Can I open-source Sync.com?
KINDA · partial or early alternativesKinda. Nextcloud and Seafile cover the core of Sync.com, but they're early or partial — expect gaps like zero-knowledge architecture, mature sync clients, sharing controls, and support and global sync network.
People still pay for Sync.com because storage subscriptions sell confidence that files will still exist after a lost device, bad sync, or provider incident. The recurring cost buys chunking, encryption, conflict detection, versions, garbage collection, bandwidth, restore drills, monitoring, billing, and disaster recovery, not just the visible interface.
xzero-knowledge architecture, mature sync clients, sharing controls, and support
xglobal sync network
xbattle-tested conflict resolution
xransomware recovery guarantees
xmobile clients and support
These projects already replace it, free.
SSyncthingContinuous peer-to-peer file sync between your devices with no server and no cloud in the middle.open source↗NNextcloudYour own Dropbox plus calendar, contacts, office docs and a huge app store. The default answer to "can I self-host my files?"open source↗EEnteEnd-to-end encrypted photo storage with open-source clients for every platform, so nobody but you can see your library.open source↗What each one is, in full: Syncthing · Nextcloud · Ente
no votes, no pay-to-list · just what's real
Sync.com pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| free | $0/user | $0/user | 5 GB storage; up to 5 devices; 3 password-protected links; 3 shared folders; 30-day history. |
| personal 150 gb | $4/user | $3.50/user | 150 GB storage; unlimited transfer and sharing; 60-day history. |
| personal 1 tb | $16/user | $12/user | 1 TB storage; unlimited transfer and sharing; 90-day history. |
| pro solo 5 tb | $32/user | $28/user | 5 TB storage; unlimited transfer and sharing; 180-day history. |
free tier5 GB storage, up to 5 devices, 3 password links, 3 shared folders and 30-day history
billingmonthly + annual; promotional first-year prices revert to regular renewal prices; 30-day money-back window
hidden costsThe prominent 50% first-year discount on larger plans is temporary; renewal doubles to the regular price. Upgrades are prorated.
verified 2026-08-11 · source ↗
Can I open-source Sync.com?
Kinda. Syncthing covers the core of Sync.com, but there are real gaps: zero-knowledge architecture, mature sync clients, sharing controls, and support, global sync network. Read the honest list above before committing.
How much does Sync.com cost?
Sync.com costs about $4/month (Personal 150 GB, checked 2026-08-11), which is $48 per year.
What do I lose by replacing Sync.com?
Honestly: zero-knowledge architecture, mature sync clients, sharing controls, and support; global sync network; battle-tested conflict resolution; ransomware recovery guarantees; mobile clients and support. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Sync.com?
Yes: Syncthing (Continuous peer-to-peer file sync between your devices with no server and no cloud in the middle.) Nextcloud (Your own Dropbox plus calendar, contacts, office docs and a huge app store. The default answer to "can I self-host my files?") Ente (End-to-end encrypted photo storage with open-source clients for every platform, so nobody but you can see your library.)