January 2025 updates to the largest compilation of recommended free and open source software available for Linux.
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20 Best Free and Open Source Alternatives to the Top Utility
top is a small, venerable utility that offers a dynamic real-time view of a running system. We identify alternatives to top that offer more control in managing processes on a running system.
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Greenbone Vulnerability Manager – central management service
The Greenbone Vulnerability Manager is the central management service between security scanners and the user clients.
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PGPTool – encrypt and decrypt files
PGPTool is a Java-based desktop GUI application for easy and regular PGP decryption/encryption.
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Eye of MATE – simple graphics viewer for the MATE Desktop Environment
Eye of MATE (or eom) is the official image viewer for the MATE Desktop Environment.
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Scrumlens – agile retrospective tool
Scrumlens is an agile retrospective tool. Real-time, and designed to make your team’s voice heard loud and clear.
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Best Free and Open Source Alternatives to Microsoft Windows Media Player
Windows Media Player is a video and audio player. We recommend the best free and open source alternatives for Linux.
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Chroma – general purpose syntax highlighter
Chroma takes source code and other structured text and converts it into syntax highlighted HTML, ANSI-coloured text, and more.
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Gum – tool for glamorous shell scripts
Gum lets you leverage the power of Bubbles and Lip Gloss in your scripts and aliases without writing any Go code.
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EasyOS – experimental Linux distribution
EasyOS is an experimental Linux distribution made in Australia. While using Easy, everything happens in RAM.
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QIV – Quick Image Viewer
Quick Image Viewer (QIV) is a very small and pretty fast open source gdk/imlib image viewer.
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Minisign – sign files and verify signatures
Minisign is a very simple tool to sign files and verify digital signatures.
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17 Best Free and Open Source GUI Matrix Clients
Matrix is an open standard for interoperable, decentralised, real-time communication over IP. Here’s our recommended free and open source GUI Matrix clients.
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Mirage – fast and simple GTK+ image viewer
Mirage is a fast and simple GTK+ image viewer which only depends on PyGTK.
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Best Free and Open Source Alternatives to Apple Universal Control
Universal Control is software which lets you use the keyboard and mouse to control up to two other nearby Mac or iPad devices.
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Drawing – simple image editor
Drawing is a basic raster image editor is similar to Microsoft Paint, but aiming at the GNOME desktop.
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