Cloud Storage
7 open source tools compared. Sorted by stars. Scroll down for our analysis.
| Tool | Stars | Velocity | Score |
|---|---|---|---|
 Syncthing Open source continuous file synchronization | 85.9k | +265/wk | 81 |
 MinIO High-performance S3-compatible object store | 61.2k | +20/wk | 76 |
 Rclone rsync for cloud storage — 70+ backends | 58.0k | +88/wk | 86 |
 Nextcloud Self-hosted cloud platform | 36.0k | +72/wk | 73 |
 FileBrowser Web-based file browser and manager | 35.3k | +105/wk | 83 |
| 29.2k | +219/wk | 83 | |
 files-sdk A unified storage SDK for object and blob backends. One small, honest API. Web-standards I/O. | 1.4k | +90/wk | 68 |
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Our Analysis
Syncthing does peer-to-peer file synchronization between your devices: laptop, phone, NAS, server. No central server, no account, no subscription. Your files go directly between your devices, encrypted in transit. Mozilla Public License 2.0, written in Go. It's like Dropbox but you own every piece of it. Set it up on two devices, point them at a folder, and changes sync automatically. It handles conflict resolution, versioning, and works across NATs without port forwarding (using relay servers for discovery, but actual data transfer is direct when possible). Everything is free. No paid tier, no premium features, no cloud storage costs. You're using your own devices' storage. The catch: there's no web interface for accessing files remotely. It syncs between devices that are running Syncthing. If your laptop is off, your phone can't pull a file from it. Dropbox/Google Drive solve this with always-on cloud storage. Syncthing also requires at least basic technical comfort to set up. It's not "install and drag to folder" simple. And mobile support (Android) works but is a second-class citizen compared to the desktop experience. iOS has no official app.
MinIO was the default open source answer to Amazon S3: a fast, S3-compatible object store you ran anywhere as a single Go binary. That story has changed. The company pivoted to a commercial product called AIStor, the community edition is now distributed as source only with no prebuilt binaries, and the open repository has been archived. The code is still AGPL and still works, but the project's momentum has clearly moved behind the paywall. Before the pivot, MinIO quietly pulled most of the management features out of the open source console: user and policy management, configuration, and monitoring moved to the paid product, leaving the community build with little more than a basic object browser. You can still self-host the server and it still speaks S3 to every tool that expects it. But you are now compiling from source, administering through the command line and config files, and running software the maintainer has effectively stopped developing in the open. For a brand new project, this is hard to recommend as a foundation in 2026. If you already run MinIO and it works, there is no fire to put out, the S3 API is stable. Solo and small teams who just need S3-compatible storage should look at alternatives like SeaweedFS, Garage, or Ceph's object gateway before betting on a frozen project. Teams that want MinIO's old polish and real support are exactly who AIStor is priced for, and that is the point. The catch is the pattern. A tool earns its reputation as the free, no-nonsense S3 replacement, builds a huge install base, then moves the useful parts and the active development behind a commercial product. The code you already have keeps running. The open project you were counting on does not keep growing.