Best Free and Open Source Software

posted by Rianne Schestowitz on Aug 31, 2025

• Super-linter - collection of linters and code analyzers - LinuxLinks

  The goal of super-linter is to help you establish best practices and consistent formatting across multiple programming languages, and ensure developers are adhering to those conventions.

  Super-linter analyzes source code files using several tools, and reports the issues that those tools find as console output, and as GitHub Actions status checks. You can also run super-linter outside GitHub Actions.

  Super-linter can also help you fix linting and formatting issues.

  This is free and open source software.

• Hoodik - cloud storage solution - LinuxLinks

  It’s designed and built with Rust and Vue, focusing on end-to-end encryption that shields your data from prying eyes and hackers. Hoodik supports file uploading and downloading, making it easy for you to share files with other users.

  Hoodik supports either Sqlite or Postgres databases. Sqlite is enabled by default and it creates a database file in your DATA_DIR right out of the box.

  This is free software but its license doesn’t meet the OSI definition to be classed as open source.

• Quadrapassel - falling-block game - LinuxLinks

  If you’re looking for a challenge, Quadrapassel allows you to increase the initial speed of the blocks, or begin the game with partial blocks on some of the rows. Or, instead of allowing the blocks to fall randomly, it can select blocks that will be hard for you to place.

  This is free and open source software.

• gofumpt - stricter gofmt - LinuxLinks

  Enforce a stricter format than gofmt, while being backwards compatible. That is, gofumpt is happy with a subset of the formats that gofmt is happy with.

  The tool is a fork of gofmt as of Go 1.24.0, and requires Go 1.23 or later. It can be used as a drop-in replacement to format your Go code, and running gofmt after gofumpt should produce no changes.

  This is free and open source software.

• Cloudreve - self-hosted file management system with multi-cloud support - LinuxLinks

  Cloudreve is a self-hosted file management and sharing system which supports multiple storage providers.

  This is free and open source software.

• Common Email Security Mistakes and How to Avoid Them - LinuxLinks

  When it comes to business communication, email still sits right at the top. It’s quick, it’s easy, and it feels reliable. But here’s the catch: that same convenience also makes it one of the most targeted tools for hackers.

  So, let’s talk through some of the most common mistakes people make with email security and how to avoid falling into the same traps.

• harsh - habit tracking for geeks - LinuxLinks

  Designed for simplicity, visibility, and longevity, harsh uses simple text files for tracking that are human-grokable and editable in your favourite text editor. It’s simpler, less messy, and more portable than commercial or mobile applications and less fussy to manage than emacs habit tracking (imho). While quantified individual tracking is exhaustive (and exhausting), important habits get lost in the data deluge, so this provides deliberate and explicit habits to track and progress.

  This is free and open source software.

• Color Palette - look up GNOME colors - LinuxLinks

  Color Palette is a tool for viewing the GNOME color palette as defined by the design guidelines.

  This is free and open source software.

• Benchmarking the Aiffro K100 All-SSD NAS - LinuxLinks

  The Aiffro K100 is an All-SSD NAS with an Intel N100 processor, 8GB of RAM, and 4 M.2 2280 NVMe slots. The machine retails for £226. You buy the SSDs separately, and choose whatever operating system you want to install.

  In this article I benchmark the Aiffro K100 and compare it to a variety of single board computers (both ARM and RISC-V). The tests are run using the Phoronix Test Suite unless stated otherwise.

• KLog - ham radio logger - LinuxLinks

  KLog provides general purpose ham radio DX logging support.

  This is cross-platform software which runs under Linux, macOS, and Windows.

  KLog is free and open source software.

• remarklint - check Markdown code style - LinuxLinks

  remark is an ecosystem of plugins that work with markdown as structured data, specifically ASTs (abstract syntax trees). ASTs make it easy for programs to deal with markdown. We call those programs plugins. Plugins inspect and change trees. You can use the many existing plugins or you can make your own.

  This project is useful when developers or technical writers are authoring documentation in markdown and you want to ensure that the markdown is consistent, free of bugs, and works well across different markdown parsers.

  This is free and open source software.

• 15 Best Free and Open Source Linux Ham Radio Tools - LinuxLinks

  It’s fun, social, educational, and can be a lifeline during times of need.

  This roundup looks at the finest ham radio tools available for Linux. We include a good variety of tools including transceiver control programs, ham radio loggers, and more.

  Here’s our verdict on the best free ham radio tools for Linux. Only free and open source software is eligible for inclusion.

• MegaLinter - analyzes the consistency of your code - LinuxLinks

  Supporting 65 languages, 22 formats, 20 tooling formats and ready to use out of the box, as a GitHub action or any CI system, highly configurable and free for all uses.

  MegaLinter has native integrations with many of the major CI/CD tools of the market.

  This is free and open source software.

• lyrus - cmus lyric player - LinuxLinks

  lyrus is a fully fledged cmus, mpd lyric player automatic lyrics fetcher.

  It also supports local lyrics player, txt and lrc scrolling together with a wide range of lyric sources, ncurses support, and scrollable.

  This is free and open source software.

• DuckRun - chrome dino game clone - LinuxLinks

  DuckRun is a little game about a duck who loves to hop and wants to collect some coins. It’s made with the Godot game engine.

  Just buy a hat or some shoes in the shop, but first you have to collect coins.

  This is free and open source software.

• Fedinspect - analyse Fediverse servers - LinuxLinks

  Fedinspect is an application for analysing Fediverse servers and user accounts. It’s a GNOME application to enable developers to inspect and analyse fediverse server configurations.

  It provides detailed information about server configurations, capabilities, and user profiles using standard protocols like NodeInfo, WebFinger, and ActivityPub.

  This is free and open source software.

• Diurnals - get daily Todoist notifications - LinuxLinks

  Diurnals lets you receive a daily popup to notify about upcoming Todoist tasks.

  It’s simple and easy to configure.

  This is free and open source software.

• ownCloud - content collaboration, file-sharing, and file-syncing - LinuxLinks

  ownCloud is a software system that offers file hosting services like OneDrive, Dropbox and Google Drive, but unlike them, OwnCloud is free and open-source software. ownCloud supports different formats, including Open Document and PDF. It offers different usability features, including shared document editing, anti-virus protection, desktop and mobile applications.

  Users can install OwnCloud within a private server at no cost and without limiting the amount of storage or the number of clients connected, except for hard disk fit.

• 7 Best Free and Open Source Zsh Configuration Frameworks - LinuxLinks

  We highly recommend installing a framework with Zsh as it makes dealing with configuration, plugins and themes a lot more straightforward. Frameworks are essentially collections of plugins and themes, which you can enable very easily, without needing to manually configure and make everything work together.

  This article recommends our favorite Zsh configuration frameworks. We’ve captured our verdict in a LinuxLinks-style rating chart.