HamExam.org offers free practice exams and flash cards for the Technician, General, and Amateur Extra amateur radio question pools. The site was built in 2003 and requires no sign-up for practice; a free account adds question prioritization and progress tracking across sessions.
Listudy is a free and open source chess training site that uses spaced repetition to help users memorize openings, train tactics, and practice endgames against Stockfish. It also offers blind tactics, where the board shows a position from several moves earlier, and pieceless tactics, where an empty board is accompanied by a list of piece locations. The source code is available on GitHub.
F2L Trainer is an educational resource for documentaries, courses, books, reference material, or self-learning.
The Acaeum is an educational resource for documentaries, courses, books, reference material, or self-learning.
#fretflip is an online tool for creating and sharing guitar fretboard charts, and for exploring the fretboard. Content can be edited in a what-you-see-is-what-you-get manner, and shared charts are stored in the cloud and accessed by anyone in any browser using a generated URL.
A wiki collecting open source hardware, do-it-yourself biohacking, and practical human enhancement engineering projects, which together could be called transhumanism. Most of the wiki organizes and summarizes developments from publicly available hplusroadmap IRC chat logs since 2008. Topics include longevity, genetic engineering, nootropics, cryonics, and do-it-yourself biology.
Piano Scribe is a web application that converts raw audio to MIDI using Onsets and Frames, a neural network trained for polyphonic piano transcription. Users can record themselves playing piano or choose a solo piano audio file from their device. All processing happens locally in the browser using Magenta.js and TensorFlow.js.
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Listudy is a free and open source chess training site that uses spaced repetition to help users memorize openings, train tactics, and practice endgames against Stockfish. It also offers blind tactics, where the board shows a position from several moves earlier, and pieceless tactics, where an empty board is accompanied by a list of piece locations. The source code is available on GitHub.
F2L Trainer is an educational resource for documentaries, courses, books, reference material, or self-learning.
The Acaeum is an educational resource for documentaries, courses, books, reference material, or self-learning.
#fretflip is an online tool for creating and sharing guitar fretboard charts, and for exploring the fretboard. Content can be edited in a what-you-see-is-what-you-get manner, and shared charts are stored in the cloud and accessed by anyone in any browser using a generated URL.
A wiki collecting open source hardware, do-it-yourself biohacking, and practical human enhancement engineering projects, which together could be called transhumanism. Most of the wiki organizes and summarizes developments from publicly available hplusroadmap IRC chat logs since 2008. Topics include longevity, genetic engineering, nootropics, cryonics, and do-it-yourself biology.
Piano Scribe is a web application that converts raw audio to MIDI using Onsets and Frames, a neural network trained for polyphonic piano transcription. Users can record themselves playing piano or choose a solo piano audio file from their device. All processing happens locally in the browser using Magenta.js and TensorFlow.js.
