Let the transfer run. Keep the tab closed.
The desktop app is for project folders, overnight sends, and downloads too large to babysit in a browser. The yasync CLI brings the same resumable multipart workflow to servers and pipelines.
Current status: a Developer ID-signed Apple Silicon macOS preview has passed local transfer, resume, checksum, and launch tests. It is not notarized or publicly downloadable yet. Windows and Linux packages remain planned targets.
Desktop app downloads
macOS
macOS 11 or later
.dmg · .dmg
Windows
Windows 10 or later, x86_64
.msi
Linux
x86_64
.AppImage · .deb · .rpm
Public builds will appear here only through GitHub Releases, with their SHA-256 checksum shown — we never link a binary that hasn’t been through the release pipeline. Until v0.1.0 lands, the web uploader at the top of the homepage is ready for quick sends.
CLI engine built. Public binaries pending.
The yasync CLI is the same tested transfer engine, headless — for pipelines, render farms, servers, and cron jobs. The commands below are a preview; no public CLI binary or installer is published yet.
Preview syntax
$ yasync send ./final-renders --password
https://yasync.com/t/k7f2m9qxyasync send prints a share link — logged out too, on the anonymous tier. yasync receive pulls a link down, yasync ls and yasync rm manage your transfers, and --json makes every command machine-readable. Full reference on the developers page.
One-line installcoming soon
Install script not publishedThere is no command or public install path yet. A verified command will appear only after the release manifest is populated and the installer itself is published.
Direct binaries
macOS · Apple Silicon binary
PlannedmacOS · Intel binary
PlannedLinux · x86_64 binary
PlannedWindows · x86_64 .exe
PlannedWhy a desktop app at all?
Parallel multipart engine
The same direct-to-storage protocol as the web uploader, minus the browser tab. Multiple bounded parts stay in flight for terabyte-class sends.
Keeps its place
Sleep, Wi-Fi changes, restarts — persisted transfer state lets uploads and downloads continue without redoing completed parts. Built for overnight transfers.
Local checksum verification
The sender computes a whole-file CRC32 locally. When that checksum is available, the desktop downloader compares it with the bytes written to disk.
Drop a folder — get a link
Drag a whole project folder onto the app and get one short link back, structure intact. No zipping, no staging, no babysitting.
Need to send now? The browser handles quick transfers. For automation, use the REST API or connect an MCP client; both return upload plans so file bytes still travel directly to storage.