SpeedCrunch is a free, open-source high-precision scientific calculator licensed under the GPL. It features a fast, keyboard-driven interface that displays results as users type, with a scrollable input history, customizable syntax highlighting, and an optional on-screen keypad. The calculator supports over 80 built-in mathematical functions, user-defined functions, variables, calculations with up to 50 digits of precision, complex numbers, numeral bases, unit conversions, and includes a library of over 150 scientific constants and common formulas. It is available for Windows, macOS, and Linux in multiple languages.
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Speedtest is a tool hosted on pixeldrain, a file transfer service that allows users to upload files and receive shareable links. Pixeldrain supports previews for images, videos, audio, PDFs and other file types.
Spellcheck provides educational videos, lessons, tutorials, or self-learning resources.
Spike is an AI-powered email platform and workspace that combines email with messaging, channels, groups, a shared inbox, video meetings and collaborative documents. It can be used with any existing email or with a business email created through Spike.
Spiked is a British online political magazine founded in 2000. It publishes articles, essays, podcasts and videos, and describes itself as making the case for freedom of speech, democracy and human endeavour. Much of its revenue comes directly from readers, and it offers supporter access.
Browse live games, matches, races, or fight cards through Split TV's sports schedule.
Crowdsourced tool for skipping sponsored segments and non-content sections in online videos.
Sportera presents live football match listings, with upcoming fixtures, match results, leagues and teams. The site covers competitions such as the Premier League, LaLiga and Champions League, and shows live scores.
SportsBite provides live television channels and recent-programme viewing through its web service.
SportsBite TV provides live television channels and recent-programme viewing through its web service.
Sportsurge lists live games, matches, competitions, and sports viewing pages.
Browse live games, matches, races, or fight cards through SportyHunter's sports schedule.
SpreadTheSign provides educational videos, lessons, tutorials, or self-learning resources.
Sprocket School presents a browser-based catalogue of films, series, and episode pages.
Sprout is an interactive anime recommendation engine that uses a machine learning model to generate tailored recommendations based on watch history and ratings from MyAnimeList or AniList profiles. It also provides stats and visualizations of personal watch history and preferences, plus the Atlas Visualization. Sprout is fully open source.
SQL Easy is a free interactive SQL tutorial offering 31 exercises that run against a real SQLite database in the browser. It provides hints when users are stuck and immediate feedback when a query is correct, and requires no signup. It is built by the team behind Beekeeper Studio.
SQL Noir provides educational videos, lessons, tutorials, or self-learning resources.
SQL PD provides educational videos, lessons, tutorials, or self-learning resources.
SQL Practice provides educational videos, lessons, tutorials, or self-learning resources.
A fan-run, noncommercial archive for fandom works such as fanfiction, fanart, fandom meta, fan videos and podfic. It is a project of Squidge.org based on open-source code from the OTW. Users with an account can share fanworks, receive update notifications, take part in challenges and track visited and saved works.
Squid TV is an independent guide to television broadcasters around the world. It provides editorial profiles describing where broadcasters are based, the areas and audiences they serve, the languages they use, their main programming fields, and their historical or institutional background, browsable by region, country or globe.
Srstop is a free platform for watching TV shows online. It features a calendar of new episodes, listing series such as Big Brother, Law & Order Toronto, and Outlander. Users can register or log in, and content is available without downloads.
SSC provides educational videos, lessons, tutorials, or self-learning resources.
Stable Diffusion Prompts on MPost is a Metaverse Post article that shares over 100 text-to-image prompts for use with Stable Diffusion to create AI-generated images. The prompts are organized by use case, including photography, portraits, concept art, architecture, fashion, 3D content, video games, graphic design and wallpapers, to support creative projects.