CATMA (Computer Assisted Text Markup and Analysis) is a free, browser-based tool for annotating, analyzing, interpreting and visualizing text. It supports collaborative project work, custom tagset creation, and offers TEI-XML export, Git access, a GitMA Python package, and a JSON API for data access. Users can generate interactive visualizations including word clouds and distribution graphs.
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ChatBotKit is a managed platform for building and running AI agents, described as usable from ready-made solutions without code. Agents can run on schedules and triggers, connect to tools, and operate across channels such as Slack, WhatsApp, web widgets and Zendesk. It also offers a Python SDK, integrations and product documentation.
CheckiO is a website with coding games and programming challenges for beginner and advanced programmers. Users improve their coding skills by solving challenges and exercises in Python and TypeScript, and can exchange experience with other users through coding activities. Teachers use it as an extra tool so students can practice skills while learning new material.
CodSpeed provides continuous performance testing for CI. It runs benchmarks in the CI pipeline, reports regressions in pull requests, and offers autonomous performance optimization. A documentation quickstart describes connecting a repository and setting up benchmarks, either through an automated wizard or manual configuration, including plugins for languages such as Python and C++.
CP Editor is an IDE for competitive programmers that automates compilation, execution and testing. It fetches sample test cases from competitive programming platforms and can submit solutions to Codeforces, with support for C/C++, Java and Python.
Converter is a utility that converts curl commands into code for languages and libraries such as Python, JavaScript and more. Conversion happens entirely in the browser, and the site states it does not transmit or record entered curl commands.
CudaText is a cross-platform text editor written in Object Pascal. It is an open source project that can be used free of charge, including for business. It offers syntax highlighting for over 300 lexers, code tree, code folding, multi-carets, regular expression find and replace, tabbed UI, and split views, and is extensible through Python add-ons.
Cutter is a free and open-source reverse-engineering platform powered by Rizin, using Rizin as its core engine. It is built with Qt and C++ and provides access to Rizin features through a GUI or an integrated terminal. Its releases integrate the native Ghidra decompiler, and it includes a graph view, debugger (beta), hex editor, Python scripting engine and plugins.
Data School is a blog about data science and machine learning. Its posts cover topics such as the difference between AI and machine learning, learning scikit-learn, AI progress, and using pandas for calculations. Posts are tagged by subject including Python, AI, and machine learning.
The Debian Wiki is a support and documentation resource for the Debian project. It is editable by everyone and offers pages including FindPage, WordIndex, TitleIndex and RecentChanges, with contact information available for the people running the wiki. The site is powered by MoinMoin and Python, with hosting provided by Metropolitan Area Network Darmstadt.
An online decompiler that accepts uploaded artifacts and converts them back to source code or extracted resources. It supports Java class and archive files, Python bytecode, .NET assemblies, Android packages and Flash files, among other formats.
dupeGuru is a cross-platform GUI tool for finding duplicate files in a system, written mostly in Python 3. It can scan filenames or contents, and includes Standard, Music and Picture modes with their own scan types. Filename scans use a fuzzy matching algorithm that finds similar filenames, not only identical ones.
Flowgorithm is a free beginner's programming language based on graphical flowcharts. Programs can be executed in Flowgorithm, which can interactively convert flowcharts to over 18 languages including C#, C++, Java, JavaScript, Python and Swift. It features a graphical variable watch window, loops, arrays and multilingual support.
A web hosting provider offering free web hosting along with paid shared, semi-dedicated and VPS hosting plans. The shared hosting supports multiple domains and scripting languages including PHP, Perl, CGI, Python and Ruby, and the service includes domain registration, transfers and SSL certificates.
A free, continuously evolving downloadable book collecting community knowledge on 2D game development. It does not teach a specific tool, instead offering tips and tricks applied to any engine or built from scratch. Editions are available in pseudocode, Python, C++, JavaScript, Lua and Rust; some versions require thorough revision.
Gajim is a free, fully featured chat app for XMPP, developed by volunteers as open source software using Python and GTK. It supports end-to-end encryption and syncs chats across devices with a provider of the user's choice. It is interoperable with other chat apps and runs on Windows, macOS, and Linux.
gallery-dl is a command-line program that downloads image galleries and collections from several image hosting sites. It is cross-platform and offers command-line and configuration options plus file-naming capabilities. It requires Python 3.8+ and Requests, with optional dependencies for video downloads and conversions.
Glances is a cross-platform, curses-based system monitoring tool written in Python. It reports on CPU, memory, load, process list, network interfaces, disk I/O, sensors, filesystems and containers, and includes a web interface, an XML-RPC server and a RESTful JSON API. It can export statistics to formats and services including CSV, InfluxDB and ElasticSearch.
GLORP is a downloadable utility for Windows written in Python and PySide6 that converts pixel art into SVG vector files. It offers Monolith optimized paths, a Lego mode generating one rectangle per pixel, WebP export, batch folder import and drag-and-drop previews. It requires real pixel art with hard edges; upscaled images, JPEG files and blur or gradients produce broken output.
Google Agent Development Kit (ADK) is an open toolkit for building powerful multi-agent systems and production-grade agents. It supports multiple programming languages including Python, JavaScript, Go, Java, and Kotlin, and offers features such as graph workflows, multi-agent collaboration, and integration with various AI models including Gemini, Claude, and OpenAI.
gPodder is a simple, open source podcast client and media aggregator, in development since 2005. It is written in Python and runs from a Git checkout without root, compiling, or system-wide installation. Version 3.11.5 was released 2024-12-17, with downloads for Windows, macOS, Linux/BSD and others.
WorldWide Telescope is a suite of free and open source software and data sets that combine to create scientific visualizations and stories. Its ecosystem includes a Windows application, an interactive web app, and toolkits for Python and TypeScript/JavaScript.
HydraPaper is a wallpaper management application. It manages wallpaper collections with folders that can be enabled or disabled, and marks favorites for quick access. Wallpapers can be set as zoomed, centered or fitted, with a black or blurred background, and random wallpapers can be set quickly. It is written in Python 3 and GTK and released under the GPL3 license.
Instaloader is a free open source command line tool written in Python that downloads pictures, videos, captions and other metadata from Instagram. It downloads public and private profiles, hashtags, stories, feeds and saved media, and automatically resumes interrupted download iterations. The documentation states it is not affiliated with or endorsed by Instagram.