Products

11 products · Knowledge

OrganizationOwnershipSort

Product	Category	Organization	Ownership	Sponsor rank
Anki Spaced-repetition flashcard software for desktop and mobile with shared decks and free cross-device syncing.	Knowledge	Solo-built	Community nominated	Unranked
CourseFacts Explore online courses, compare your options, and use trusted guides to choose the right learning path from Udemy, Coursera, Skillshare, and more.	Knowledge	Solo-built	Owner verified	Unranked
Duolingo Gamified language lessons with short daily exercises, speaking practice, and progress tracking across many languages.	Knowledge	Established company	Community nominated	Unranked
Evernote Note-taking and web clipping app with notebooks, tags, document scanning, and search across synced devices.	Knowledge	Established company	Community nominated	Unranked
Logseq Open-source outliner for personal knowledge management with bidirectional links, daily journals, and local storage.	Knowledge	Community	Community nominated	Unranked
Microsoft OneNote Free-form digital notebooks supporting typed text, handwriting, images, and audio, synced through Microsoft 365.	Knowledge	Established company	Community nominated	Unranked
Obsidian Local-first Markdown note app with linked notes, graph view, database-style Bases, and a large plugin ecosystem.	Knowledge	Bootstrapped	Community nominated	Unranked
Quizlet Study sets, flashcards, practice tests, and AI-generated study materials used by students and teachers.	Knowledge	Startup	Community nominated	Unranked
Readwise Highlight syncing and read-it-later reader that resurfaces saved passages from books, articles, and podcasts.	Knowledge	Bootstrapped	Community nominated	Unranked
Wikipedia Volunteer-written free encyclopedia in hundreds of languages, hosted and maintained by a nonprofit foundation.	Knowledge	Nonprofit	Community nominated	Unranked
Zotero Free reference manager that collects sources, stores PDFs, and generates citations and bibliographies.	Knowledge	Nonprofit	Community nominated	Unranked