One fast client for every bucket and server
Varv is a modern Windows transfer client for S3, R2, MinIO, B2, FTP and SFTP. Transfers that survive crashes, everything a keystroke away, and speed you can feel.
Windows 10/11 · x64 & ARM64 · tiny installer
| name | size | modified | storage class |
|---|---|---|---|
| assets/ | |||
| backups/ | |||
| site-media.zipbrowse inside | 1.2 GB | 2026-07-11 09:14 | STANDARD |
| dataset-export.parquet | 482.7 MB | 2026-07-10 22:03 | STANDARD |
| app-v0.9.3-x64.msi | 11.8 MB | 2026-07-10 18:40 | STANDARD |
| inventory-2026-07.csv | 68.4 MB | 2026-07-09 04:12 | STANDARD_IA |
| video-master-4k.mov | 24.6 GB | 2026-07-08 16:55 | GLACIER_IR |
Works with
- Amazon S3
- Cloudflare R2
- MinIO
- Backblaze B2
- Wasabi
- DO Spaces
- Hetzner
- Scaleway
- Storj
- Tigris
- FTP / FTPS
- SFTP
01 · Connect
Pick a provider, paste your keys, done
Every provider comes preset, so the technical quirks are handled for you. Switching tools? Bring your saved connections from your current app in one click. Your keys live in the Windows keychain, never in a file.
- Cloudflare R2jurisdiction endpoints
- MinIOpath-style addressing
- Backblaze B2applicationKeyId
- import from your current client, one click
02 · Browse
Buckets with millions of files, browsed like a local folder
Huge buckets stay instant. Search everything by name, size or date and jump anywhere with Ctrl K. Zip archives open in place, even zips inside zips, no download first.
- events-2026-06-30.parquet 312 MB
- clickstream-agg.parquet 148 MB
- features-wide.parquet 102 MB
indexed: 4,218,466 objects · 38 ms
03 · Transfer
A queue that survives crashes, kills and flaky Wi-Fi
Progress is saved to disk as it happens. Close the app mid-upload, or crash it, and everything picks up exactly where it stopped. Pause, reorder, set speed limits, or drag files straight out to Explorer.
04 · Verify
Every file checked, nothing silently half-saved
Finished transfers are verified complete and uncorrupted. A dropped connection means a retry, not a broken file you find next week. New servers ask for your approval the first time you connect.
- sha256 dataset-export.parquet ok
- crc32c multipart assembly ok
- length check video-master-4k.mov 24,613,882,112 / 24,613,882,112
- tls pin r2.cloudflarestorage.com match
- host key nas-01 changed: trust prompt
Why it feels fast
Native code
The heavy lifting runs as real native code, not a browser in disguise. Written in Rust, for those who care.
Loses nothing
Every transfer is written to disk as it happens. A crash costs milliseconds, not gigabytes.
Keys stay yours
Credentials live in the Windows keychain. No plaintext files, no bundleware, no tracking.
And the rest of the toolbox
Command palette
Ctrl K jumps to any bucket, file or action.
Edit in place
Change remote files right where they live, safely.
Versioning
Bring back older versions of any file.
Bucket settings
Lifecycle, policies and CORS without the web console.
Share links
Links to any file that expire when you say so.
Save as zip
Turn any selection into a local zip, no temp files.
Speed limits
Cap uploads and downloads independently.
Keyboard first
F2 rename, Del delete, right-click menus everywhere.
Your buckets deserve better than 2009
First release is close. Leave your email and get the installer the day it ships.
Get notified at launch