Anki
apps.ankiweb.net
Schedules flashcard reviews for the day before you would have forgotten them
Free account
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askeet.com
Community questions and answers ranked by member voting.
Use Wikipedia instead
Gets you oriented on almost any subject, with the sources listed at the bottom. Quality varies enormously by topic and language, and it is a starting point rather than a citable source.
Open WikipediaA question-and-answer community with reputation-weighted voting, built as a public demonstration of a PHP framework and better designed than most commercial equivalents of its day. It could not reach the critical mass that makes a Q&A site useful, which is the fate of nearly every site whose value is other people. It is gone.
Questions
No. Askeet is no longer running and askeet.com does not serve the tool any more. Wikipedia is the closest current equivalent — it gets you oriented on almost any subject, with the sources listed at the bottom.
Yes. Askeet sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
No longer operating; the archive of answers is not preserved anywhere.
Alternatives
Same category or same task, ordered by how closely they overlap.
apps.ankiweb.net
Schedules flashcard reviews for the day before you would have forgotten them
exercism.org
Practice exercises in 80-odd languages with free feedback from a human mentor
freecodecamp.org
Teaches web development by making you write code in the browser from lesson one
khanacademy.org
Explains school maths and science one short video and one exercise at a time
desmos.com
Type an equation and watch the curve, with a slider for every parameter
duolingo.com
Turns a language into five-minute daily drills you will actually keep doing