Rebex Tiny SFTP Server

rebex.net · checked 9 Oct 2026

#19 · FTP Server Software

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How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on FTP Server Software6.0#19 of 33

Rebex describes Tiny SFTP Server as a small server for local SFTP client development, testing, quick file sharing, and throwaway single-user setups.

Pricing

Rebex Tiny SFTP ServerSingle user (read/write) · free for all purposes, including commercial use · Windows with .NET 4.0Free

As rebex.net lists them, checked 9 Oct 2026.

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Facts

Website: rebex.net
Price: Free tier
Free trial: No
Authentication: It supports password authentication and public/private-key authentication using RSA or DSA keys.
Configuration: Settings are stored in an XML configuration file, including the port, IP bindings, root folder, keys, and enabled encryption ciphers; changes require an application restart.
File access: The server provides one user with read/write access to a configured root data folder.
Founded: 1995
Headquarters: Prague, Czech Republic
Intended use: Rebex says Tiny SFTP Server is for development, testing, and quick sharing, and advises against using real passwords or production workloads with it.
Maker: Rebex says it creates and ships .NET applications and components worldwide and is located in Prague, Czech Republic.
Recent security update: Release 1.0.24 added ML-KEM post-quantum key agreement support and rejected non-standard public key formats during SSH negotiation.
Security limitation: The password is stored in a clear-text configuration file and is displayed in the server application window by default.
Setup: The product page says to unzip the download, run the executable, and press Start; it requires no installer, signup, or account.
Source code: The product page identifies Tiny SFTP Server as open source and links to its GitHub project.
Support: The product page lists email support at [email protected] and a support forum.

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