// category · 11 tools · 1 open source
Notes & Knowledge
Note-taking and reading apps that use AI to organise what you save, connect related ideas and answer questions from your own knowledge.
Reflect Openreflect.appOpen-source, local-first Markdown notes with daily notes and backlinks; free on Mac, paid on iPhone and iPad, with optional AI using your own API key.Notes & KnowledgeFreemium★ 1.6k
wallabagwallabag.orgOpen-source, self-hostable read-it-later app with mobile, browser and e-reader support, plus a hosted wallabag.it service run by the project.Notes & KnowledgeOpen source★ 13k
Instapaperinstapaper.comLong-running read-it-later app that saves articles for clean reading on web, iOS and Android; Premium adds search, a permanent archive and AI voices.Notes & KnowledgeFreemiumHN 2
Capacitiescapacities.ioObject-based notes app where people, books and ideas become linked objects, with an optional AI assistant.Notes & KnowledgeFreemium
Gemini Notebooknotebook.googleGoogle's source-grounded research notebook, formerly NotebookLM. It answers from your uploads with citations and builds flashcards, quizzes and audio overviews.Notes & KnowledgeFreemium
Heptabaseheptabase.comVisual note-taking app for researching and learning on whiteboards of linked cards, with AI chat over your sources.Notes & KnowledgePaid
Mattergetmatter.comRead-later app for iPhone, iPad and the web that gathers articles, newsletters and PDFs, with natural text-to-speech and quick highlighting.Notes & KnowledgeFreemium
Memget.mem.aiSelf-organising notes app that surfaces related notes and answers questions from what you have saved.Notes & KnowledgeFreemium
Notion AInotion.comAI built into Notion for searching your workspace, drafting docs, summarising pages and taking meeting notes.Notes & KnowledgeFreemium
Raindrop.ioraindrop.ioBookmark manager with unlimited free bookmarks and collections across devices; Pro adds full-text search, permanent page copies and backups.Notes & KnowledgeFreemium
Readwise Readerreadwise.ioRead-it-later app for articles, PDFs, newsletters and feeds, with an AI reading companion and highlight syncing.Notes & KnowledgePaid