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Sync.com alternatives · File Storage

Open-source alternatives to Sync.com

Sync.com is not described as open source on its own site. 5 of the 16 other file storage and sync services in this directory are open source, according to their own sites.

Sync.com has a free plan. Paid plans start at $6 per user / month, billed annually (3-user minimum). All of them are free or have a free plan.

5 tools · Listings checked up to Oct 5, 2026 · Where the facts come from

How each one differs from Sync.com

  1. Proton Drive

    End-to-end encrypted cloud storage from the maker of Proton Mail

    • Proton Drive starts at $3.99 per month, billed yearly. Sync.com starts at $6 per user / month, billed annually (3-user minimum).
    • Proton Drive is open source, according to its own site.
    • Proton Drive also covers documents and spreadsheets.
    Proton Drive vs Sync.comProton Drive pricing and details

  2. Filen

    End-to-end encrypted cloud storage from Germany with open source apps

    • Filen starts at €11.99 per year for 100 GiB, or €1.99 per month for 200 GiB. Sync.com starts at $6 per user / month, billed annually (3-user minimum).
    • Only Filen lists a Linux app.
    • Filen is open source, according to its own site.
    • Filen also covers notes.
    Filen pricing and details

  3. Nextcloud

    Open source, self-hosted file sync and collaboration platform

    • Nextcloud starts at 71.29€ per user / year, excl. VAT (from 100 users). Sync.com starts at $6 per user / month, billed annually (3-user minimum).
    • Only Nextcloud lists a Linux app.
    • Nextcloud is open source and self-hostable, according to its own site.
    • Sync.com is end-to-end encrypted, according to its own site.
    Nextcloud pricing and details

  4. Internxt

    Open source, zero-knowledge cloud storage with lifetime plans

    • Internxt starts at $11.99 per month, billed annually (list price). Sync.com starts at $6 per user / month, billed annually (3-user minimum).
    • Only Internxt lists a Linux app.
    • Internxt is open source, according to its own site.
    • Internxt can be bought with a one-time purchase.
    Internxt pricing and details

  5. Syncthing

    Free, open source file sync directly between your own devices

    • Syncthing is free. Sync.com starts at $6 per user / month, billed annually (3-user minimum).
    • Only Syncthing lists a Linux app.
    • Only Sync.com lists a web app.
    • Only Sync.com lists iOS and Android apps.
    Syncthing pricing and details

Common questions

Is there an open-source alternative to Sync.com?

Yes. Proton Drive, Filen, Nextcloud, Internxt and Syncthing are open source, according to their own sites.

Is Sync.com open source?

Sync.com is not described as open source on its own site. The listing was checked on Oct 5, 2026 against the pages it cites.

When was this checked?

Every listing on this page was checked on Oct 5, 2026, against the pages it cites. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Sync.com: the alternatives its listing names first, then the tools that share the most features with it.