Tiger Algebra provides educational videos, lessons, tutorials, or self-learning resources.
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Phrases.org.uk is a free public resource explaining the meanings and origins of thousands of English phrases, sayings, idioms, expressions and proverbs. Established in 1997, it is researched and written by Gary Martin and cited as a reference by leading publishers.
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.
Math Notepad is a web-based mathematical editor for performing calculations and plotting graphs. It supports real and complex numbers, matrices, and units. The tool automatically updates dependent calculations when expressions are changed, and is designed for engineers, students, and pupils. It is powered by the math.js library and is the successor of SpeQ Mathematics.
WBO is a free, open-source online collaborative whiteboard that enables multiple users to draw simultaneously on a large virtual board, with real-time state updates for all connected users and persistent board storage. It is suitable for use cases including art, entertainment, design and teaching. Public boards are accessible to all users and are ephemeral, while users can also create private boards with random or custom names shared via link.
Alumnius.net is an educational research tool focused on alumni of American universities. Users can select a listed university to view associated alumni information. For each alumnus, the site provides details including photos, location, education, jobs, and skills. The platform hosts pages for a large number of U.S. higher education institutions.
PLText is a free AI-powered plagiarism checker, detector, and remover. It scans text against billions of web pages, academic resources, and journals to identify exact, partial, and weak matches. Users receive detailed reports with source links and an originality score. A one-click rewrite function can modify flagged content. The service offers a free tier with up to 1000 words per search without login. Paid subscription plans include Basic at $7.93 per month (annual), Pro at $15.68 per month, and Pro+ at $30.04 per month, as well as pay-as-you-go options.
