Free and Open Source Software

posted by Rianne Schestowitz on Nov 30, 2025

• Joker - small Clojure interpreter, linter and formatter - LinuxLinks

  Joker is a small Clojure interpreter, linter and formatter written in Go.

  As with Clojure, Joker supports “libraries” of code organized into namespaces. It offers a number of namespaces that are built-in to the Joker executable itself, as well as the ability to dynamically (at run time and on-demand) extend these namespaces via external Joker source files typically organized into directory trees and deployed alongside the Joker executable. (Currently, Joker does not support dynamic extension via non-Joker code, such as Go plugins.)

  This is free and open source software.

• spectroterm - curses based terminal spectrum analyzer - LinuxLinks

  spectroterm is a curses based terminal spectrum analyzer for currently playing audio.

  This is free and open source software.

• tray-tui - system tray implementation - LinuxLinks

  tray-tui brings system tray functionality to the terminal, displaying tray menus as interactive trees. This allows for seamless navigation of tray menu items and quick actions, all within a TUI environment.

  This is free and open source software.

• passless - software FIDO2 authenticator - LinuxLinks

  passless is a software FIDO2 authenticator that emulates a hardware security key. It’s built with soft-fido2 and runs as a virtual UHID device on Linux.

  This is free and open source software.

• blue - Python code formatter - LinuxLinks

  blue is a somewhat less uncompromising code formatter than black, the OG of Python formatters.

  This is free and open source software.

• fsel - fast TUI app launcher and fuzzy finder - LinuxLinks

  fsel is a fast TUI app launcher and fuzzy finder for Linux and *BSD.

  This is free and open source software.

• wifitui - fast featureful friendly wifi terminal UI - LinuxLinks

  wifitui is a fast, featureful, and friendly replacement for nmtui.

  This is free and open source software.

• kbd-backlight - intelligent keyboard backlight daemon - LinuxLinks

  kbd-backlight is an intelligent keyboard backlight daemon for Linux laptops with automatic brightness control based on idle time, video playback, power state, WiFi location, and time schedules.

  This is free and open source software.

• Vigil - microservices status page - LinuxLinks

  It is useful in microservices contexts to monitor both apps and backends. If a node goes down in your infrastructure, you receive a status change notification in a Slack channel, Email, Twilio SMS or/and XMPP.

  Vigil monitors all your infrastructure services. You first need to configure target services to be monitored, and then Vigil does the rest for you.

  This is free and open source software.

• ddhx - hex editor - LinuxLinks

  ddhx is a simple multi-platform modal text UI hex editor.

  This is cross-platform software running under Linux, BSD, macOS, and Windows.

  ddhx is free and open source software.

• AliaCan - shell alias manager - LinuxLinks

  AliaCan is billed as a powerful, user-friendly shell alias manager for Linux with automatic backups, cross-shell support, and a modern Qt6 GUI.

  This is free and open source software.

• lazysql - cross-platform TUI database management tool - LinuxLinks

  lazysql is a cross-platform TUI database management tool.

  This is free and open source software.

• AyuGram - desktop Telegram client - LinuxLinks

  AyuGram is a Telegram client focusing on improving life with features that can’t be implemented in regular clients.

  This is free and open source software.

• Charta - generate colorful terminal graphs - LinuxLinks

  Charta is a utility written in Go to display small colored charts in the terminal.

  Charta supports multiple graph types and various input formats including JSON, YAML, and plain text.

  This is free and open source software.

• ASTAP - Astrometric STAcking Program - LinuxLinks

  It has a powerful FITS viewer and the native astrometric solver can be used by CCDCiel, NINA, APT, Voyager or SGP imaging programs to synchronise the mount based on an image taken.

  This is free and open source software.

• star - command line bookmark manager - LinuxLinks

  star is a (slightly over-engineered) Unix command line bookmark manager. Dynamically star your favorite folders and instantly navigate (cd) to them.

  It is written in Bash, but can be used with Zsh.

  This is free and open source software.

• Kubethor - Kubernetes management web application - LinuxLinks

  Kubethor is a Kubernetes management web application built using Go and React.

  It provides a user-friendly interface to manage and monitor Kubernetes clusters efficiently.

  This is free and open source software.

• OpenTrace - GUI wrapper for NextTrace - LinuxLinks

  OpenTrace is a cross-platform GUI wrapper for NextTrace, a visual routing tool that aims to be lightweight.

  This is free and open source software.

• TERM39 - modern terminal multiplexer - LinuxLinks

  TERM39 is a modern terminal multiplexer with classic MS-DOS aesthetic, built with Rust. Full-screen interface with window management and complete terminal emulation.

  This is free and open source software.

• NextTrace - visual route tracking CLI tool - LinuxLinks

  NextTrace is a visual routing tool that aims to be lightweight. It’s developed using Golang.

  It’s cross-platform software running under Linux, macOS, and Windows.

  This is free and open source software.

• marimo - reactive Python notebook - LinuxLinks

  marimo is a reactive Python notebook: run a cell or interact with a UI element, and marimo automatically runs dependent cells (or marks them as stale), keeping code and outputs consistent.

  marimo notebooks are stored as pure Python (with first-class SQL support), executable as scripts, and deployable as apps.

  This is free and open source software.

• 6 Useful Free and Open Source Arch Client-Side Mirror Tools - LinuxLinks

  The software featured in this article is only useful for Arch and Arch-based Linux distributions (such as CachyOS, EndeavourOS, Manjaro, Omarchy, and many others). The software typically compares the mirror databases with the local database and provides a detailed description of whether the mirror’s packages are more or less up-to-date compared to the local database.

  Here’s our verdict captured in a legendary LinuxLinks-style ratings chart. Only free and open source software is eligible for inclusion here.

• Fastrace - traceroute utility - LinuxLinks

  Fastrace is a fast traceroute utility designed for network diagnostics and performance analysis.

  It maps the route that packets take across an IP network from source to destination, providing detailed timing information and identifying potential bottlenecks or routing issues.

  This is free and open source software.

• Cfait - take control of your TODO list - LinuxLinks

  Cfait is a powerful, simple, elegant, and lightweight CalDAV task manager, written in Rust.

  It features both an efficient TUI (Terminal UI) and a modern GUI (Graphical UI) for desktop integration.

  This is free and open source software.

• Endcord - feature rich Discord TUI client - LinuxLinks

  Endcord is a third-party feature rich Discord client, running entirely in the terminal.

  It is built with Python and the ncurses library, to deliver a lightweight yet feature rich experience.

  Discord token is required in order to run Endcord.

  This is free and open source software.

• Cherry Studio - desktop client that supports multiple LLM providers - LinuxLinks

  Cherry Studio is a desktop client that supports multiple LLM providers, available on Linux, macOS, and Windows.

  This is free and open source software.