Monocles mail is a secure and open source e-mail client for Android, described as a fork of K-9 mail that keeps the known functions of K-9 mail with some UI updates. It supports multiple accounts, a unified inbox, local and server-side search, and OpenPGP email encryption. The source states it is privacy-friendly, with no tracking and only connecting to the user's email provider.
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Moon+ Reader is an Android ebook reader with free and Pro versions. It reads local books and supports multiple online book sites, with real-time smooth scroll. Supported formats include txt, html, epub, pdf, mobi, azw/azw3, fb2 and others. It offers visual options, embedded themes, paging options and auto-scroll modes. Reading positions, bookmarks and notes can sync via DropBox or WebDav.
Mopidy is an extensible music server written in Python. It plays music from local disk, Spotify, SoundCloud and Internet radio, and runs in a terminal or background on Linux computers and Macs. Out of the box it is an HTTP server; with the Mopidy-MPD extension it also becomes an MPD server. Users control playback from phones, tablets or computers with MPD or web clients.
Local authority-operated open data portal.
MouseTester.io is a browser-based tool for testing mouse buttons, wheel, polling rate and double-click behavior. It uses browser pointer events to report click response and polling rate data without drivers or downloads, and runs tests locally in the browser.
Multi-Agent Land is a Hugging Face Space developed by build-small-hackathon. It launches the Fishbowl Gradio web interface, loads configuration from a local .env file, operates entirely offline without requiring API keys, and automatically configures relevant settings. The space is currently paused.
Musicolet is an offline music player for Android that organizes and plays local audio files stored on the device. The app lacks Internet permission and therefore cannot connect to the Internet or any network. It offers multiple queues, an equalizer, synchronized lyrics, widgets, folder browsing, playlists and tag editing, and works with Android Auto.
A tutorial website offering MySQL lessons covering basics, stored procedures, triggers, views and indexes, plus programming interfaces for PHP, Java, Python, Node.js and Perl. It includes a getting-started section intended to leave a local MySQL database with a sample database for practice.
Mzelo is a web-based watch party platform for watching movies, YouTube videos, and anime together in synced rooms. It offers chat, voice, and video hangouts alongside tools such as a virtual browser, YouTube sync, screen sharing, local media playback, and a web player.
Narromine News is a weekly newspaper serving Narromine, New South Wales, and surrounding towns. It reports local news, sport and weather, with coverage of issues outside the area that affect residents. The publication also offers digital subscriptions and newsletters.
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.
NC OneMap is a strategic geographic data resource serving the state of North Carolina, offering a collection of authoritative geospatial data and web services. It is a collaborative effort involving local, state, and federal government agencies, private sector organizations, and academic institutions. Users can search or browse available data, use it in their own applications, analyze it with external tools, or build applications using the platform’s APIs.
NetBalancer is a Windows application for local network traffic control and monitoring. It allows setting download and upload priorities or limits for any process, and defining traffic rules based on time of day, protocol or application type. Deep packet inspection can monitor and limit unwanted traffic.
NetShare is an app for sharing a device's internet or Wi-Fi connection with other devices without root access. It creates a Wi-Fi hotspot and can act as a Wi-Fi repeater to extend an existing network. Because Android system limitations prevent direct routing without root, connected devices use a local proxy server, and the hotspot is secured with WPA2 encryption. Setup guides cover Windows, macOS, Android, iOS, Chromebook and Linux.
NeverWrite is a local-first knowledge workspace for notes and documents with AI assistance. Notes stay in a folder on the computer, and every AI edit arrives as a reviewable change that can be accepted, rejected or refined before it is written to the vault. It is free, open source under Apache 2.0, requires no account, and connects to models the user already pays for.
Public-records search site focused on New England people, locations, and local information.
NewPipe is an open-source YouTube client for Android that aims to provide the YouTube experience without ads. It lists features including offline usage, background and popup players, subscriptions, bookmarks and local playlists. It also supports services such as PeerTube, SoundCloud and Bandcamp.
Searchable archive of historic newspapers, scanned pages, obituaries and local reporting.
Nextcloud is the most popular open source content collaboration platform, used by tens of millions of users across thousands of organizations globally. Its Nextcloud Hub next-generation digital workspace offers products including file sync and share, video conferencing, groupware, real-time document collaboration, a local AI assistant, and automation tools, with solutions tailored for enterprise, public sector, education, and critical infrastructure use cases.
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.
ngrok is developer infrastructure that routes and secures traffic to apps, APIs and AI models wherever they run, from localhost to production. It offers an AI Gateway, a gateway to services running anywhere, and localhost sharing. It provides a REST-style API at https://api.ngrok.com, plus client libraries, a CLI and a Terraform provider. A guide covers exposing a local MCP server with a stable public HTTPS URL secured by Traffic Policy.
The Ningaloo Atlas is a collaborative partnership between government organisations, non-government organisations, researchers, industry, and community members. It works to improve understanding, raise awareness, and celebrate the biodiversity, heritage, value, and way of life of the greater Ningaloo region. The continuously updated platform hosts recent articles, datasets, and blog posts covering topics including sponge classification, seaweed meadow cycles, dolphin research, local fisheries data, and regional heritage values.
Noi is a desktop application that provides an interaction-focused browsing workflow. It offers multi-window management for parallel workspaces, session isolation, and local-first data storage for history, prompts, and settings. It also includes prompt management for AI chats, a built-in terminal, and a CLI for controlling Noi from tools such as Claude Code and Codex. Builds are listed for macOS, Windows, and Linux.
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.