unFTP is a modern FTP(S) server designed with cloud-native environments in mind. Built on top of the libunftp library and the Tokio asynchronous runtime, it offers a flexible and extensible approach to running FTP services while integrating with modern infrastructure such as cloud storage, monitoring systems, and container platforms.
Unlike traditional FTP servers, unFTP allows developers to customise authentication methods, storage back-ends, and integrations, making it well suited for use in Kubernetes deployments, microservices architectures, and cloud-based workflows.
This is free and open source software.
Key Features
- Asynchronous FTP(S) server built with Rust and the Tokio runtime.
- Supports configurable authentication including anonymous, PAM, JSON file, and HTTP-based methods.
- Flexible storage back-ends such as local filesystem and cloud storage including Google Cloud Storage.
- Extensible architecture allowing custom authentication and storage implementations.
- Explicit FTPS support with TLS, including mutual TLS and session resumption.
- Prometheus integration for monitoring and metrics collection.
- Structured logging with support for external systems such as Redis or cloud logging services.
- HTTP server with health endpoints suitable for Kubernetes readiness and liveness checks.
- Proxy protocol support for use behind load balancers such as HAProxy and Nginx.
- Docker images and container-friendly deployment options.
Website: github.com/bolcom/unFTP
Support:
Developer: bol
License: Apache License 2.0

unFTP is written in Rust. Learn Rust with our recommended free books and free tutorials.
Related Software
| FTP Servers | |
|---|---|
| Pure-FTPd | Fast and secure production-quality and standard-conformant FTP server |
| SFTPGo | Fully featured and highly configurable SFTP server |
| ProFTPd | Highly configurable FTP server software |
| bftpd | Strives to be fast, secure and quick to install and configure |
| tnftpd | Default NetBSD FTP server |
| vsftpd | Fairly minimal FTPd |
| umftpd | Transfer files directly via most file browsers' built-in FTP support |
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