

Open SourceFreemium

n8n

Workflow automation you can self-host

Open SourceFreemium

Compare Mattermost and similar tools

Grafana vs Nextcloud Grafana vs WordPress Grafana vs Meilisearch Grafana vs Payload Grafana vs Airbyte Nextcloud vs WordPress Nextcloud vs Meilisearch Nextcloud vs Payload

Popular alternatives

Grafana alternatives Nextcloud alternatives WordPress alternatives Meilisearch alternatives Payload alternatives Airbyte alternatives InstaFetch alternatives

FAQ

What's the best alternative to Mattermost?

Based on community upvotes on Launchory, InstaFetch is currently the top-ranked open source alternative to Mattermost. Grafana and Nextcloud are also strong options — see the full ranked list below.

Why look for alternatives to Mattermost?

Founders and teams look for Mattermost alternatives to compare pricing models, feature sets, or find a tool that better fits their workflow. Every option below is a live, community-upvoted open source startup — not a static roundup.

Browse the full Open Source category, or every startup on Launchory.