Realtime document databases ยท Open-source engine

Realtime documents that cost nothing when idle.

Mimic Cloud hosts Mimic: collaborative, schema-checked documents with live migrations, synced over WebSockets and stored in object storage. Idle databases pay only for their bytes.

Live by default

Every document syncs to every connected client, with presence and offline edits that merge.

Scales to zero

Documents unload after ten idle minutes. An idle database costs its storage and nothing else.

Live migrations

Ship schema changes as migrations that are verified against every document before they activate.

Open source

The same engine you can run yourself. Move in or out with an archive, without rewriting your app.

From sign-up to synced in minutes

Create a database in the region closest to your users. Your backend talks to it with a database key; your app connects with document tokens your backend signs.

  1. 1

    Create a database

    Pick a project and a region. Provisioning takes seconds.

  2. 2

    Define a collection

    Push its schema with a database key from your backend or CI.

  3. 3

    Connect your app

    Mint a document token, open the WebSocket, and edit together.

Isolated per database

Database-scoped keys and signed tokens, quotas per database, and no document content in our logs.

Keys that rotate cleanly

Rotate a key with an overlap window, so deployments switch without downtime.

Infrastructure as code

Manage projects, databases and keys through the management API from CI.

Start on the free plan

Three databases with hard caps, no card required. Upgrade when you outgrow them.

Get started