LibreBooking vs Zellij

LibreBooking is an open-source resource scheduling system for organizations that manage reservations. It supports bookings across multiple resources, waitlists and recurring bookings, with check-in for reservations. Role-based access controls, reservation quotas and credits, and granular usage reports help organizations manage access and track use. The interface is described as mobile-friendly and responsive, with custom themes and color schemes. Calendar integration with Outlook and Thunderbird uses ICS; authentication guides cover LDAP, Active Directory, OAuth2 and SAML. An optional RESTful JSON API supports third-party integrations, automation or client applications, and the project provides documentation for custom plugins. Organizations can install a prebuilt release, deploy with Docker, or install manually. Manual installation requires PHP 8.2 or later, Apache 2.4 or later, and MySQL 8.0 or MariaDB 10.6 or later; other web servers are not currently supported or tested. LibreBooking is free, licensed under GPL-3.0, and available for Linux, self-hosted and web use. The README warns that versions earlier than 7.0.0 have a critical vulnerability that can permit unauthenticated administrator account takeover; it says to upgrade to 7.0.0 or later immediately.

Zellij is a terminal workspace for developers, operations-oriented users, and others who work in a terminal. It organizes work into tiled, floating, or stacked panes, which can be moved and resized with a mouse or keyboard. KDL layouts can define panes, tabs, commands, and plugins for repeatable workspace setups. Users can switch between named sessions and restore session structure and commands, including after reboots. A built-in web server enables browser access and remote session sharing over HTTPS; read-only tokens let observers view without interacting. The server is off by default, requires authentication, and its documentation recommends a reverse proxy on untrusted networks because it has no rate limiting. Plugins use WebAssembly and can be written in any language that compiles to WASM; Rust has an official SDK and scaffolding tools. Zellij works with existing terminal emulators, shells, and editors, but runs inside a terminal rather than replacing it. Zellij is free and open source at free, with no account required. Zellij.online is a paid hosted session-sharing service with a free tier and is described as being in closed beta.