Sync-in

A self-hosted workspace for storing, syncing and sharing team files, with desktop and CLI clients, WebDAV, online document editing and full-text search.

2k stars, 160 forks TypeScript On GitHub since July 2025

Visit website View on GitHub How to run it

Sync-in at a glance

Open sourceYes, AGPL-3.0No paid parts in the repository
Health84 of 100Actively developed
Self-hostingDockerOne-click in YunoHost, Unraid and 1 more
Interface50 languagesIncluding English, German and French
Issue repliesWithin ~28 hoursMedian first reply; 89% of recent issues answered

What is Sync-in?

Sync-in is a server for team files that keeps them as ordinary readable files on disk and layers collaboration on top. The browser interface supports drag and drop, a gallery view and previews, while spaces, shares, guest accounts, roles and per-item permissions control who sees what. Public links can carry passwords, expiry dates and access limits. Documents open for editing in Collabora Online, OnlyOffice, Euro-Office or draw.io, and an indexer searches inside office files. Separate clients for Windows, macOS and Linux sync with several servers, and WebDAV covers file managers and mobile apps. Logins work with local accounts, OIDC or LDAP, plus MFA.

Good fit if

  • Your team wants shared spaces, guest access and controlled public links on its own hardware.
  • You want files to stay plain on the filesystem rather than locked in a proprietary store.
  • Staff need to search the text of office documents and edit them in the browser.

Look elsewhere if

  • You need a mature suite with many more apps and a long track record: Nextcloud or Seafile.
  • You want peer-to-peer sync with no central server: Syncthing.

Before you adopt it

Sync-in is under the AGPL, so a modified version offered over a network must have its source published. There are no paid parts in the repository, but contributors must sign a CLA, and the name is a registered trademark with its own policy. The repository dates from 2025 and moves quickly, with 285 commits in the last 90 days, yet one developer accounts for about nine in ten of them. Docker and npm setups exist; the compose file pairs the server with MySQL. Translation files cover 50 languages.

Drafted with AI from the project's README and repository data, then checked against that data on 7 November 2026. Report a correction

How to run Sync-in yourself

One-click install

Not listed in Umbrel, TrueNAS, CasaOS, Runtipi and Coolify. Checked against each panel’s app catalog on 12 November 2026.

Ways to install

Docker files
Dockerfile or compose file in the repository
Docker image
syncin/server: 420k pulls · x86-64, ARM64 · 143 MB download
Compose file
docker/docker-compose.yaml: 2 services (mysql)
Setup effort
2 of 5, judged from the compose file
Kubernetes
No Helm chart in the repository
Desktop and mobile
No app builds in GitHub releases
Interface languages
50 languages, including English, German, French, Spanish, Portuguese, Dutch, Polish, Russian, Ukrainian and Turkish
Show all 50

Afrikaans, Albanian, Bosnian, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Esperanto, Estonian, Finnish, French, Galician, Georgian, German, Greek, Hindi, Hungarian, Igbo, Irish, Japanese, Kazakh, Korean, Lao, Latvian, Lithuanian, Macedonian, Malay, Mongolian, Norwegian Nynorsk, Polish, Portuguese, Romanian, Russian, Serbian, Sinhala, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Thai, Turkish, Ukrainian, Uzbek, Vietnamese

Install instructions: sync-in.com or the README on GitHub. Docker images and packages are checked weekly.

Sync-in health: is it still maintained?

84 of 100, actively developed

Release rhythmEvery ~10 daysLatest: v2.6.3, 9 November 2026
Issue repliesWithin ~28 hoursMedian first reply; 89% of recent issues answered
Bus factorHigh riskThe most active of 8 authors wrote 91% of recent commits
  • Activity
    298 commits in the last 90 days, the latest on 12 November 2026.
    30 / 30
  • Contributors
    8 people wrote the latest 100 commits; the most active wrote 91% of them.
    13 / 20
  • Releases
    15+ releases in the last 12 months; the latest, v2.6.3, on 9 November 2026.
    19 / 20
  • Replies to issues
    Maintainers answered 89% of recent issues, with a median first reply after 28 hours.
    17 / 20
  • Security practices
    No OpenSSF Scorecard for this repository yet, so this part gets a neutral score.
    5 / 10

Read from GitHub on 12 November 2026. How the score works

Sync-in security

Security advisories are the vulnerabilities the maintainers disclosed on GitHub, with the versions that fix them; many advisories can mean careful disclosure as much as weak code.

Security advisories18 published4 high; all list a fixed version

Latest advisories

All 18 advisories on GitHub

Advisories read from GitHub on 12 November 2026.

Sync-in license: is it open source?

Sync-in uses AGPL-3.0, an open-source license approved by the OSI. Contributors sign a contributor license agreement, which lets the owner relicense their work later.

  1. July 2025First published on GitHub.
  2. TodayAGPL-3.0. A contributor license agreement is required.

Sync-in for developers

Written in

  • TypeScript 84%
  • HTML 10%
  • SCSS 4%
  • Rich Text Format <1%
  • JavaScript <1%
  • Other <1%

Getting involved

Contributing guideYesCONTRIBUTING.mdOpen issues14On GitHub
Authors, 90 days8Of the latest 100 commits
Donations3 waysGitHub Sponsors, Liberapay, own page

Language shares are GitHub’s count of the code in the repository.

Alternatives to Sync-in

  • NextcloudNextcloud server, a safe home for all your data 90 health · AGPL-3.0 · 37.5k stars
  • ownCloudownCloud web server core (Files, DAV, etc.) 79 health · AGPL-3.0 · 8.8k stars
  • SeafileBeyond file syncing and sharing, a new way to organize your files with extensible file properties and… 38 health · GPL-2.0 · 15.5k stars
  • copypartyPortable file server with accelerated resumable uploads, dedup, WebDAV, SFTP, FTP, TFTP, zeroconf, media… 75 health · MIT · 47.3k stars
  • FilestashUniversal File Management Platform (for humans and agents) 52 health · AGPL-3.0 · 14.9k stars

All 18 projects in File storage & sync

Questions about Sync-in

Is Sync-in open source?

Yes. Sync-in is published under AGPL-3.0, an OSI-approved open-source license.

Is Sync-in still maintained?

Its health score is 84 of 100 (actively developed). It had 298 commits in the last 90 days, the latest on 12 November 2026, and its latest release came out on 9 November 2026.

How do I run Sync-in?

You can run it with the Docker image syncin/server and in one click from YunoHost, Unraid and Proxmox VE Helper-Scripts. The README on GitHub has the exact steps.

What is Sync-in written in?

Sync-in is written mainly in TypeScript (84% of the code), with HTML (10%), by GitHub’s count of the repository.

What languages is Sync-in available in?

The repository has interface translations for 50 languages, including English, German, French, Spanish, Portuguese, Dutch, Polish and Russian.

What are the alternatives to Sync-in?

Close alternatives in the File storage & sync category include Nextcloud, ownCloud, Seafile.