Apotris is a free multiplatform open-source block stacking game in the same genre as Tetris, featuring responsive controls and customization options. It offers 14 game modes, including Marathon, Sprint, Dig and Zen, and supports two-player battle on Game Boy Advance via Link Cable or Wireless Adapter. It was originally designed for Game Boy Advance and is also available as a GBA ROM.
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Muse is a text-to-image Transformer model that generates images from text prompts and supports image editing, including inpainting, outpainting and mask-free editing, without fine-tuning or inverting the model. It is trained on a masked modeling task in discrete token space using text embeddings from a pre-trained language model.
Music Player Daemon (MPD) is a flexible, powerful server-side application for playing music. It uses plugins and libraries to support playback of a variety of sound file formats, and can be controlled remotely via its network protocol. It is accompanied by related client tools including myMPD, ncmpc, and the libmpdclient library.
Musify is a free, open-source, ad-free music app for Android with streaming and offline listening. It has a Material You interface, supports searching songs, building playlists, reading lyrics and saving tracks for offline playback, and requires no account. It is distributed via GitHub and F-Droid.
Nagoya College of Music Repository is the institutional repository of Nagoya College of Music (名古屋音楽大学). Powered by WEKO3 with Netcommons and Maple CMS, it provides academic item search via full-text and keyword queries, advanced search filters, and functions to export or print search results. Results can be sorted by metadata such as title, registrant, item type, and publication date.
Nagoya Women's University Repository is the institutional repository of Nagoya Women's University (名古屋葵大学). Operating on WEKO3 with Netcommons and Maple CMS, it provides academic item search via full-text and keyword queries, advanced search filters, and functions to export or print search results. Results can be sorted by metadata fields including title, registrant, and publication date.
NAVDAT is a web-accessible repository for age, chemical and isotopic data from Mesozoic and younger igneous rocks in western North America, allowing a continent-wide view of magmatism patterns. The site remains functional but its content has been static since 2014 and will not be updated until further notice; data is still available via the EarthChem Portal.
nb is a command line and local web note-taking, bookmarking, archiving, and knowledge base application. It stores data as plain text, creates notes in formats such as Markdown, Org, LaTeX, and AsciiDoc, and is contained in a single portable shell script. It works in standard Linux and Unix environments, including macOS and Windows via WSL, MSYS, and Cygwin.
Neon is a serverless backend platform built on Lakebase Postgres, offering Postgres databases with branching and autoscaling alongside authentication, object storage, functions and an AI gateway. Environments can be created and branched via MCP, CLI and SDK, and services are described as instant, branchable and agent-ready.
Neuraxle is an AutoML library that supports hyperparameter tuning via pipeline abstractions to build clean deep learning production pipelines. Pipeline steps can have associated hyperparameter spaces, and the library is compatible with Scikit-Learn, TensorFlow, and most other libraries, frameworks, and MLOps environments.
NeuroElectro is a project that extracts information about the electrophysiological properties of diverse neuron types from existing literature and places it into a centralized database. It aims to support discovery of neuron-to-neuron relationships and understanding of functional diversity across neuron types. Data is offered via bulk download and a RESTful API.
Neurolink is described as the pipe layer of an AI nervous system, providing one interface connecting provider neurons to an application across three inference types: generate, stream, and a calibrated decide via TypeSafe Jev. It lists MCP-native, voice, RAG, memory and file processor features and powers several Juspay projects.
Nexusflow/NexusRaven-V2-13B is a 13-billion parameter language model available on Hugging Face. It is designed for zero-shot function calling and text generation, aiming to advance open-source artificial intelligence. The model can be used with libraries such as Transformers and provides instructions for deployment via inference providers, notebooks, and local applications.
Nginx Proxy Manager is a Docker container with a built-in web application for managing Nginx proxy hosts through an interface. It provides free SSL support via Let's Encrypt and exposes web services on a network. The project describes itself as designed with security in mind and suited to home networks.
Allows interaction with the Steam network via the Steam client protocol
NOMAD is a free and open-source service for managing, sharing and publishing materials science data. It processes uploaded files to extract structured data and metadata, supports over 60 formats, and provides search, preview and download functions. All functionality is accessible via APIs, and published data is available under a CC-BY-4.0 license. NOMAD Oasis offers local installation with access control for research groups.
NoPaste is an open-source paste service similar to Pastebin for storing code and sharing it via generated links. It works with no database and no back-end code: data is compressed and stored entirely in the shared link. Because of this design, the server hosting NoPaste cannot read or access the data, and the data cannot be deleted or censored from NoPaste.
NotebookCast is a free online collaborative whiteboard that does not require signup to start using. It supports real-time multi-user drawing, includes built-in time-unlimited audio and video calls, and provides tools such as shape drawing, sticky notes, text editing, and screen sharing. Users can create reusable whiteboard templates, access night mode, and share whiteboards via links. A free registered account allows saving whiteboards to a personal dashboard, and the tool works on any modern browser.
NoteDiscovery is a self-hosted Markdown knowledge base described as free and open source. It includes wikilinks, graph view, a drawing editor, LaTeX math, and Mermaid diagrams, along with AI assistant integration via MCP. Notes are stored as plain Markdown files in folders, and the project offers a Docker-based setup.
NoteKnight is an online flashcard and study platform for creating, organizing, and studying flashcards via a web browser. Core features including flashcard creation, active recall-focused study modes, and public set browsing are free, with free plan limits on AI tools and image uploads. Users can import Quizlet flashcards, share set links, and print sets. A paid NOBLE subscription offers ad-free access, unlimited AI tools, image uploads, and focus mode, with no dedicated mobile app available.
Nothing To Watch is an interactive movie discovery tool that lets users explore tens of thousands of films via a unique force-directed voronoi diagram interface, helping users find new titles to watch.
Not Quite Nitro is a Discord bot that lets users use emotes for free, including animated emojis. It replaces :emotes: in messages with the intended emote automatically. The bot also offers emote packs, collecting emotes from chat, quoting messages via pasted links, and embedding stickers or importing sticker packs from Telegram.
The NSF National Geophysical Facility, operated by EarthScope Consortium, provides access to geodetic data used to monitor motion of rock, ice and water at or near the Earth's surface. Data types include GNSS, synthetic aperture radar, lidar/SfM, strain and seismic borehole data, and tropospheric data; most are accessible via web services.
NSynth Super is an open source experimental instrument that lets musicians play sounds generated by the NSynth algorithm. The NSynth algorithm uses a deep neural network to learn sound characteristics and synthesize new sounds from four source sounds. The interface can be played via any MIDI source, such as a DAW, sequencer or keyboard.