Anki
apps.ankiweb.net
Schedules flashcard reviews for the day before you would have forgotten them
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Research, write, cite, submit — without buying anything.
23 sites in this collection
apps.ankiweb.net
Schedules flashcard reviews for the day before you would have forgotten them
coggle.it
Mind maps that stay readable as branches multiply
datasetsearch.research.google.com
Finds published datasets across repositories, governments and journals
docs.google.com
Several people typing in one document without overwriting each other
scholar.google.com
Searches academic papers and shows who has cited each one since
hemingwayapp.com
Highlights the sentences nobody is going to finish reading
instapaper.com
Saves an article for later and strips it down to just the text
khanacademy.org
Explains school maths and science one short video and one exercise at a time
markmap.js.org
Turns a Markdown outline into a collapsible mind map as you type
ocw.mit.edu
Publishes the real lecture notes, problem sets and exams from MIT courses
notebooklm.google.com
Summarises only the sources you upload, and cites the exact passage
notion.com
Builds a workspace out of pages and databases instead of a folder of files
openstax.org
Peer-reviewed university textbooks you can read online or download as PDFs
otranscribe.com
Play the audio and type the transcript in the same window
ourworldindata.org
Long-run global data on health, energy and poverty, free to reuse
overleaf.com
Write LaTeX in a browser and watch the typeset PDF update beside it
perplexity.ai
Answers a question by searching the web and footnoting every claim
pomofocus.io
A 25-minute timer with a task list and nothing else on the screen
gutenberg.org
Seventy thousand out-of-copyright books as clean EPUB, Kindle and plain text
quillbot.com
Rewrites a sentence you cannot get right into several alternatives
web.archive.org
Shows you what a web page looked like on a date in the past
when2meet.com
Paint your free hours on a grid and watch the group overlap darken
zbib.org
Turns a URL, DOI or ISBN into a formatted citation in any of 10,000 styles