# ownCloud Marketplace > The community-driven catalog of apps and web extensions for ownCloud. It is > backend-free: every listing is a file in a Git repository, validated in the > open and served as static pages and JSON. The marketplace covers two platforms: - **ownCloud Classic (OC10)** apps, installed on the PHP server. - **ownCloud Infinite Scale (oCIS)** web extensions, loaded at runtime. ## Browse - [All apps](/apps): ownCloud Classic apps, filterable by category. - [Web Extensions](/extensions): oCIS web extensions, filterable by tag. - [Downloads](/downloads): official ownCloud server, desktop and mobile releases. ## Data / API - [Apps JSON API](/api/v1/apps.json): machine-readable feed of all Classic apps. - [Categories](/api/v1/categories.json): the supported app categories. - [oCIS extensions feed](/api/ocis/v1/apps.json): the oCIS app-store repository feed. ## Docs - [Developer documentation](https://doc.owncloud.com/): how to build and publish apps. - [Publish an app](https://github.com/owncloud/marketplace/blob/main/.github/pull_request_template.md): open a pull request to submit a package. - [Source repository](https://github.com/owncloud/marketplace): the marketplace itself.