4Sync vs Filen
4Sync
4sync.com
Filen
filen.ioSide by side
| Figure | 4Sync | Filen |
|---|---|---|
| Price from | $8.25/mo | €1.99/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Plans published | 3 | 6 |
| Spec score · Cloud Storage Services | 9.0 (#13) | 9.3 (#4) |
| Spec score · Cloud storage | 8.3 (#37) | 9.1 (#13) |
| Device platforms | Windows,macOS,iOS,Android | Windows,macOS,Linux,iOS,Android |
| File versioning | Yes | Filen supports reverting files to previous versions. |
| Free plan | No | Yes |
| Integrations | The help page describes connecting Facebook to share files with friends and importing contacts from Gmail for referrals. | The CLI and desktop client can run local WebDAV and S3-compatible mirror servers. |
| Storage limit | 1000 | 200 |
| Support | 4Sync provides a Help page with instructions for account verification, password recovery, uploading, downloading, and sharing files. | The home page advertises 24/7 customer support through its support panel and contact channels. |
Plans
Filen
- Pro I€1.99 a month
- Pro II€3.99 a month
- Pro III€8.99 a month
- Pro X€39.99 a month
- FreeFree
- Free accountFree
In their own words
Filen
Filen is a cloud storage service that encrypts data on the client before storage, using zero-knowledge, end-to-end encryption. It supports syncing, network-drive access with Smart Sync and five sync modes across Windows, macOS, Linux, iOS, Android and the web. Mobile apps include encrypted camera uploads, offline files, notes, chats and notifications. Encrypted notes support rich text, code, Markdown and checklists, while chats are end-to-end encrypted. Developers can use the documented API, command-line interface and TypeScript, Rust and Go SDKs. The desktop client and CLI can run local WebDAV and S3-compatible mirror servers. Filen says its apps are open source under AGPL v3 and that its headquarters and servers are in Germany. The free account includes 10GB storage. Paid monthly plans start with Pro I at €1.99 a month for 200 GiB; higher tiers offer 500 GiB, 2 TiB or 10 TiB. Filen says data in free accounts is deleted after three months of inactivity, with reminder emails beforehand.