Free SFTP server for Windows
A free SFTP server,
up and running in 60 seconds
Unzip, run the .exe, press Start. Done.
- no installer
- no signup
- no account
Free even for commercial use.
Free download (Zip, 2MB)Built to be tiny on purpose
Perfect when you need a server now and gone tomorrow.
Great for
- Local SFTP client development & testing
- Quick & dirty file sharing
- Throwaway, single-user setups
Key features
- Free, even commercially · single user (read/write)
- Password or public/private-key auth (RSA/DSA)
- Runs on any Windows with .NET 4.0, such as Windows 10, 11
- Open source
Ideal for
One user, one folder, and the password is stored in a clear-text config file. Fine for dev, testing and quick sharing — not for real passwords or production.
Stay Tiny, or move up to Buru Server?
Pick for the job, not the price — both are free to try.
Stay on Tiny Server
Use Tiny SFTP if you…
- just need a server for dev / testing
- share files quickly, one user
- want zero install, zero cost
- don't need to store real passwords
Free download (Zip, 2MB)
free forever for all purposes
Upgrade to Buru Server
Choose Buru if you…
- run a real / production server
- need multiple users & folders
- want a Windows service + web admin
- need secure auth, AD, SFTP/FTP/SSH
- need business support
Try Buru Server free for 30 days
free forever for non-commercial use
Documentation
Source code
- Source code customization
- GitHub project
- Rebex File Server - commercial library used as the core of both Tiny SFTP Server and Buru SFTP Server.




