Directory
Published directory entries matching your search.
NotesOnline is a browser-based notepad offering rich text, multiple tabs, autosave and exports to TXT, Markdown or HTML. Notes are stored on the user's device. It also provides keyboard shortcuts, find and replace, and dark mode.
novelWriter is a free and open source plain text editor for writing novels and larger projects made of many smaller plain text documents. It uses a markdown-like syntax with meta data for comments, synopsis and cross-referencing, and stores projects as human-readable text files. It offers project tree organisation, Novel and Outline views, and a build tool exporting to several formats.
NUKEMAP is a website created by Alex Wellerstein for visualizing the effects of nuclear detonations. Users drag a marker to a target, choose a warhead yield or preset, and detonate; the map renders effects and supports export to Google Earth as KMZ.
Nullboard is a minimalist kanban board and task list manager for desktop and keyboard/mouse use. It is a single-page web app with one HTML file, jQuery and a webfont pack, usable offline. Data is stored locally in localStorage and can be exported to or imported from JSON text files. It is described as still very much in beta.
Numla is a minimal browser-based calculator notepad for quick everyday calculations, including arithmetic, currency conversions, percentages, and unit conversions. It operates entirely locally with no user accounts or tracking, supports offline use, and includes features such as tabbed notes, instant note search, a Time Machine version history tool, focus mode, theme customization, and .txt file export. It is distributed as a progressive web app.
NZBKing is a Usenet indexer that searches Usenet posts and generates NZB files. It allows browsing posts across groups and exporting NZBs for a newsreader. Downloading the underlying files requires a premium Usenet provider and an NZB-capable newsreader. Commercial use is prohibited.
Octopus.do is a visual sitemap and website planning tool. It offers a visual sitemap builder with lo-fi wireframes for prototyping website architecture, and allows crawling a website, choosing a template, or generating with AI. Sitemaps can be shared without sign-up, and exports include PNG, PDF, Excel, Figma, and WordPress.
OCTOPUS is a web-enabled database for visualizing, querying, and downloading cosmogenic radionuclide, luminescence, radiocarbon ages, and denudation rates linked to erosional landscapes, Quaternary landforms, and paleoecological, paleoenvironmental, and archaeological records. It also includes ancillary geospatial data layers and supports exporting vector and attribute data.
OG Image Generator is a free web tool for creating open graph images, social media previews, and Twitter cards. It offers customizable templates, fonts, and optional app screenshot support, exporting images as 1200×630 PNG files.
OneTab is a browser extension for Chrome, Firefox, Edge, Safari and other browsers that converts open tabs into a list, which can reduce browser memory use by up to 95%. Tabs can be restored one at a time or all at once and organized into folders, with import and export of tab lists and sharing as a web page.
Open-source command-line tool that queries multiple onion search engines and exports results.
An online color picker tool for choosing colors and exporting them as hexadecimal, RGB, HSV or HSL codes. It shows color combinations including complementary, triadic and analogous schemes, and saved colors remain until cleared.
Online Sequencer is a browser-based music sequencer for making tunes and sharing them with friends. It offers instrument selection, note and marker selection, grid and time-signature settings, and export to MP3, WAV and MIDI, along with MIDI and sequence import and sheet music opening.
Online2PDF is a free online PDF converter that combines conversion, merging, editing, compression, unlocking and protection in one interface. It converts Word, Excel, PowerPoint, OpenOffice, image and XPS files to PDF and exports PDFs to Word, Excel, PowerPoint and JPG. It also supports page extraction, reordering, splitting, rotation and removing printing or editing restrictions.
onUI is a browser extension for Chrome, Edge and Firefox with a local MCP bridge, used to annotate or draw on any web UI and export structured context for AI agents. Annotations require no app code changes; per-tab control is off by default.
orDrumbox is a free online drum machine and multi-track step sequencer that runs in a web browser. It offers a step sequencer, automatic rhythm and pattern generation, an integrated software synthesizer, and drum kits and audio samples. Users can create and edit drum patterns and export them as WAV files.
Osintracker is a browser-based OSINT investigation platform. It maps entities and their relationships in an interactive graph and stores all investigation data locally. Users can run matched OSINT resources and import connector results to expand the graph, then export to HTML, Markdown, CSV, JSON or PNG.
oTranscribe is a free HTML5 web app for transcribing recorded interviews, intended for journalists, academics and others working with audio. It works on desktop computers only, offers keyboard controls for pause, rewind and fast-forward, and adds interactive timestamps to the transcript. Work is saved to the browser's storage, and transcripts can be exported to Markdown, plain text and Google Docs.
PackCrafter is a free browser-based Minecraft resource pack editor. It provides a pixel editor with 16 drawing tools and layers, and supports animations, random variants, face overrides, custom sounds, splash texts and display transforms. Blocks can be previewed in 3D, and packs export as a .zip file. The interface offers three progressive levels, and no account is required.
A command line tool for creating Minecraft modpacks. Instead of managing JAR files directly, it creates TOML metadata files that can be version-controlled and shared with git. Packs can be exported to CurseForge or Modrinth, or used with packwiz-installer for an auto-updating MultiMC instance.
PageRip is a Chrome extension that extracts HTML and CSS from web pages using an element selector, or converts full pages to single-file HTML and JSX. It can export to CSS classes or inline styles, and code can be previewed and copied. The tool is described as completely free and works offline.
Paint of Persia is a rotoscoping pixel-art tool for drawing on top of any window or wallpaper. It is made for pixel-art animation and sprites, with scale and transparency control and export of single frames or sprite sheets. It works with Windows 7+, and the macOS version is an alpha that may contain bugs.
PaletteGenerator is a tool for generating color palettes for web UX/UI design. It offers 8 harmony methods, a live interface preview, palette refinement, and export to CSS variables, JSON and SVG.
Paletton is a designer color tool for creating color combinations that work together well. It uses classical color theory with an RYB color wheel to design palettes of one to four hues, each of five shades. Palettes can be previewed in styles including web site design and UI design, and exported in formats such as HTML, CSS, XML, PNG and Photoshop ACO. It is the successor of Color Scheme Designer.
