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A browser-based web port of Marble Blast Ultra written in Haxe. The port reproduces the original's physics and graphics and includes leaderboards, multiplayer, a replay system and community custom levels.
Marquez is an open source metadata service for collecting, aggregating and visualizing a data ecosystem's metadata. It maintains provenance of how datasets are consumed and produced and provides visibility into job runtime and dataset access. Metadata is collected via OpenLineage, and a web UI shows job and dataset dependencies through a lineage graph.
Material Maker is a procedural materials authoring tool based on the Godot Engine, with an experimental 3D model painting engine. Materials and brushes are defined as node graphs, and most nodes are GLSL shaders. Materials can be exported for the Godot, Unity and Unreal game engines. It is available for Windows, macOS and Linux, and the source code is on GitHub.
Material UI is a design resource for UI work, graphics, templates, inspiration, or visual archives.
Math Notepad is a web-based mathematical editor for performing calculations and plotting graphs. It supports real and complex numbers, matrices, and units. The tool automatically updates dependent calculations when expressions are changed, and is designed for engineers, students, and pupils. It is powered by the math.js library and is the successor of SpeQ Mathematics.
Mathigon is a mathematics learning site described as a mathematical playground. It offers free tools, courses and manipulatives intended to make online learning more interactive, including Polypad, fractals, flash cards, timeline, sequences, graph theory and Factris. It also lists lesson plans and teacher resources.
Mathway is an AI-powered math solver and calculator backed by Chegg. It provides step-by-step solutions to problems across 11 math and science subjects, including algebra, calculus, statistics, chemistry, and physics. Users can input problems by typing, uploading a photo of handwritten or printed work, or using over 59 dedicated free calculators for tasks like solving equations, factoring, and graphing. The service has been refined for over two decades and has solved more than 5 billion problems.
Matplotlib is a comprehensive Python library for creating static, animated, and interactive visualizations. It supports publication quality plots, interactive figures that zoom, pan and update, customizable visual styles and layouts, and exporting to many file formats. It can be embedded in JupyterLab and graphical user interfaces, and third-party packages extend and build on its functionality.
MCP Memory Service is an open-source tool that provides persistent memory for AI agent pipelines including LangGraph, CrewAI, AutoGen and Claude, with a REST API, knowledge graph and autonomous consolidation functionality.
Meaning of is the personal blog of Kenny Bastani, covering open source software, graph databases, cloud native architectures, information theory, artificial intelligence, and machine learning. As of September 18, 2025, the blog is no longer maintained, with readers directed to the author's GitHub or LinkedIn profiles.
MediaInfo is a tool that displays technical and tag data for video and audio files. It shows container, video, audio, text and chapter details, and supports formats including MPEG-4, Matroska, AVI, H.264 and MP3. It is available with a graphical interface, command line interface or library version, and is open-source software.
The Newfa Stuff meme generator captions popular meme templates or uploaded images. It supports multiple meme formats, including a black twitter format, and a library of popular templates is available. A mobile-friendly version is offered if the generator does not load.
MemeBetter is a browser-based meme generator that renders memes online without requiring installation. It offers HD templates and allows users to use their own images, which are loaded and rendered privately by the browser. The site is free, requires no sign-ups, and does not watermark memes.
MeTA is a modern C++ data sciences toolkit. It provides text tokenization including deep semantic features like parse trees, inverted and forward indexes with compression and caching strategies, ranking functions for searching indexes, topic models, classification algorithms, graph algorithms, language models, a CRF implementation for POS-tagging and shallow parsing, and wrappers for liblinear and libsvm.
A browser-based tool that generates HTML meta tags for single-page apps, using Open Graph and Twitter web standards. It also produces social media posts and stores the last generated form in localStorage. Inputs cover title, description, keywords, URL, image URL, author and Twitter username.
MFGG, also called Mario Fan Games Galaxy, is a community site with forums, a wiki, and sections for games, hacks, sprites, tutorials, and sounds. Updates describe available site and forum skins, a BPS patcher, and lists of recently added games, graphics, and reviews.
microMathematics Plus is an open-source Android scientific graphing calculator and function plotter oriented around worksheets. It enables users to perform mathematical calculations in naturally readable form, create interactive formula collections, edit mathematical identities live with high accuracy, and store documents containing formulas, plots, text and images. The app includes no ads, trackers or telemetry, supports common mathematical operations and SI and non-SI units, and works on smartphones and tablets in portrait and landscape modes.
Microsoft Agent Framework is a framework for building AI agents and multi-agent workflows in .NET, Python, and Go. It provides agents that use LLMs to process inputs, call tools and MCP servers, and generate responses, plus functional and graph-based workflows that connect agents and functions through explicit execution paths. It includes model clients, agent sessions, context providers, middleware, and MCP clients.
MilkyTracker is an open source, multi-platform music application for creating .MOD and .XM module files. It recreates the module replay and user experience of the DOS program Fasttracker II, with special playback modes for Amiga ProTracker 2/3 compatibility. It offers a custom graphical user interface, tabbed editing of up to 32 modules, over 30 imported module formats, and rendering songs or patterns to disk as .WAV.
Milton is a free and open-source infinite canvas paint program for Windows, macOS and Linux. It works with vectors while feeling raster-based and saves changes automatically without a save button. Features include layers, blur, lines, unlimited undo and redo, and export to JPEG or PNG at any supported resolution.
Mimi Panda is a service for converting images into coloring pages and paint by numbers, using graphic techniques and algorithms developed by its team. It offers free coloring pages and a paint by numbers converter, an API service for enterprise clients, and a subscription-based Mimi Profile service with higher quality and a personal account.
Mindfulness at the Computer is a mindfulness application for people who spend many hours in front of a computer. It helps users remember to be mindful of their breathing and body while sitting at the computer, and to concentrate on inhaling and exhaling during a breathing pause. Features include notifications, interactive graphics and text-guided breathing.
Minecraft Chibi Skin Maker converts a Minecraft skin into a chibi 2D pixel-art illustration. Users paste a Java username or upload a skin PNG and choose between Classic and Minecraft Live styles. It exports transparent standing images or animated GIFs for use as avatars, icons, Twitch emotes, or thumbnails, and runs locally in the browser without an account.