RustDiff is a GTK4 semantic diff tool for JSON, XML and SQL with side-by-side editors, search, graph view, history and export.
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Author: Steve Emms
UBIFS – file system for raw flash memory used through UBI volumes
UBIFS is the Linux kernel’s file system for raw flash memory used through UBI volumes.
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Melodic Mix – Mixer and Digital Signal Processing Application
Melodic Mix is a Linux mixer and DSP application for live audio, with configurable effects chains, filtering, dynamics and metering.
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Visu – visualize algorithms step by step
Visu is an interactive algorithm visualizer for GNOME desktops.
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OCFS2 – extent-based cluster file system
OCFS2 is an extent-based cluster file system included in the Linux kernel.
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Carla – Modular Audio Plugin Host
Carla is a modular audio plugin host for Linux supporting multiple plugin formats, rack processing, patchbays, MIDI, JACK and ALSA.
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Easy NATS – graphical desktop application for managing NATS messaging
Easy NATS is a graphical desktop application for managing NATS messaging in a single workspace.
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Best Free and Open Source Software: April 2026 Updates
April 2026 updates to the largest compilation of recommended free and open source software available for Linux.
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ROS 2 – software framework for building robot applications
ROS 2 is a software framework for building robot applications, offering libraries, tools, and core infrastructure.
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Merkaartor – OpenStreetMap mapping program
Merkaartor is a native desktop editor for OpenStreetMap written in C++ and Qt.
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SkyMPC – simple MPD client
SkyMPC is a Qt-based client for MPD (Music Player Daemon) with a deliberately simple design.
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14 Best Free and Open Source Unified Modeling Language Tools
Unified Modeling Language (UML) is a general-purpose, modeling language designed to provide a standard way for visualizing, specifying, constructing, and documenting the artifacts of distributed object systems.
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Ohcount – source code line counter and analysis library
Ohcount is a source code line counter and analysis library originally developed for Ohloh and used to generate code statistics reports.
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Pipeweaver – PipeWire Audio Management and Routing
Pipeweaver is a PipeWire audio management tool for building virtual channels, routing signals, mixing sources, and external control.
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uMap – web application for creating and publishing custom interactive maps
uMap is a web application for creating and publishing custom interactive maps based on OpenStreetMap layers.
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dwarview – graphical utility for inspecting DWARF debugging information
dwarview is a graphical utility for inspecting DWARF debugging information stored in executable files and other objects.
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Pure Maps – native map and navigation application for Linux
Pure Maps is a native map and navigation application for Linux that’s aimed particularly at mobile Linux platforms.
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Pulsemeeter – Linux Audio Routing and Mixer
Pulsemeeter is a Linux audio routing and mixer application for creating virtual devices and directing audio between inputs and outputs.
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lldap – lightweight LDAP authentication server
lldap is a lightweight LDAP authentication server with a web interface, GraphQL API, multiple databases and simple self-hosted user management.
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18 Best Free and Open Source Terminal-Based Internet Radio Apps
This article recommends our favourite terminal-based internet radio apps. Free and open source software only.
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