{"rewrite":{"id":"r_95fcbfda90e4c26e48ede507","clusterId":"c_8ebc2576f11c14a7f353ebed","slug":"sync-in-offers-free-self-hosted-file-sync-for-windows-mac-linux","model":"deepseek-v4-flash","headline":"Sync-in Offers Free Self-Hosted File Sync for Windows, Mac, Linux","summary":"Sync-in is a free, open-source file sync server that can be self-hosted. It provides GUI clients for Windows, macOS, and Linux. Features include bidirectional and unidirectional sync, automatic background sync, multi-user support, and detailed permission settings. The article covers the setup process for the server and client.","whyItMatters":"For organizations that cannot use cloud services due to security policies, Sync-in offers a self-hosted alternative with full control over data.","webCardHtml":"\u003cp\u003eThe Sync-in project is hosted on GitHub and provides a live demo site for testing. The server runs in Docker and can be set up with a few commands. The client installers for Windows, macOS, and Linux are available from the project\u0026#39;s downloads page. Sync-in distinguishes between personal folders synced across devices and shared spaces for team collaboration. Permission settings allow granular control over file access per user or group. The review demonstrates the complete setup process from server deployment to client connection.\u003c/p\u003e","blueskyPost":"Sync-in is a free self-hosted file sync server with clients for Windows, macOS, and Linux. It supports bidirectional sync, user permissions, and shared spaces. A good option for teams that need to keep data on their own infrastructure.","twitterPost":"Sync-in is a free self-hosted file sync server with clients for Windows, macOS, and Linux. Supports bidirectional sync, user permissions, and shared spaces. Good for teams that need to keep data on their own infrastructure.","threadsPost":null,"newsletterBlurb":"Sync-in is a free, open-source file sync server that can be self-hosted. It offers GUI clients for Windows, macOS, and Linux, with features like bidirectional sync, multi-user support, and permission controls. The tool is designed for organizations that need to keep data on their own infrastructure.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260718-sync-in/\",\"title\":\"Sync-in: Free Desktop Sync App for Windows, macOS, and Linux with Self-Hostable Server for Bidirectional and Unidirectional File Sync, Automatic Background Sync, and Multi-User Support\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4257,"outputTokens":1447,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1784373808,"createdAt":"2026-07-18T11:20:18.000Z","publishedAt":"2026-07-18T11:22:28.000Z","updatedAt":"2026-07-18T11:20:18.000Z"},"cluster":{"id":"c_8ebc2576f11c14a7f353ebed","canonicalTitle":"無料でWindows・macOS・Linux用のデスクトップ同期アプリとセルフホスト可能なサーバーアプリでファイルの双方向と一方向同期・自動バックグラウンド同期などが複数ユーザーで可能な「Sync-in」","representativeArticleId":"a_02a3a45c7b7db57535105843","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-07-18T09:00:00.000Z","lastSeenAt":"2026-07-18T09:00:00.000Z","updatedAt":"2026-07-18T11:22:28.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260718-sync-in/","title":"無料でWindows・macOS・Linux用のデスクトップ同期アプリとセルフホスト可能なサーバーアプリでファイルの双方向と一方向同期・自動バックグラウンド同期などが複数ユーザーで可能な「Sync-in」"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":[],"type":"news","domain":"other","is_roundup":false},"keyFacts":null}