Left on Read is a macOS desktop app that provides analytics and productivity tools for text messages, including revisiting messages, group chats and words of the year. It can schedule messages, send response reminders and manage an inbox. Texts are analyzed locally, and the software is open-source and runs offline. It is free to try.
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Libraries.io is a free service that collects publicly available open source package information scraped from the internet. Users can search packages by license or language and explore new, trending or popular packages. The data is not validated, corrected or curated for accuracy. API access is free to registered users, subject to a rate limit.
Lively is a free, open-source animated desktop wallpaper and screensaver software for Windows. It supports custom animated wallpapers, automatically pauses when fullscreen applications or games are running, and works with ultrawide and multi-monitor setups. It includes tools for creating music visualizers and widgets, and has a modern Windows 11-style user interface.
Localforge is a free, open-source desktop GUI for Codex AI, Claude and other LLMs. It runs locally and lets autonomous agent loops edit files, run tests and work on large multi-file codebase tasks. It supports swapping providers and storing prompt templates, and is distributed under the MIT license.
Looking Glass is open-source software for responsive, low-latency display and input, released under the GPL 2.0 licence. It brings a Windows desktop into a Linux window and is used with a KVM VGA PCI pass-through configuration without an attached physical monitor, keyboard or mouse.
LXer is an online platform focused on GNU/Linux and Free/Open Source Software news and community content. It publishes news stories, feature articles, and hosts discussion forums for the Linux community. The site accepts user-submitted content including ideas, reviews, and commentary for publication, and reports approximately 350,000 monthly readers.
Manalyzer is a free, open-source, multi-platform service that performs static analysis on PE executables to detect undesirable behavior. It can be used online, and its underlying software is available on GitHub. Manalyze plugins run in separate threads.
A reference page listing manga sites with known APIs. It records each site's type, whether the API is at the root or a single endpoint, documentation and source availability, and whether the project is open, along with the data format. Entries cover aggregators, publishers, scanlator groups, and other manga-related sites.
Manuskript is an open-source writing tool for writers. It offers an outliner for organizing thoughts hierarchically, a distraction-free mode with word-count or time goals, and a novel assistant that uses the snowflake method. It includes tools for characters, plots and world-building. The page states the software is still in development and in need of extensive testing.
massCode is a free and open-source developer workspace for code snippets, Markdown notes, HTTP requests, calculations, and quick developer utilities. It is a local-first desktop app organized into Spaces, with a built-in AI assistant that connects to a user's own AI provider or a local model.
MCreator is open source software for making Minecraft Java Edition mods, Bedrock Edition Add-Ons, resource packs and data packs, using an interface designed to be easy to learn or an integrated code editor. The site states it is used by Minecraft players, mod developers, for education and by STEM workshops, and lists a full 2026.2 release supporting Minecraft 26.1.
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.
Meilisearch is a search engine that indexes content and exposes it through search, conversational interfaces and APIs. It supports full-text search, semantic search and hybrid search, and can be used on the managed Meilisearch Cloud or self-hosted as an open source engine. Official SDKs are available for several programming languages and frameworks.
Memos is an open-source, self-hosted note-taking app that provides a timeline for quick notes written in Markdown. New memos are private by default, and visibility can be limited to the author, invited people, or anyone with the link. The software is MIT licensed, sends no telemetry, and can be deployed with Docker.
Metaflop is a web application for modulating fonts, using Metafont. The Modulator adjusts font parameters with sliders or numeric values, and results can be downloaded as a webfont package or OpenType PostScript font. Metaflop is free and open source software.
Million describes itself as a research lab specializing in frontend coding data that builds open-source developer tools, datasets, and reinforcement learning environments for people and frontier coding agents. It builds environments and evals in which agents ship features, deploy applications, and debug issues, including React Bench.
mitmproxy is a free and open source interactive HTTPS proxy. It can be used to intercept, inspect, modify and replay web traffic, including HTTP/1, HTTP/2, HTTP/3, WebSockets and other SSL/TLS-protected protocols. It offers a command line interface, a graphical web interface, and a Python API for writing addons and scripts. Downloads are available for Windows, Linux, macOS and Docker.
Mitosis is an open-source tool that transforms JSX components into functional components for frameworks such as Angular, React, Qwik, Vue, Svelte, Solid, and React Native. Writing UI components once in JSX allows them to be deployed across platforms without rewriting code for each framework. It also integrates with Figma to sync design systems to code and can generate Lit, Stencil, and raw web components.
Mixxx is free, open-source DJ software for performing live mixes with digital music files. It provides four decks, BPM and musical key detection, Sync Lock, hotcues, beat looping, effects chains and multiple equalizers. It includes built-in mappings for DJ controller hardware, a programmable mapping system for MIDI or HID devices, and support for lossless and lossy audio formats.
An open standard for connecting AI models to external tools and data sources. MCP Registry opensource.
Money Manager EX is free, open-source, cross-platform personal finance software for organizing finances, tracking where money goes and viewing financial worth. Features include accounts and multiple currencies, transactions, payees and categories, scheduled transactions, stocks and shares, assets, budgeting and attachments. It is available for Windows, macOS, Linux, Android and iOS.
MoonRay is a production MCRT renderer and open source project originally developed at DreamWorks Animation, now under the Academy Software Foundation. It has been used on feature films and includes physically based materials, a USD Hydra render delegate, and multi-machine and cloud rendering via the Arras distributed computation framework.
Navidrome is open source software distributed free of charge under the GNU GPL v3 license. It serves a personal music collection through a modern web UI and third-party compatible mobile apps for iOS and Android, allowing access from anywhere. It supports multiple libraries with user-specific access controls and the OpenSubsonic API.