Open Source Tool

Optipng.sourceforge.net

Shrink PNG images without losing quality

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OptiPNG is a free tool for optimizing PNG images, helping you reduce file size without losing quality. Learn about PNG optimization and similar tools.

Ruffle.rs

Play Flash content on any device or browser

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Ruffle lets you play old Flash content on modern browsers and devices, bringing classic games and animations back without extra plugins or setup.

Appium.io

Automate mobile app testing across platforms

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Appium lets you automate testing for mobile apps across platforms. Easily run tests on Android and iOS apps with this open-source tool.

Fftw.org

Get a free, fast C FFT library for your projects

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Download FFTW, a free C library for fast Fourier transforms, with support for real/complex, multidimensional, and parallel signal processing.

Fontforge.org

Create and edit custom fonts for free

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FontForge is a free, open-source app for creating and editing fonts. Design, modify, and convert fonts for personal or professional projects.

Mdanalysis.org

Analyze molecular simulations with open-source tools

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MDAnalysis offers open-source tools for analyzing molecular simulation data, helping researchers explore molecular structures and dynamics easily.

Phpstan.org

Find PHP bugs instantly—no tests needed

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PHPStan helps you spot bugs in your PHP code without needing to write tests. It’s a free, open-source tool for improving code quality and reliability.

Sqlitebrowser.org

Visually manage SQLite databases with ease

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Easily create, search, and edit SQLite database files with a visual, open source tool for Windows, macOS, and Linux. No coding required.

Flex.sourceforge.net

Generate lexical analyzers from your code

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Flex is an open-source tool for generating fast lexical analyzers, helping developers create programs that recognize patterns in text efficiently.

Retirejs.github.io

Detect insecure JavaScript libraries instantly

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Scan your JavaScript projects for insecure libraries and vulnerabilities with this easy-to-use security tool. Keep your code safe and up to date.

Re2c.org

Generate fast lexers from regex for any language

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re2c is a free, open-source tool that turns regular expressions into fast, embeddable lexers for many programming languages, including C, Python, and Rust.

Tsduck.io

Manipulate MPEG transport streams with powerful tools

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TSDuck offers an open-source toolkit and SDK for manipulating MPEG transport streams, with tools, plugins, and documentation for developers and engineers.

Upx.github.io

Compress executables to save space and boost speed

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UPX is a free, high-performance tool that compresses executable files to save space and speed up loading, supporting several formats across platforms.

Merkaartor.be

Edit and create maps with OpenStreetMap data

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Merkaartor is a map editor tool that lets you create and edit maps using OpenStreetMap data. Download the latest version or find documentation online.

Mxe.cc

Easily set up cross-compiling for multiple platforms

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MXE is a GNU Makefile-based tool that helps you set up a cross-compiling environment for building software and libraries for multiple platforms.

Testssl.sh

Scan your server's SSL/TLS security for free

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Testssl.sh is an open-source tool for checking the security of TLS/SSL encryption on your servers, helping you find vulnerabilities and configuration issues.

Barcode4j.sourceforge.net

Generate barcodes easily with Java

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Barcode4J is a free Java-based tool for generating barcodes in various formats, making it easy for developers to add barcode support to their projects.

Mujoco.org

Simulate robotics and physics with open-source tools

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MuJoCo is a free, open-source physics engine for fast and accurate simulation in robotics, biomechanics, graphics, animation, and research projects.

Sipp.sourceforge.net

Simulate and test SIP calls for VoIP systems

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SIPp is a free, open source tool for testing and generating SIP protocol traffic, helping users simulate and analyze VoIP call scenarios with custom scripts.

Graphviz.gitlab.io

Generate diagrams from your data easily

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Graphviz lets you create and visualize complex graphs and networks as diagrams. Open source tool for visualizing structural relationships in data.