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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.
Kalker is a scientific calculator application that supports user-defined variables and functions, ambiguous input syntax, differentiation, integration and complex number calculations. It runs natively on Windows, macOS, Linux and Android, and operates in web browsers via WebAssembly. The tool uses math-like syntax for input and supports sum calculations alongside standard and advanced mathematical operations.
Kitco provides live gold and silver prices, metals news and analysis, mining news, and market commentary. Its site covers ETFs, FOREX, Bitcoin and crypto, and stock markets, with live spot metal pricing and an exchange and metal value calculator.
LLM pricing calculator is a web page for estimating model costs per million tokens. It takes input, cached input and output token counts and reports cost per million input tokens, per million cached input tokens and per million output tokens. It notes that direct token-based price comparisons may not be entirely accurate because different models use different tokenizers.
Lofty is a fractional U.S. real estate investing platform where visitors can browse property shares, learn about rental property investing, and review calculators and guides. It also provides support for marketplace orders and account activity.
LoL Math is a free League of Legends build calculator and item optimizer. It analyzes runes, enemy team composition and playstyle to calculate builds for champions, and the site states its algorithm analyzes thousands of item combinations.
MathDF is an online math solver with integrated AI chat and step-by-step solution functionality. It supports solving derivatives, integrals, equations, inequalities and related math problems. Users can input problems via math keyboard, photo scan, handwriting, or natural language. The tool provides instant in-browser results while typing, offers step-by-step solutions for eligible problems, supports image attachments, and includes a basic calculator mode.
Mathway is an AI-powered math solver and calculator backed by Chegg. It provides step-by-step solutions to problems across 11 math and science subjects, including algebra, calculus, statistics, chemistry, and physics. Users can input problems by typing, uploading a photo of handwritten or printed work, or using over 59 dedicated free calculators for tasks like solving equations, factoring, and graphing. The service has been refined for over two decades and has solved more than 5 billion problems.
MDCalc is a source for medical equations, algorithms, scores, and guidelines. It offers a library of calculators, including the Cockcroft-Gault creatinine clearance equation, a weight-based levothyroxine dose calculator, CKD-EPI GFR equations, mean arterial pressure, and the SpO₂/FiO₂ ratio. Tools can be browsed by specialty and filtered by calculation purpose.
microMathematics Plus is an open-source Android scientific graphing calculator and function plotter oriented around worksheets. It enables users to perform mathematical calculations in naturally readable form, create interactive formula collections, edit mathematical identities live with high accuracy, and store documents containing formulas, plots, text and images. The app includes no ads, trackers or telemetry, supports common mathematical operations and SI and non-SI units, and works on smartphones and tablets in portrait and landscape modes.
A site offering wikis and guides for Minecraft mods and modpacks, covering items, recipes, bosses, progression, checklists and calculators. It also includes puzzles and tools such as a Nether Portal calculator and Stronghold Finder.
Minecraft Tools is a site offering free tools for Minecraft, including custom crafting, firework crafting, a flat world generator, a mobs generator, an enchant calculator, banner crafting, armor color, color codes and text generators. A page lists crafting recipes in Minecraft by category.
MISSILEMAP is a digital mapping visualization by Alex Wellerstein that graphically displays the range and accuracy of many types of missiles. It includes a location lookup and a Single Shot Probability of Kill calculator, and is intended to help show the relationship between missile range, accuracy and warhead size.
An interactive playground and graphical semantic calculator for modal propositional logic. Users add states and transitions to build models and enter formulas using notation such as []A for necessity and A for possibility.
Nano ID CC is a collision calculator for Nano ID, a library for generating random IDs. It helps estimate how much an ID length can be reduced, given a chosen alphabet, ID length and generation speed, to keep the probability of at least one duplicate low.
NotesPlus is a note-taking app for iPad and iPhone built around Apple Pencil use. It supports importing PDF, PPT, Word, image and web link files, and offers study aids including a calculator, clock, timer, screenshot and draft tools. Online class videos from BaiduNetdisk or bilibili can be added, and notes sync through iCloud.
Numbat is a statically typed programming language and high-precision scientific calculator with first-class support for physical dimensions and units. It supports mathematical computations, unit conversions, and physical quantity calculations, with documentation, syntax reference, and installation guides available.
Numbr is a smart calculator combined with a notepad that allows users to work with numbered notes alongside calculations. It is available as a web application and a Chrome extension, with documentation, bug reporting, and tips resources provided.
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.
Paimon.moe is a companion site for Genshin Impact. It offers an ascension calculator and database to plan farming, a todo list, and a wish counter that imports wish history and tracks pity and wish statistics. It also provides reminders and an achievement tracker.
Palworld.gg is a Palworld database and wiki covering Pals, breeding, items, weapons, structures, an interactive map and building information. It also provides a breeding calculator, team builder, tier list, capture rate and technology tree.
PCjs Machines offers online machine emulators written in JavaScript. It runs DOS, Windows, OS/2 and other vintage PC applications in a web browser on desktop computers, iPhones and iPads. Emulations also cover microcomputers, minicomputers, terminals, programmable calculators and arcade machines, alongside an archive of historical software and documentation.
PokéClicker is a browser-based Pokémon game featuring a Pokédex, items, achievements and challenge modes. It includes dungeon runs, where hired dungeon guides open chests, descend ladders and start boss battles for an upfront, non-refundable cost. A Battle Frontier offers stages for Battle Points, and a damage calculator is listed.
Pokémon Showdown is a browser-based Pokémon battle simulator. Users can play battles online with randomly generated teams or teams they build themselves, with animated battles. The site also offers a damage calculator, usage stats, a Pokédex, replays and a strategy forum.
