Here’s our verdict on the best console-based XMPP clients. They are free and open source goodness.
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Author: Steve Emms
MuonFP – enterprise-ready passive TCP fingerprinter
MuonFP identifies and classifies network traffic from TCP packet characteristics.
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Metabrowse – static site generator for code search
Metabrowse is a static site generator for code search with IDE features for Scala. It uses the Scalameta Semantic API.
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ktfmt-gradle – Gradle plugin that applies the ktfmt formatter to Kotlin projects
ktfmt-gradle is a Gradle plugin that applies ktfmt formatting to Kotlin projects. Free and open source software.
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sxwm – dynamic tiling window manager for X11
sxwm is a simple, feature-rich dynamic tiling window manager for X11.
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Leetha – passive network fingerprinting and analysis engine
Leetha is a passive network fingerprinting and analysis engine.
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15 Best Free and Open Source Linux Compilers
Linux has a diverse range of other compilers available, many of which are released under freely distributable licenses. Here are the finest.
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workflowr – R package
workflowr is an R package that helps researchers organize analysis projects as reproducible research websites.
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10 Best Free and Open Source Linux Parallel Lossless Compression Tools
This roundup focuses on lossless compression tools which use multiple cores. Only free and open source software is included here.
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quickblog – lightweight static blog engine
quickblog is a lightweight static blog engine for Clojure and babashka.
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Fluux Messenger – modern, cross-platform XMPP client
Fluux Messenger is a modern, cross-platform XMPP client for communities and organizations.
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Kanzi – modern lossless data compressor
Kanzi is a modern, modular, portable, and efficient lossless data compressor.
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Soia – modern media player built on mpv
Soia is a modern media player built on mpv. It provides a clean interface for watching local media and streaming from network sources.
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Best Free and Open Source Software: June 2026 Updates
June 2026 updates to the largest compilation of recommended free and open source software available for Linux.
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DarkMoon – AI-powered autonomous penetration testing platform
DarkMoon is an AI-powered autonomous penetration testing platform.
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11 Best Free and Open Source Music Trackers
A music tracker (short version tracker) is a type of music sequencer software for creating music. We recommend the best free and open source trackers.
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Powerpack – batteries-included Clojure toolkit for building static websites
Powerpack combines Stasis with a collection of supporting tools, providing the wiring for content ingestion, development serving.
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Botspot Screen Recorder – all-in-one screen recording utility
Botspot Screen Recorder is an all-in-one screen recording utility for wlroots-based Wayland compositors such as LabWC, Wayfire, and Sway.
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8 Best Free and Open Source XMPP Servers
XMPP (also known as Jabber) is an open and free alternative to commercial messaging and chat providers. We select the best servers.
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Kotlin Formatter – tool for formatting Kotlin source code
This is built around ktfmt and provides a unified formatting workflow across the command line, Git hooks, Gradle, and IntelliJ IDEA.
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