Sync is the end-to-end encrypted cloud storage app for Windows that keeps a local Sync folder mirrored to private cloud storage, so files are backed up, versioned, and shareable without the provider ever holding your encryption keys.
Sync is a desktop client that pairs an ordinary folder on your computer with end-to-end encrypted cloud storage from Sync.com. You install it, choose where that folder lives, and from then on anything you drop, move, or save into it is encrypted on your device and uploaded automatically. The app runs quietly in the Windows system tray and uses overlay icons to show whether each file is synced, indexing, paused, or stuck. Because the Sync folder behaves like any other directory, you can keep working in Word, Photoshop, or File Explorer without changing habits. The practical value is continuous backup and multi-device availability without handing readable copies of your files to the storage provider.
Sync fits teams as well as individuals. Shared links let you send a file or folder to someone without an account, with optional password protection, expiry dates, and download notifications, while team shared folders give members granular access to a common set of documents instead of email attachments. The Vault is a cloud-only area that never syncs down to your machine, which suits archives, media libraries, and anything you want off a laptop. Selective sync trims which folders land on each computer, and on Windows the CloudFiles mode keeps placeholders in File Explorer so large trees stay browsable without consuming disk space. If you are comparing privacy-first providers, Proton Drive takes a similar encrypted approach.
Sync protects your working files the moment you save them, without a second upload step or a separate backup routine. Encryption happens locally, so the cloud copy that Sync.com stores is unreadable to anyone without your credentials, and version history plus deleted-file recovery let you roll back mistakes instead of reconstructing lost work. One folder serves every device: install the app on up to five of your own computers and the same tree appears on each, with selective sync keeping a lightweight laptop free of bulk folders. Sharing stays under your control through passwords, expiry dates, and access notifications, and the Vault gives you cloud-only capacity for material you would rather not keep on a hard drive. You also get visibility, since tray status icons, a progress pane, and CSV export of your file listing make it easy to confirm that everything is actually backed up.
The Sync folder behaves like any ordinary directory on your PC, but every file placed inside it is encrypted on your device and uploaded automatically. There is no separate upload button or manual backup routine, so working out of one folder keeps your documents continuously protected and available across your other devices.
Files are encrypted before they leave your computer, and Sync.com stores only the encrypted result. That means the provider cannot read your documents, photos, or client files, which matters for anyone handling confidential material under privacy obligations or simply wanting cloud storage that does not double as a data-mining surface.
Sync keeps previous versions of files and retains deleted items, so an accidental overwrite, a bad edit, or a mistaken deletion can be undone from the web panel or the desktop app. This turns routine mistakes into a short recovery step rather than a permanent loss of work.
You can share a file or folder by link with people who do not have an account, and add password protection, expiry dates, and access notifications to keep control. Download insights show when a recipient opened or retrieved the content, which is useful when sending proposals, contracts, or design assets.
Team shared folders give each member granular permission to a common set of documents, replacing file servers and email attachments with a single synchronized location. Permissions are managed from the web panel, and members see the shared content directly inside their own Sync folder.
CloudFiles keeps files in the cloud and shows placeholders in Windows File Explorer, so you can browse and search a large library without downloading it all. Only the files you actually open are pulled down, which frees space on laptops and tablets with limited local storage.
Selective sync lets you decide which folders download to each computer. A desktop can hold everything while a travel laptop keeps only current projects, and re-enabling a folder later restores it from the cloud without any data loss or re-uploading on your part.
The Vault is a separate cloud-only area that never synchronizes to your computer, making it suitable for archives, finished projects, and media you want out of reach on a laptop. Content stored in the Vault remains accessible from the web panel and the mobile apps whenever you need it.
No old versions have been added yet.
Sync is used to back up and synchronize files between your computer and Sync.com's encrypted cloud storage. Anything saved in its folder is uploaded automatically, so the same documents are available on your other computers, in the web panel, and in the mobile apps without any manual copying or external drives.
Yes. Files are encrypted on your device before transfer, and the service stores only the encrypted versions. Sync.com cannot read the contents of your documents, photos, or other files, which is why the provider describes the setup as zero-knowledge or end-to-end encrypted storage.
Yes. You can generate a shared link for a file or folder and send it by email or message. Optional password protection, expiry dates, and access notifications let you limit who can open the content and for how long, and you can see when a link was used.
The main folder synchronizes both ways, so changes made on your computer appear in the cloud and on your other devices. The Vault is a cloud-only area that never downloads to your machine, making it a good place for archives and large media you want to keep off local drives.
Yes, through selective sync. You choose which folders the app should download on that machine, and unchecked folders display a status overlay icon so their local copies can be removed without deleting the cloud version. Re-checking a folder later downloads it again.
CloudFiles is an on-demand mode that keeps your files in the cloud and shows them as placeholders in File Explorer. You can browse, search, and open anything as usual, but only the files you actually open are downloaded, which saves disk space on machines with smaller drives.
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