Server Management

docker-mailserver provides a complete, production‑ready mail server stack packaged as a single Docker image. It bundles Postfix, Dovecot, SpamAssassin, ClamAV and other components, making deployment and management simple for developers and sysadmins. The solution runs on any Linux host with Docker, offering self‑hosted email with TLS, DKIM, SPF and easy user management via environment variables or mounted configuration files.

✦ Best for developers and sysadmins needing a ready‑made dockerized mail server

Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. It provides a comprehensive overview of server performance and helps teams identify and resolve issues quickly.

✦ Best for github open-source maintainers

nps is a powerful, lightweight, and high-performance intranet penetration proxy server. It supports various protocols such as TCP, UDP, SOCKS5, and HTTP, allowing for flexible and efficient traffic forwarding.

✦ Best for exposing services behind nat or a firewall via intranet tunneling

frp (Fast Reverse Proxy) is an open-source, self‑hosted solution that enables developers and IT professionals to expose local services to the internet securely. It works across Web, Windows, macOS, and Linux, providing flexible TCP, UDP, HTTP, and HTTPS tunneling. Designed for simplicity and performance, frp lets you configure proxy rules via a lightweight client‑server model, making it ideal for remote debugging, IoT device access, and internal tool exposure without complex VPN setups.

✦ Best for devops teams needing free, self‑hosted tcp/udp reverse proxy

SRS (Simple Realtime Server) is a high-efficiency open-source media server for live video. It ingests and delivers streams over RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH and GB28181, with codec support for H.264, H.265, AV1, VP9, AAC, Opus and G.711. The server is highly configurable, clusters well for large audiences, and integrates with existing workflows through its broad protocol support.

✦ Best for developers needing a free, customizable real‑time streaming server

CasaOS is an open-source home cloud system that turns a spare machine or Raspberry Pi into a personal server. It sits on top of Docker and provides a web dashboard and an app store, so self-hosted applications can be installed and managed without working directly with containers on the command line.

✦ Best for anyone standing up a first home server without deep docker knowledge