Popular Websites

Google's two-factor authentication app that generates time-based codes for online accounts. Free.

An MIT-licensed JavaScript cron syntax validator with configurable grammar options.

Microsoft Clarity provides free website analytics with heatmaps and session recordings to study visitor behavior.

MIT advances knowledge and educates students in science, technology and other areas, according to its mission statement.

Google Codelabs provides guided, hands-on tutorials for building applications and adding features across developer technologies.

Google Arts & Culture presents content from more than 2,000 museums and archives through the Google Cultural Institute.

Wikipedia's Unusual articles page collects articles that are notable for their unusual subjects.

The r/IGCSE Resources Repository is a student-run collection of resources for students preparing for IGCSE examinations.

This Wikipedia page lists alternative shells for Windows and notes that the article needs additional citations.

Manage two-factor authentication codes with OTP Auth, an iOS app listed on the App Store.

Prism is a free browser-based LaTeX editor for scientific papers, with AI-assisted writing, compilation and real-time collaboration.

The Stanford Encyclopedia of Philosophy provides an online encyclopedia with browse tools, new entries, and chronological archives.

Awesome CLI provides a command-line tool for browsing and exploring Awesome lists.

Backpack combines a crypto wallet with spot and futures trading and lending across Solana, Ethereum, and Bitcoin.

The Logitext interactive tutorial teaches the sequent calculus through a simple set of inference rules.

Brands of the World hosts downloadable vector logos and a community where designers can showcase and critique logo work.

Brandfetch provides searchable company logos, colors, fonts, and brand assets, with APIs for integrating brand data into other products.

MathNet lets users browse and search more than 30,000 Olympiad-level problems from 47 countries in 17 languages.

Experian AutoCheck provides vehicle history reports covering accidents, mileage, ownership, and related records.

The Internet Archive preserves web pages and digitized media and provides public access to its collections.

Microsoft notebooks provides integrated Jupyter notebook experiences for Python and data science.

Test beta versions of apps and App Clips with Apple TestFlight; the listing says it is not currently accepting new testers.

DuckDuckGo HTML offers private search for browsers with JavaScript disabled, according to the search page’s description.

Cloudflare Web Analytics tracks essential website usage statistics through a free analytics service.