# FAQ
URL: https://usememos.com/docs/faq

## Is Memos open source? [#is-memos-open-source]

Yes. Memos is released under the MIT License.

## Where is my data stored? [#where-is-my-data-stored]

Data is stored in your own database. Attachments can live in the database, on the local filesystem, or in S3-compatible storage.

## Does Memos have an API? [#does-memos-have-an-api]

Yes. Memos provides REST and gRPC APIs. See the [API reference](/docs/api).

## Is there a demo? [#is-there-a-demo]

Yes. You can try the live demo at [https://demo.usememos.com](https://demo.usememos.com).

## What is the easiest way to run it? [#what-is-the-easiest-way-to-run-it]

For most users, Docker with a mounted data directory is the fastest and simplest starting point.

## Should I use SQLite or MySQL/PostgreSQL? [#should-i-use-sqlite-or-mysqlpostgresql]

SQLite is a strong default for a single-instance deployment. Use MySQL or PostgreSQL when you want an external managed database or more operational flexibility.

## Can I disable public memos? [#can-i-disable-public-memos]

Yes. If your instance is private, disabling public visibility is a sensible default.