Directory
Published directory entries matching your search.
Orca is an automated market maker and liquidity infrastructure protocol on Solana. It provides liquidity pools and vaults for earning yield, plus tools to deploy and manage onchain capital. The site states Orca and Loopscale have merged.
Organic Chemistry Portal provides an overview of recent topics, reactions, and information on important chemicals for organic chemists. The site covers name reactions, protective group stability data, synthetic transformations, and article abstracts from organic synthesis journals. It also lists chemicals from suppliers and offers a chemistry tool for estimating molecular properties.
Orion Icon Library is an icon tool offering free SVG and PNG icons. The site lists 3,415 free SVG vector icons and describes an advanced interactive web app with line, solid, color and flat styles, plus a free plan and an unlimited plan.
OroSwap is an AI-powered decentralized exchange built on ZIGChain, described as an AI-native RWA DEX. It offers a Swap Assistant, Multi Swap and Liquidity Manager, with liquidity dynamically managed within adaptive ranges. The site presents it as the first AI-powered DEX on ZIGChain and includes a launch app option and a launch testnet option.
Orteil's homepage is the personal site of a developer who makes toys and games in JavaScript with help from Opti. It lists games including Cookie Clicker, Neverending Legacy, Nested, Genesis, and Murder Games, plus tools such as RandomGen, Idle Game Maker, and the Video Game Generator.
Vehicle lookup site for checking license plates, car data, and public vehicle-related records.
OS Vault is a directory page linking to repositories for downloading Windows versions from Windows 1.0 to Windows 11, including pre-alpha, alpha, beta and RC builds, other Microsoft products such as Office and Plus, and a virtual machine program. It also links to official Microsoft desktop themes for several Windows versions and skins for Windows Media Player 9 Series. The site states it is not an official Microsoft website.
OSBoxes provides ready-to-use virtual machine images in VDI, VMDK and VHD formats for VirtualBox and VMware. The site offers images of Linux and Unix systems that can be downloaded and run as a virtual machine on a host system, avoiding installation alongside the main operating system.
A Chrome extension that combines several OSINT and SOCMINT tools into one package, with added support for Instagram, Twitter and TikTok. Users need an account on each platform and must have the site open with a logged-in session in the active tab. The source code is obfuscated, which may trigger antivirus alerts.
OSINT Techniques offers free open source resources for open source intelligence and social media investigations, aimed mainly at analysts and researchers in investigative roles. The site explains that open source means publicly available information that any member of the public can lawfully obtain, and includes sections on tools, training, books and videos.
OSINT Toolkit provides email and username lookup tools. Users enter a username or email to run general searches, social media searches and messaging app searches. The site notes that username and email results are an approximation, so negative results do not necessarily mean an account is not in use.
OSINT resource site with links, guides, tools, and investigation references.
ArcGIS Hub site for discovering, analyzing and downloading data. It supports downloads in CSV, KML, Zip, GeoJSON, GeoTIFF and PNG formats, provides API links for GeoServices, WMS and WFS, and offers analysis with charts and thematic maps.
OSS Gallery is a crowdsourced list of open-source projects on the internet. The site features projects with star counts and short descriptions, including Dub, shadcn/ui, freeCodeCamp, and roadmap.sh. Individual project pages present summaries such as Dify's LLM app development platform and LibreChat's ChatGPT clone.
osu!droid is a free-to-play circle clicking rhythm game for Android devices, originally created by the osu! community and now developed by a small group of fans. Each beatmap has a leaderboard for competing with other players. The site states the game has never been released on Play Store and is not affiliated with osu! or ppy.
A volunteer group that preserves classic video game magazines by digitizing and restoring them. It offers articles on its site and creates complete cbz files of magazines. It seeks magazines no longer published and at least 10 years old, unless the publisher grants permission, and excludes reprints and re-issued digital versions.
OverAPI.com is a site that collects all the cheat sheets. It organizes reference sheets for programming languages, frameworks, and developer tools, listing topics from Python and JavaScript to HTML, SQL, and Linux.
A web-based data mining tool for OpenStreetMap that runs Overpass API queries and displays results on an interactive map. The site requires a browser supporting the Web Storage API and cross-origin resource sharing, and notes that a more capable browser may be needed.
OvertakeFans is a Formula 1 fan site presenting best moments of Formula 1. The page displays countdowns to United States Grand Prix 2026 Practice 1 and the United States Grand Prix 2026 Weekend Warm-Up, and invites visitors to a Discord server to discuss sessions live and get support.
Own-Free-Website.com is a service for creating a free homepage without coding skills. It offers a short ".page.tl" domain ending, up to 1 gigabyte of free web space, design templates, and features such as a guestbook, hit counter and survey function. Premium packages are available for extending a site.
Wordy is a writing tool for drafting blog posts and private notes. Documents are stored locally, with optional account sync, and can be published as a link or public page. The tool supports adding images and galleries. The site states it is free, open source and without ads or subscriptions. Email newsletters, publishing from Notion and blog search are listed as coming soon.
Oxford University Research Archive is the University of Oxford's repository for its research output. Members of the University of Oxford can deposit research including articles, conference papers, theses and data. The site also presents latest additions.
Oxfordshire Open Data provides a place for the public, researchers and developers to access, analyse and share information about the area. Data may be viewed, re-used and downloaded under licence. The site offers browsing by categories including population, finance, economy, education, elections, environment, food, health, parks, planning, public safety, land and property, and transportation.
The Pacific Northwest National Laboratory DataHub is a searchable repository of scientific data and publications. The site offers filtering by category, content type and tags across topics such as biology, earth system science and computing. Listed content types include publications, datasets, people, projects, data sources, institutions and software.
