Mycelium is an open-source, all-in-one platform for chat, voice and video calls, file sharing and collaborative documents — one place for your community or team instead of a dozen separate apps.

Yes. Mycelium is free to start, with no ads and no data collection.

Is Mycelium open source?

Yes. Mycelium is fully open-source (FOSS) software, with its code available on GitLab and GitHub.

Where is my data stored?

Mycelium is hosted in Europe and is private by default — no ads and no data collection.

CHAT. SHARE.
CREATE.

One place to talk, call, share files, collaborate and create - your community, your rules. Open source, hosted in Europe, no ads and no data collection. Ever.

Get started free

Your team shouldn't live across a dozen scattered tabs. In Mycelium you create the place that works the way you do! Store files, create collaborative docs, chat, and automate actions to have a seamless workflow. Open source and hosted in Europe, private at all costs.

Storage

A drive in the chat

Share files, images and assets right where you talk. Dedicated drive channels keep everything your team needs in one place.

Messaging

Chat that stays yours

Rich messaging with full markdown and text coloring. No ads, no data-mining, optional typing indicators. Talk freely, in absolute privacy.

Craftsmanship

Handcrafted with love.
Zero Dependencies.
Pure Sovereign FOSS Code.

Productivity

Notes, docs & spreadsheets

Write documents, keep shared notes, and build spreadsheets right beside your conversations. Everything you need to get real work done — no extra apps.

Voice & Video

Calls built in

Clear voice and video, from a quick 1:1 to a full room. Jump in with one click — no plugins, no downloads.

CHAT. SHARE.CREATE.

Why Mycelium: open source, private, and hosted in Europe

Mycelium features: chat, calls, cloud drive, notes and documents