What it is

Sync-in is a self-hosted platform for file storage, synchronization, and team collaboration. It lives in the self-hosted file-management ecosystem, alongside homelab, on-premise, and cloud-alternative use cases. The project is written in TypeScript and licensed under AGPL-3.0.

The platform solves the problem of keeping files, documents, shares, and collaborative work under user control. It provides a workspace where files remain readable on the filesystem, while collaboration features are added only where needed. It is intended for users who want a self-hosted cloud alternative; repository topics name Dropbox and Nextcloud.

Key capabilities

• The web interface supports drag and drop, smart clipboard, gallery view, sorting, filtering, and enhanced file previews.
• Authentication supports local accounts, OIDC, LDAP, MFA, recovery codes, and application passwords.
• Spaces, shares, guests, personal groups, roles, and fine-grained permissions provide controlled collaboration.
• Protected public links support access limits, expiration dates, passwords, and control over shared content.
• Online document editing works with Collabora Online, OnlyOffice, and Euro-Office.
• Activity tracking, comments, notifications, file locking, and recent file updates keep collaboration in one workflow.
• Full-text search indexes deep document content across common office and document formats.

Who uses it and how

• Teams run their own workspace for files, documents, shares, and collaborative editing instead of hosted cloud storage.
• Homelab and on-premise users deploy the server in a private cloud or on-premise environment and keep files readable on the filesystem.
• Organizations use OIDC, LDAP, MFA, and application passwords to control access to spaces, shares, and personal groups.
• Users share content through protected public links with passwords, expiration dates, and access limits.
• Users access files through WebDAV, desktop clients, and CLI clients on Windows, macOS, and Linux, including multi-server synchronization workflows.

Getting started

The README lists Docker setup, NPM setup, GitHub Server, and GitHub Desktop & CLI as setup paths.

When to use it — and when not to

Use Sync-in when operators need a self-hosted file storage, synchronization, sharing, and collaboration platform in the TypeScript and AGPL-3.0 ecosystem. Compared with Dropbox, it keeps data and infrastructure under operator control, but the operator must run the server and any chosen integrations, such as OIDC, LDAP, or document editing services. Avoid it if maturity is a priority: the provided metadata lists 0 contributors, 13 open issues, and a repo age of 0 years.