What is Sync-in used for?

Sync-in is a self-hosted platform for file storage, synchronization, sharing, and team collaboration that keeps files readable on your own filesystem. It is a good fit for self-hosted file sync for a homelab.

Is Sync-in open source?

Yes. Sync-in is open source under the AGPL-3.0 licence. Its source code is on GitHub at Sync-in/server and is written mainly in TypeScript.

Yes. Sync-in is open source, so the software itself is free to use.

Can I self-host Sync-in?

Yes. Sync-in can be self-hosted on your own server or infrastructure.

What is Sync-in an alternative to?

Sync-in is an open-source alternative to Dropbox, Box, Google Drive and Microsoft OneDrive. Other open-source alternatives to Dropbox include ownCloud, Nextcloud All-in-One and Nextcloud.

Is Sync-in actively maintained?

Yes. The most recent commit to Sync-in was on 2 October 2026, and the latest release is v2.5.2, published on 21 September 2026. The project has 1.8k stars on GitHub.

Sync-in: open-source alternative to Dropbox, Box

About Sync-in

Sync-in is a self-hosted platform for file storage, synchronization, and team collaboration. It lets you run your own workspace for files, documents, shares, and collaborative work while keeping control of your infrastructure and data. It is designed to stay fast and lightweight, keeping files readable on the filesystem and adding collaboration features only where needed. It is written in TypeScript and released under the AGPL-3.0 license.

The web interface offers drag and drop, a smart clipboard, gallery view, sorting, filtering, and file previews. Authentication supports local accounts, OIDC, LDAP, MFA, recovery codes, and application passwords, and files are organized into spaces and shares. Topics list full-text search, real-time collaborative editing, WebDAV, and a desktop and command-line sync client.

Installation is documented for Docker and for NPM, and a demo is available. The project positions itself as a private cloud alternative to Dropbox and Nextcloud, suiting organizations, homelab users, and teams that want sovereign file sharing.

Key features

Web file manager with previews and gallery
File synchronization with desktop and CLI clients
Spaces and shares with permissions
Local, OIDC, LDAP, and MFA authentication
Full-text search
WebDAV and collaborative editing

Good fit for

→Private alternative to Dropbox for a team
→Self-hosted file sync for a homelab

Built with: TypeScript
Tags: file-sync; file-storage; self-hosted; collaboration; webdav; private-cloud; nextcloud-alternative; typescript

Sync-in: questions and answers

What is Sync-in used for?: Sync-in is a self-hosted platform for file storage, synchronization, sharing, and team collaboration that keeps files readable on your own filesystem. It is a good fit for self-hosted file sync for a homelab.
Is Sync-in open source?: Yes. Sync-in is open source under the AGPL-3.0 licence. Its source code is on GitHub at Sync-in/server and is written mainly in TypeScript.
Is Sync-in free?: Yes. Sync-in is open source, so the software itself is free to use.
Can I self-host Sync-in?: Yes. Sync-in can be self-hosted on your own server or infrastructure.
What is Sync-in an alternative to?: Sync-in is an open-source alternative to Dropbox, Box, Google Drive and Microsoft OneDrive. Other open-source alternatives to Dropbox include ownCloud, Nextcloud All-in-One and Nextcloud.
Is Sync-in actively maintained?: Yes. The most recent commit to Sync-in was on 2 October 2026, and the latest release is v2.5.2, published on 21 September 2026. The project has 1.8k stars on GitHub.