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A blog listing undergraduate and basic graduate textbooks and lecture notes for studying pure mathematics or statistics. It organizes material into stages, from elementary topics through analysis, algebra, topology and optional subjects, and is addressed to beginners who want to learn mathematics.
Online HTML editor is a browser-based HTML editing tool powered by CKEditor 5, offering Word to HTML conversion and real-time collaboration. It provides control over source code, custom elements and styles, and can work with complete HTML documents including meta tags and comments.
HTML Reference is a free guide to HTML elements and attributes. The site organizes elements into collections including base elements, forms, lists, semantic elements and tables, and marks some entries as experimental. Each element entry lists attributes with meta, self-closing, inline and block annotations.
Humaaans is a mix-and-match illustration library of people, made for InVision Studio and Sketch. It lets users create remixes by changing hairdos, tops and pants, designing the human body, and rotating and positioning elements. The illustrations are available under a CC0 public domain license for commercial or personal use by Pablo Stanley.
Instagram - visible images counter is a userscript for Instagram profile pages. It adds a static element that shows how many images out of the total are currently visible, as a number and as a percentage, while scrolling.
A virtual museum of pure chemical elements from the periodic table, with images and information published under a Creative Commons license. It includes a periodic table linking to element pages, plus games, calculators, and a simulation.
InColor helps create colors, gradients, pixel assets, or visual design elements.
IOPaint is a free, open-source and fully self-hostable image inpainting and outpainting tool powered by AI models. It can erase unwanted objects, add or replace elements in images, generate text, and generate new pixels around images to enlarge them, with various models available for different tasks.
A browser-based roguelike MMO that combines elements of MMOs, ARPGs and roguelikes, with server-based networked multiplayer and crossplay between browser, mobile and a stand-alone client. A supporter pack and skin packs are offered, and a free download is available for Windows, macOS and Linux at a user-chosen price. The listing notes the project is in development.
Issuu is a digital publishing platform that converts PDFs and other documents into interactive flipbooks. Users can embed these flipbooks on websites, share them via simple links, add interactive elements such as videos and web links, track reader engagement via statistics, and sell digital publications. The platform serves use cases across industries including education, marketing, publishing, and retail, and supports collaborative team workflows.
Kyun is a terminal text editor written in Rust, described by its author as the worst text editor yet. It is intended for writing cutesy text and provides syntax highlighting for Rust and Unicode art, along with colorful interface elements. It is based on another editor by Philipp Flenker and is licensed under CC BY 4.0.
Lo-Fi Player is an interactive lofi beat player built as a virtual room. Interacting with elements in the room builds a custom music stream, with controls for melody, bass, chords, background sounds and drums. It was built by Vibert Thio, an intern on the Google Brain team, and is powered by Magenta. The page recommends a desktop window wider than 700px.
Lucy Text To Image is a Hugging Face Space created by tonyassi that generates realistic dress images using Stable Diffusion. Users input a dress description, select preferences including color, features, occasion, and garment type, and the tool builds a prompt to produce the image, with optional element swapping functionality.
Open data portal of Massachusetts state government.
The MCHF/MCDHF Database is a NIST collection of transition data from relativistic theories computed by different computational methods. The Landé gJ factor is provided for a few collections. Data is accessed by selecting an element from the periodic table, then a spectrum, a reference number, and a property. Atomic structure codes used in the calculations, including HFFortran95, ATSP, ATSP2K and GRASP2K, are available for download.
Metastrip is an open source web tool designed for stripping metadata from files. It is hosted on GitHub under the lars-1987/metastrip repository, with documentation covering its purpose, supported file types and the metadata elements it removes.
Multiavatar is an open-source multicultural avatar generator that can produce 12 billion cryptographically unique avatars. Names and words are associated with avatars randomly. Generated avatars can be used free as profile pictures, gaming logos or design elements, and the generator is written in JavaScript, PHP, Python and Solidity.
Musicca is a free music theory learning resource with exercises and content covering notes, rhythms, intervals, chords and instruments. It adds game elements to learning and offers accounts that give access to all content and remove ads. The site also provides material for schools and educators.
Napkin AI is a tool that turns pasted text into visuals such as flowcharts, mind maps, infographics, diagrams, data charts and slides, without design skills. Users generate visuals from their text, then adjust colors and elements. Visuals can be exported as .ppt, .png, .pdf or .svg. A free plan offers 500 AI credits per week, and pricing lists Plus at $9 per person per month.
A website that links to online nuclear astrophysics datasets and hosts the Computational Infrastructure for Nuclear Astrophysics. It provides reaction rate collections, cross sections, and a Java interface for calculating reaction rates, running element synthesis simulations, and sharing files with other researchers online.
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.
Paintings by Style on WikiArt is a webpage that catalogs artworks by art style, with styles ranging from Gothic to Impressionism. It defines art style as the distinctive visual elements, techniques, and methods of an artwork, which typically correspond to an art movement or the school or group its creator is associated with.
Paper2Audio is a free text-to-speech service designed for reading digital documents aloud. It supports PDFs, EPUBs, web articles, and other common document formats, uses natural AI voices for accurate reading, and includes no ads or paywalled voice features. The tool correctly processes figures, tables, and mathematical content, and skips extraneous page elements like inline references and endnotes to focus on relevant content.
A downloadable Windows application by AGGRO CRAB that procedurally generates a variety of parties as a music visualizer. Controls include spacebar to generate a new party, arrow keys to change BPM, and mute to play other beats. The developer states more content and interactive elements are likely planned.
