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Hybrid is a Qt-based frontend for other tools that convert most input formats to common audio and video formats and containers. It is intended for advanced users, not for amateurs needing a wizard-like interface, and offers job/queue-based processing, profiles, an integrated bitrate calculator and chapter and subtitle support.
skāl.es is a work-life balance calculator. Users add work and life values to a weekly balance chart with activity hours per day and days per week, and receive a Skāl.es score. Rows can be enabled or disabled. The site also presents statistics on remote work and work-life balance.
Smogon is a Pokémon website and community specializing in competitive battling. It offers a strategy Pokédex, articles, in-game guides, a damage calculator, tournaments, tutoring, and the Pokémon Showdown battle simulator, along with forums, a Discord server, and a Create-A-Pokémon project.
Sol is an open-source macOS launcher focused on simplicity and speed. It offers an emoji picker, calculator, file and app search, a window manager, clipboard manager, calendar integration, browser bookmarks, media key forwarding, quick notes, process manager, keyboard shortcuts, translation, a notch hider, and developer commands. It is installed from the latest release or via Homebrew.
Stat Trek provides free online tutorials and calculators covering statistics and probability. Tutorial topics include AP Statistics, probability, linear regression, ANOVA, survey sampling, and matrix algebra, explained in plain English. The site also offers practice exams and a random number generator and sample size calculator for statistical work.
StepByStepML provides free online machine learning calculators that solve algorithms step-by-step for computer science exams. Users input a dataset and the site shows the full manual calculation for algorithms including K-Means, Minimax, KNN, A* Search, and evaluation metrics. Theory guides accompany the interactive solvers, and the site states it is built for CS students.
Study Hatch is an educational site for IGCSE and A Levels with past papers and classified questions from CIE, AQA and Edexcel. It offers content search, an IGCSE score calculator, a custom exam PDF builder and an AI assistant. Premium VIP plans are available.
StudyKit is a free student resource toolkit that provides over 50 tools across maths, science, writing and study categories. The toolkit includes calculators, timers, mind maps, flashcards, quiz generators, exam countdown trackers, and writing assistance tools for student use.
The Engineering ToolBox provides free tools, calculators and information resources for engineering and design of technical applications. It covers fields such as fluid mechanics, material properties, HVAC systems and electrical engineering, including unit conversion and system design. Sections span topics from acoustics to hydraulics, aimed at students and professionals.
The Quiet-Broke Index is a research project modeled by Henry Finance that estimates the high-earner squeeze across 30 US metros at a $400,000 household income. It combines five fixed costs: housing, taxes, childcare, healthcare and transportation. A calculator gives a 0–100 score from five inputs, and the site ranks cities and reports per-line-item decomposition.
Topster.net is a platform offering services for personal homepages, funny time distribution content, various online games, and a huge members area. It also provides a day calculator, alongside content such as location panoramas, picture display features, and tilt-shift effect miniature landscape content.
Vertex42 provides professionally designed spreadsheet templates, calculators and calendars for business, home and educational use, including templates for Microsoft Excel, Google Sheets and OpenOffice.org. It also offers Microsoft Word templates and Excel tutorials for beginners.
Vicinae is a keyboard-first launcher for the desktop. It provides a single interface for applications, file search, clipboard history, a calculator, an emoji picker, window management, browser tabs, fonts, theming, power management, shortcuts and scripts. Extensions can be built with React and TypeScript, and many Raycast extensions and script commands can run out of the box. It is free and open source.
VisualizeHabit is a tool focused on helping users build small, consistent habits to reach their goals. It offers a free calculator that shows the cumulative results of tiny habits over a year, suggests habits for users to adopt, and visualizes how habits compound over 1 or 10 years to motivate users and help them avoid procrastination and failed New Year's resolutions.
A page for building and installing a firmware containing a port of the nofrendo NES emulator on the NumWorks calculator. It requires an official firmware upgrade and works only with the old hardware revision (N100). Users choose a ROM and a base firmware, then upload via USB.
Win7Games offers a package that restores classic Windows 7 games, such as Solitaire, Minesweeper and FreeCell, on Windows 11, Windows 10, Windows 8.1 and Windows 8. It also includes other classic apps, such as WordPad and the classic Calculator. The package supports silent setup and multiple language packs.
Wolfram|Alpha is a computational knowledge engine with broad knowledge and deep computational power in mathematics. It provides calculators and answers across elementary math, algebra, calculus, geometry, number theory, discrete and applied math, logic, functions, plotting, advanced mathematics, definitions, famous problems, continued fractions, and Common Core math. Users can get help with math homework, solve specific problems, or find information on mathematical subjects and topics.
