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.
438 tools · A to Z, so position is not a ranking
- Notes & knowledge bases
Protected Text
ProtectedText is a free online notepad that encrypts notes with a password, with no login or ads.
- Whiteboards & mind maps
Proto.io
Proto.io is a browser tool for building interactive web and mobile app prototypes without code and sharing them for testing.
- Screenshots & capture
PurrSnapper
PurrSnapper is a macOS screenshot app for capturing, marking up with arrows or text, blurring sensitive details and sharing.
- Read-later & research
Quick Reads
Quick Reads saves articles for clean reading with highlights and delivers newsletters and episodes into the same library.
- Screenshots & capture
QuikGIF
QuikGIF records any region of a Mac screen as a GIF from the menubar, with no time limit.
- Read-later & research
Raindrop.io
Raindrop.io is a bookmark manager for collecting links, articles and media into folders across devices.
- Whiteboards & mind maps
Ramus
Ramus is a mind map and outline app for Mac, iPad and iPhone with a free tier and a one-time Pro purchase.
- Read-later & research
Rayyan
Rayyan is a platform for systematic and literature reviews that helps screen, deduplicate and organize studies.
- Read-later & research
Readbase
Readbase gives each reader a dedicated address for newsletters and uses AI to summarize each issue and answer questions.
- Read-later & research
ReadEra
ReadEra is a reading app for books, magazines and documents with notes, quotes and sharing.
- Read-later & research
Readstow
Readstow stores saved articles, followed sites and newsletters on your device so you can read them offline without ads or algorithms.
- Read-later & research
Readwise Reader
Readwise Reader is a read-later app for saving articles, PDFs and newsletters, searching them and highlighting passages in one place.
- Read-later & research
Recall
Recall summarizes YouTube videos, podcasts, PDFs and articles and saves them to a searchable knowledge base.
- Read-later & research
ReClipped
ReClipped is a browser extension for taking notes on online videos, saving timestamps and screenshots to learn from them later.
- 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.
- 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.
- 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
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.
- 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
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.
- 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
Safe & Informed
Safe & Informed is a private news reader that collects your RSS sources and podcasts, reads stories aloud, and offers a daily briefing.
- Notes & knowledge bases
Saga AI
Saga is a collaborative workspace that combines notes, docs and tasks with AI to organize team knowledge.
- Read-later & research
Save
Minibase is a Chrome extension that clips web pages, YouTube, Reddit and docs into clean Markdown for AI assistants and Obsidian.
- Read-later & research
Save to Notion
Save to Notion is a web clipper that saves web pages into Notion for later reading.
- Read-later & research
SaveIt
SaveIt is a utility for saving links and short notes from any app, keeping them in one private place synced across Apple devices.
- Notes & knowledge bases
Scholium
Scholium is an AI notes workspace for founders and vibe coders that surfaces repeated risks and open questions from past notes.
- Read-later & research
Scienze
Scienze turns papers, books, articles and reports into cards you swipe through, with plain-language explanations on mobile and in Chrome.
- Read-later & research
SciSummary
SciSummary is an AI tool that summarizes scientific articles for researchers and students.
- Read-later & research
Sciwheel
Sciwheel is a reference manager for discovering, reading, annotating and citing scientific papers.
- Screenshots & capture
Screen Index
Screen Index lets you search Mac screenshots by clues you remember, file new captures quickly and edit while keeping originals.
- Screenshots & capture
ScreenCandy
ScreenCandy takes a screenshot shared to it and returns it with a background, rounded corners and shadow, processed on-device.
- Screenshots & capture
ScreenPal
ScreenPal is a screen recorder and video editor for capturing, editing and sharing videos and images online or on desktop.
- Screenshots & capture
Screenshot Bro
Screenshot Bro is a native Mac, iPad and iPhone tool for creating store screenshots with device frames, localization and batch export.
- Screenshots & capture
Screenshot Studio
Screenshot Studio is a Mac and iOS app for building App Store screenshots, translating them with AI and uploading to App Store Connect.
- Screenshots & capture
Screenshot Swipe
Screenshot Swipe is an iPhone app that adds AI notes and tags to your screenshots and gives you a two-minute daily review.
- Screenshots & capture
ScreenVerb
ScreenVerb is a Mac screenshot and annotation app that is free to start, with a one-time Pro upgrade for Mac, iPhone and iPad.
- Whiteboards & mind maps
Scribe Animator
Scribe Animator is an explainer animation studio for creating whiteboard videos with screen recording, local voiceover and AI help.
- Screenshots & capture
ScrollShot
ScrollShot records a scroll and stitches the frames into one long full-page screenshot, also joining photos into a single image.
- Notes & knowledge bases
Second Brain
Second Brain is a local-first iOS app where you capture thoughts by text or voice and AI classifies and organizes them.
- Read-later & research
Seconded
Seconded saves links from Chrome, Firefox, Safari and iOS into one searchable list so articles and ideas are not lost.
- Read-later & research
Semantic Scholar
Semantic Scholar is a free research tool that uses AI to help scholars search and understand scientific literature.
- Screenshots & capture
ShareX
ShareX is a free open-source Windows tool that captures or records your screen and shares it with one shortcut.
- Read-later & research
Sharly
Sharly is an AI assistant that summarizes, compares and checks sources across documents for individuals and teams.