Best open-source alternatives to Termius

Termix is an open-source, self-hosted platform for server and infrastructure administration. It is presented as a free alternative to Termius and is aimed at users who need to manage remote systems from a browser, desktop app, PWA, or mobile app. The project combines several administration tools in one interface, including SSH terminal access, remote desktop protocols, file management, tunnel handling, Docker container controls, and server monitoring. It also supports role-based access control, OIDC-based authentication, 2FA, encrypted SQLite-backed storage, and export/import of host and credential data, making it suitable for collaborative self-hosted environments.

WeTTY is a browser-based terminal application that exposes a shell session over HTTP or HTTPS. It is designed for users who want to access a terminal from within a web browser, using xterm.js for terminal emulation and WebSockets for interactive communication. The project supports connecting either to a local login shell or to SSH targets, including remote hosts specified through command-line flags. It is aimed at operators and developers who need convenient remote terminal access, and it can be deployed directly, run as a Docker container, or installed from source during development. The README also points users to documentation for running it as a daemon, enabling HTTPS, automatic login, and downloading files.

ttyd is a lightweight command-line tool that publishes a local terminal session over the web. It is aimed at users who want to access or share a shell through a browser without building a full remote desktop or terminal platform. The project supports a broad set of terminal features, including CJK and IME input, file transfer via ZMODEM and trzsz, and Sixel image output. It can run arbitrary commands, expose a configurable web interface, and secure access with basic authentication or SSL. The README also indicates support for reverse-proxy authentication, making it suitable for self-hosted deployments behind existing web infrastructure. It is distributed across macOS, Linux, FreeBSD/OpenBSD, OpenWrt, and Windows, with installation paths through system package managers, precompiled binaries, snap, and source compilation. The software is intended for browser-based terminal access and collaboration rather than multi-user account management.

ShellHub is a centralized SSH gateway designed for teams that manage Linux devices and servers located behind NAT or firewalls. It lets administrators connect to remote machines through a single server while preserving normal SSH workflows such as `ssh`, `scp`, `sftp`, port forwarding, and browser-based access. The project is aimed at self-hosted operators as well as users of ShellHub Cloud. Devices run a small agent that dials out to the server, which avoids needing a public IP or inbound port on the managed machine. The console is used to create an admin account, organize devices into namespaces and groups, define access policies, and pair or enroll devices at scale.

Nexterm is an open-source server management application aimed at administrators who need a web-based place to connect to and operate infrastructure. It centralizes remote access protocols like SSH, VNC, and RDP, adds SFTP-based file handling, and supports deploying applications through Docker as well as managing Proxmox LXC and QEMU containers. The project also emphasizes access control and organization structure. It supports two-factor authentication and OIDC SSO, and it can separate users and servers into organizations, making it suitable for shared team environments. The README indicates a server/client/engine architecture and provides both Docker images and local development setup instructions.

guacamole-server is the server-side component of Apache Guacamole, a remote access system. It provides guacd, the proxy daemon that sits between the Guacamole web application and remote desktop protocols, translating binary protocols into the text-based Guacamole protocol so they can be handled efficiently by the browser-based client. The project is aimed at technical users who want to compile Guacamole components themselves or build a Guacamole deployment from source. The README focuses on the build process, required and optional libraries, and how to run guacd either through an init script or directly from the command line. It also highlights support for multiple remote protocols and related capabilities such as audio, SFTP transfer, and media utilities.

Sshwifty is a web-based SSH and Telnet client designed for accessing remote systems directly from a browser. It is aimed at users who want a browser-accessible terminal front end rather than a native desktop client, and it supports connecting to both SSH and Telnet services. The project can be deployed through prebuilt executables, a Docker image, or by compiling from source. Its configuration model includes file-based and environment-variable options, support for multiple HTTP servers, proxying through Socks5, TLS handling, and server-side hooks for customizing connection behavior. The README also mentions a third-party Homebrew formula for macOS installation.

ColliePWA is a self-hosted mobile web app designed for developers who want to monitor and interact with terminal-based AI agents from a phone. It targets workflows around Herdr, with experimental support for tmux and zellij, and presents a phone-friendly interface for seeing which agent needs attention, sending input, and managing sessions without wrestling with terminal key chords on a touchscreen. The project emphasizes remote control over a private Tailscale tailnet and warns that it provides direct shell access to the host. It includes a dashboard, push notifications, a special-keys pad, quick replies, file browsing and diff viewing, device pairing, and multilingual UI support. Installation is offered via a download-and-run script, manual/source builds, and platform-specific setup documentation.