freecodecamp.org
The Odin Project provides educational videos, lessons, tutorials, or self-learning resources.
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theretroweb.com
The Retro Web is a hardware database covering motherboards, expansion cards, chips and CPUs, chipsets, drives and related components. It offers board photos, BIOS images, manuals, drivers and software, with quick search and browsing by category. Listings include counts such as motherboards, BIOS images, manufacturers and chip families.
satsuite.collegeboard.org
The SAT: Practice Tests provides educational videos, lessons, tutorials, or self-learning resources.
newfastuff.com
The Trolley Problem Game is a free game based on the trolley problem, in which a trolley heads toward five people and the player at the lever can redirect it onto a track that kills one person. The game includes dozens of interpretations of the problem and is also offered as an Android app.
northampton.ac.uk
The University of Northampton is a higher education establishment based in Northampton that offers undergraduate and postgraduate courses. It identifies social impact as its core purpose and runs a student support package including laptops, trips, and internships, with 2026/27 accommodation available to offer holders.
vg-resource.com
The VG Resource provides educational videos, lessons, tutorials, or self-learning resources.
thecmb.org
TheCMB is a WebGL visualization of raw data from the Planck mission showing intensity fluctuations in the cosmic microwave background. The data is tiled over a sphere using the Healpix scheme, with up to 50 million pixels at the highest resolution, and the view can be controlled with the mouse and keyboard.
thedailyidea.org
The Daily Idea collects philosophy resources from across the internet, including free online articles, videos, podcasts, books and quotes. It also offers collections of philosophy course syllabi and reading lists on many topics.
theoi.com
The Theoi Project is a free reference site exploring Greek mythology and the gods in classical literature and art. It profiles each deity and creature on separate pages with encyclopedia summaries, quotations from ancient Greek and Roman texts, and illustrations from ancient art. The site also offers family trees, a bestiary, and a gallery of ancient artworks.
theskylive.com
TheSkyLive provides information about celestial objects and tools for exploring and observing the night sky. It includes star maps, a 3D Solar System viewer, visibility listings for planets, comets and asteroids, and guides to eclipses and the Moon. Users can set an observing location, and without one the site defaults to Greenwich.
thoughtmaybe.com
Thought Maybe is a site presenting documentary films on topics including corporate power, media, surveillance and politics. Featured titles include The Century of the Self, The Trap and The Power of Nightmares.
ti84calc.com
The TI 84 Calculator Online is an independent third-party free online graphing calculator simulator. It mimics TI-84 Plus and TI-84 Plus CE models, providing graphing, scientific calculation and subject-specific tools for algebra, geometry, statistics, precalculus and calculus directly in a browser with no downloads or installation required.
av.tib.eu
The TIB AV-Portal is a platform for scientific videos and audios in fields including technology/engineering, architecture, chemistry, information technology, mathematics and physics. It offers services such as quoting scientific videos with persistent identifiers, curating personal film programmes, publishing videos and producing videos with support. Content includes lecture series and digitised film collections.
ticalc.org
TICalc provides educational videos, lessons, tutorials, or self-learning resources.
tiger-algebra.com
Tiger Algebra provides educational videos, lessons, tutorials, or self-learning resources.
merriam-webster.com
Time Traveler provides educational videos, lessons, tutorials, or self-learning resources.
youtube.com
Timed Figure Poses is a YouTube video, playlist, or channel resource for watching related tutorials or media.
duostories.org
Tok2 En provides educational videos, lessons, tutorials, or self-learning resources.
tokipona.org
Toki Pona is a constructed language with 120–140 basic words, created by Sonja Lang in 2001. The official site describes it as free for everyone and links to learning resources, videos, texts and community information. It also covers Sitelen Pona, the language's writing system.
tokureo.maori.nz
Tōku Reo is the official website for a Te Reo Māori language learning television series based on the Te Whanake course. It covers five series and offers interactive exercises, podcasts and a forum. The half-hour show broadcasts on Māori Television at 7pm Monday to Friday.
tonybela.com
Tony Bela is an illustrator, graphic designer and cartoonist who produces infographics, including space-themed posters covering NASA, SpaceX and Starship missions. Some infographics are offered free for educational and non-profit projects, with high-resolution downloads available through Patreon.
topuniversities.com
Top Universities provides educational videos, lessons, tutorials, or self-learning resources.
toph.co
Toph.co provides educational videos, lessons, tutorials, or self-learning resources.
tour.go.dev
Tour Go provides educational videos, lessons, tutorials, or self-learning resources.