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Published directory entries matching your search.
C3.js is a D3-based reusable chart library. It wraps the code required to construct entire charts, gives classes to elements for custom styling, and provides APIs and callbacks to access chart state and update charts after rendering.
CCC Data Base is a database of convergent close-coupling cross-section data for atomic targets, created by Yuri Ralchenko and Igor Bray. It lists electron-impact data for several elements and ions, positron-impact data for several targets including H-like ions, and proton-impact data for helium. Molecular targets are directed to a separate site.
CelesTrak is a 501(c)(3) non-profit that provides orbital data and related resources to the space community. Its site offers NORAD GP element sets, a satellite catalog, conjunction reports, GPS data and space weather data. It notes that 5-digit catalog numbers ran out on 2026-07-11, so newly cataloged objects with 6-digit numbers lack GP data in TLE format.
The Basics of General, Organic, and Biological Chemistry is an open textbook covering chemistry, matter and measurement, elements and the periodic table, bonding, chemical reactions, quantities, energy, and organic chemistry topics.
ClearURLs is a browser add-on built on WebExtensions technology and optimized for Firefox and Chrome based browsers. It automatically removes tracking elements from URLs in the background to help protect privacy while browsing, using a rules catalog maintained by the project and community. It also blocks some common ad domains optionally, blocks hyperlink auditing and prevents ETag and history API tracking. Chrome-based browsers may disable the add-on during the Manifest V2 phase-out.
Video keying tool for extracting green-screen or background elements from footage.
An image resource providing free abstract backgrounds, textures and design elements that can be cut and pasted into designs or used for inspiration. The site states it contains more than 2500 files, about 6GB of abstract digital photos, backgrounds and basic video clips, available under a Creative Commons Attribution 3.0 License with credit to the site and contributor required.
CSS Speedrun is a small web app for testing CSS knowledge. Users enter the CSS selector that applies to all elements marked with an arrow, and a timer starts after the first puzzle is solved correctly. It presents 10 puzzles, and users can view their results or check the GitHub repository to create their own puzzles.
DiceSimulator.com provides a dice simulator for traditional six-sided dice, letting users choose one to six dice and roll them. The site also includes pages on the history of dice and on popular dice games. It explains that dice are used in gambling and fun games to add a random element.
Discord Adblock is a CSS rule collection that reduces Nitro ads and other premium-only elements in the Discord client, such as the store, gift button and various upsells. It requires a client mod like Vencord or BetterDiscord, where the list is added through the Custom CSS menu. The author notes that rules using :has() may slightly degrade performance.
The EELS Data Base is a compilation of valence and core-loss spectra from Electron Energy Loss Spectroscopy experiments and X-Ray spectra. It covers 290 spectra across 43 elements of the periodic table. Users can browse spectra by element, formula or author, view them online or download them, and submit their own published data.
Embossify.com is an online design utility that converts JPEG images and drawings into 3D STL meshes suitable for 3D printing or CNC routing. It produces lithophanes, reliefs and other 3D design elements by tessellating a JPEG pixel by pixel into a topographic model of the image's brightness. Low resolution renderings are free; high resolution renderings cost $5 each.
Engineering Archive is a preprint server showing a latest preprints feed of engineering research papers, each with authors, DOI links, and PDF or DOCX downloads. The excerpt lists topics including beam finite element analysis, satellite beam tracking, ground-penetrating radar modeling, robotic control, seawater electrolysis, wave energy conversion, and pose estimation.
explaine.rs is an interactive playground for exploring the syntax of the Rust programming language. Users write Rust code in an editor, and an analyzer explains keywords, punctuation and other code elements when clicked or tapped. The site states it is a work in progress and requires a WebAssembly-compatible browser.
Fake Data is a browser form filler for web developers that generates data for form fields. It is installed as a browser extension and requires no advanced setup or configuration for first use. It supports custom JavaScript code and custom elements, and it learns new fields as they are used. It is compatible with most major browsers.
FANTOM (Functional ANnoTation Of the Mammalian genome) is a worldwide collaborative project aiming to identify all functional elements in mammalian genomes. The FANTOM web resource provides functional annotations and tools for exploring mammalian noncoding genomes.
The Federal Interagency Traumatic Brain Injury Research Informatics System (FITBIR) is a U.S. federal interagency platform for traumatic brain injury (TBI) research. It provides resources for defining, submitting, accessing, and visualizing TBI-related research data, including data dictionaries, common data elements for TBI, chronic TBI-related neurodegeneration, preclinical and trauma research, and tools for accessing biospecimens from affiliated biorepositories. As of the snapshot, the system announced it would limit publicly hosted data to NIH-funded studies starting August 24, 2026, and would no longer accept new data submissions for most studies.
A Telegram channel offering Freepik and Envato Premium files. Users copy a link from the Freepik site and search the channel or send the link to a bot. One free file a day is offered, and files from Envato Elements are listed at 5000 UZS per file.
Telegram channel sharing stock photos, illustrations and videos sourced from CreativeMarket, Depositphotos, Fotolia, iStockphoto, Photodune, Shutterstock and Envato Elements. The channel states that the material is for personal use only and directs users to read licenses for more information.
Gizmo is an AI-powered learning application. Users input the material they are learning, and the tool's AI converts it into flashcards. Quizzes use gamified elements, spaced repetition, and active recall techniques to support learning retention.
GPThemes is a Chrome and Firefox extension that modifies the ChatGPT web interface. It offers custom accent colors, adjustable chat and chatbox widths, typography controls for font family, size, line height and letter spacing, toggleable message bubbles, and light, dark and AMOLED themes. It also provides a distraction-free view that hides elements such as the header, footer and upgrade chip, an expandable prompt box, and a floating theme switcher. The extension is available for Firefox for Android and Cromite.
The Graph is a static sheet view of tracker connections that lets users abbreviate tracker names, remove dead ends, and set source and target filters. Users can hide elements not on a path, display a path description, and click circles and arrows for additional information. The site is no longer maintained.
A 3D visualization of the periodic table with a table view shown initially and an atomic view reached by clicking each element. The atomic view uses a 2D Bohr model representation with electrons rotating in a plane.
NIST Standard Reference Database 108 is a handbook of basic atomic spectroscopic data, compiling data for neutral and singly-ionized atoms of elements hydrogen through einsteinium. Wavelengths, intensities and spectrum assignments are given in tables per element, with about 12,000 lines collected in a wavelength-sorted finding list.
