Think & Capture
1,447 verified tools in 4 sections. Pick a section, search, or filter by free plan and country.
Capture ideas, organize notes and build a searchable knowledge base. Explore note-taking apps, whiteboards, research tools and screen capture software.
1,447 tools · A to Z, so position is not a ranking
- Read-later & research
Recollect
Recollect is a bookmark manager that saves links from all platforms in one place so you can curate and find them later.
- Notes & knowledge bases
Reconfigured
Reconfigured is an AI notepad that captures raw notes, organizes them and lets knowledge workers chat with what they wrote.
- Screenshots & capture
Record it! :
Record it! records your iOS screen including games and other apps and lets you add video commentary and reactions.
- Screenshots & capture
Recorder.app
Recorder.app is a macOS screen capture and camera recorder with a one-time lifetime purchase option.
- Screenshots & capture
RecordScreen.io
RecordScreen.io records the screen directly in the browser with no installation needed.
- Notes & knowledge bases
Recto Notes
Recto Notes is a Mac and iPhone notes app that tracks tasks and plans written inside ordinary notes, so no separate list is needed.
- Read-later & research
Rectoly
Rectoly guides students through reading a research paper for the first time on iPad, in three passes.
- Screenshots & capture
Recven
Recven records the iPhone screen, lets you mark key moments by tapping an Apple Watch and covers private details before sharing.
- Read-later & research
Rediscover
Rediscover is a read-later app that brings back one, three or five saved pages each day, plus a Radar feed of fresh writing.
- Read-later & research
Reeder
Reeder is a reader app that gathers feeds, videos and podcasts into one timeline with synced unread state across devices.
- Screenshots & capture
Reel
Reel is a free screen recorder for iPhone, iPad and Mac that adds a face camera, with no watermark or time limit.
- Read-later & research
Reelmark
ReelMark saves Instagram Reels shared to it into searchable collections, with notes you add while scrolling and short summaries.
- Notes & knowledge bases
ReelNotes
ReelNotes is a notebook for filmmakers, editors and journalists that keeps notes synced to the timing of video and audio.
- Read-later & research
Reference Tracker
Reference Tracker helps writers, researchers and students keep track of the publications they cite or refer to in their work.
- Screenshots & capture
Refero
Refero is a collection of UI and UX screenshots from real web and iOS apps for design inspiration.
- Read-later & research
Refind
Refind is a service that sends a daily set of links picked to match a person's interests and lets them save the best ones.
- Notes & knowledge bases
Reflect
Reflect is a note-taking app with daily notes, backlinks and local Markdown files, free and open source on Mac.
- Screenshots & capture
RefShot
RefShot captures and annotates Mac screenshots, pins images on top, copies text with offline OCR and removes backgrounds.
- Screenshots & capture
RegionMirror
RegionMirror shows a selected part of your Mac screen as a normal window so you can share it in Teams or Zoom.
- Read-later & research
RelatedWorks
RelatedWorks organizes research literature, links notes together and generates LaTeX-ready related work sections on macOS and iOS.
- Screenshots & capture
Remarq
Remarq lets you attach a voice note to any screenshot, photo or video from the share sheet and search by what you said.
- Read-later & research
RemindLink
RemindLink saves links, sets reminders for them and creates QR codes on Android and iOS, free to use.
- Notes & knowledge bases
Remlo
Remlo is a native Mac, iPhone and iPad app that keeps notes, to-dos and habits together in one synced place.
- Notes & knowledge bases
RemNote
RemNote turns notes, PDFs and videos into flashcards, quizzes and summaries using spaced repetition for students.
- Screenshots & capture
Replay Recorder
Replay Recorder keeps a rolling buffer of your screen so you can save the last 15 to 90 seconds on demand.
- Read-later & research
resaw
resaw saves videos and links from Instagram, TikTok, YouTube and the web, imports your Instagram saved posts and files them on iPhone.
- Read-later & research
Research Linker
Research Linker lets you highlight across a folder of PDFs and builds one outline by your own topics, each entry linked to its source.
- Read-later & research
ResearchHub
ResearchHub is a platform where researchers share, review and fund scientific papers and discussions.
- Read-later & research
Researchist
Researchist is an academic PDF reader for Mac, iPad and iPhone that extracts metadata, outlines and summaries and links references.
- Read-later & research
ResearchRabbit
ResearchRabbit helps researchers find related papers, build citation maps and track research trends for literature reviews.
- Whiteboards & mind maps
Retrospected
Retrospected is a free retrospective board where engineering teams run sprint retrospectives together in real time.
- Whiteboards & mind maps
Retrotool
RetroTool is a simple online tool for running team retrospectives on shared boards.
- Whiteboards & mind maps
RFFlow
RFFlow is a drawing program for flowcharts, organization charts, and business diagrams on Windows.
- Notes & knowledge bases
Rho MD
Rho MD is a local-first Markdown app for reading, editing, linking notes and tracking time, with an AI assistant.
- Read-later & research
Riff
Riff is an iPhone news app that shows your chosen sources one story at a time, with one-tap AI summaries and a personalized feed.
- Notes & knowledge bases
RightNote
RightNote is a Windows note organizer that stores text, files, and links in a tree to tame information overload.
- Notes & knowledge bases
Rnote
Rnote is an open source app for sketching and taking handwritten notes on desktop and tablets.
- Notes & knowledge bases
Roam Research
Roam Research is a note taking tool that links notes through backlinks and bulleted outlines to build a knowledge graph.
- Notes & knowledge bases
roamOS
roamOS adds quick capture, widgets, Spotlight and Siri to Roam Research on iOS and macOS for faster note entry.
- Notes & knowledge bases
Rook
Rook is a native Mac notes app for code you write or paste, with MCP so Claude and Cursor can save notes.
- Notes & knowledge bases
Roost
Roost is a companion app for bullet journalers that captures thoughts with BuJo signifiers to migrate to a paper notebook later.
- Whiteboards & mind maps
Roughout for Mac
Roughout for Mac is a native diagramming app that shares its file format with a free web version and costs a one-time fee.
- Read-later & research
RSS Brain
RSS Brain is a modern RSS reader that helps you take back control of how you consume information.
- Read-later & research
RSS Button for Safari
RSS Button for Safari is an app extension that discovers RSS, Atom and JSON feeds on a page and sends them to your news reader.
- Read-later & research
RSS feeds by mail
Feedlivery delivers posts from the blogs and RSS feeds you follow in one email each week or month.
- Read-later & research
RSS Mobile
RSS Mobile reads RSS, Atom and JSON feeds without third-party services, with feed groups, flagging, hiding and a simplified article view.
- Read-later & research
RSSOwl
RSSOwl is a desktop application for subscribing to, organizing and searching news feeds.
- Read-later & research
RuSSell RSS
RuSSell is a native RSS, Atom and JSON reader for macOS, iOS and iPadOS with on-device Apple Intelligence and audio reading.