Best Mattermost alternatives (2026)

Comparing tools before you commit? Here are 15 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)
3Airbyte — Open-source data integration with 600+ connectors

Featured

InstaFetch

Fast Instagram Video, Reels & Photo Downloader

Open SourceFree

Grafana

Open-source dashboards for metrics, logs, and traces

Open SourceFreemium

Airbyte

Open-source data integration with 600+ connectors

Open SourceFreemium

Meilisearch

Open-source search engine that is fast to embed

Open SourceFreemium

Payload

Open-source headless CMS built for Next.js

Open SourceFreemium

Rocket.Chat

Open-source communications platform you can self-host

Open SourceFreemium

Appwrite

Open-source backend platform for web and mobile apps

Open SourceFreemium

Ghost

Open-source publishing platform with built-in memberships

Open SourceFreemium

Medusa

Open-source commerce engine for developers

Open SourceFreemium

NocoDB

Open-source Airtable alternative on your own database

Open SourceFreemium

Directus

Open-source headless CMS for any SQL database

Open SourceFreemium

Strapi

The leading open-source headless CMS

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

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 Airbyte 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.