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
- Notes & knowledge bases
NotePlus
NotePlus is a native Markdown notes app for Apple devices and Windows that stores notes in your own cloud drive.
- Notes & knowledge bases
Noter
Noter is a fast native Mac Markdown editor with tabs, split panes and backlinks, written in Rust and drawn on the GPU.
- Notes & knowledge bases
Notes
Notes is a free note-taking app for Windows, Mac and Linux for jotting down and organizing thoughts.
- Notes & knowledge bases
Notes Writer
Notes Writer is a notebook app for iPad, iPhone and Mac covering handwriting, PDF annotation, voice notes and Markdown.
- Notes & knowledge bases
Notes.io
Notes.io is a free web note-taking app for writing notes and sharing them with others.
- Notes & knowledge bases
Noteshelf
Noteshelf is a handwriting note-taking app for annotating documents, planning and keeping notes with AI features.
- Notes & knowledge bases
Noteship
Noteship is a Mac note-taking app that combines notes, todos and reminders in simple files.
- Notes & knowledge bases
NotesHub
NotesHub is a cross-platform Markdown note-taking app that keeps your files vendor-neutral and lets AI agents manage notes.
- Notes & knowledge bases
Notesmith
Notesmith is a local-only note app for iPhone, iPad and Mac that imports from Evernote and Apple Notes and keeps your data portable.
- Notes & knowledge bases
Notesnook
Notesnook is an open source note taking app with end-to-end encryption and apps for desktop, mobile and web.
- Notes & knowledge bases
NoteTab
NoteTab is a Windows text and HTML editor with tabs, clips, an outliner, and fast search and replace.
- Notes & knowledge bases
NoteTaker 5
NoteTaker is a macOS outliner with a book-style structure, iCloud sync, encryption and continuous indexing for organizing notes.
- Notes & knowledge bases
notetime
notetime is a free offline notes app that stamps every line with the time, suited to interstitial journaling and meetings.
- Notes & knowledge bases
Notewise
Notewise captures notes, recordings, PDFs and images in one place and uses AI to add structure and answers.
- Notes & knowledge bases
Notezilla
Concept World offers Sticky Notes, an app for putting digital sticky notes on the desktop on Windows, iPhone and Android.
- Notes & knowledge bases
Noticky
Noticky is a native Mac sticky notes app with always-on-top windows, app-aware notes, quick access and iCloud sync.
- Notes & knowledge bases
Notion
Notion is a workspace for notes, docs, databases and projects with AI features that teams and individuals use to organize work.
- Notes & knowledge bases
Notion AI
Notion AI adds search, writing and analysis features inside the Notion workspace for notes, docs and projects.
- Read-later & research
Notion Web Clipper
Notion Web Clipper saves any web page into a Notion workspace from the browser.
- Notes & knowledge bases
Notra
Notra is a private Markdown notes app for Mac, iPhone and iPad that keeps notes as portable files you own.
- Whiteboards & mind maps
novamind
Novamind is a mind mapping app for organizing ideas in an interactive visual map that starts from a central topic.
- Read-later & research
Now I Get It
Now I Get It converts an uploaded scientific paper into a shareable interactive web page that explains it in plain language.
- Read-later & research
NowComment
NowComment lets groups read and comment on texts, images and videos together, with threaded discussion inside shared documents.
- Notes & knowledge bases
nTilia
nTilia is an offline notes app for field journalists and researchers with on-device transcription, an encrypted vault and a citable journal.
- Notes & knowledge bases
Nuclino
Nuclino is a fast team workspace for writing docs, wikis and project notes that link together.
- Read-later & research
Nuggetize
Nuggetize summarizes any web link in seconds, lets you ask questions with AI and organizes your bookmarks.
- Notes & knowledge bases
Numbr
Numbr is a web calculator and notepad where notes and numbers sit together, also available as a Chrome extension.
- Notes & knowledge bases
nvUltra
nvUltra is a note-taking app with searchable, portable MultiMarkdown notes, currently in development by two long-time Mac developers.
- Notes & knowledge bases
Oaklet Notes
Oaklet Notes lets you type and handwrite in one note across desktop and mobile, with on-device encryption and no account.
- Notes & knowledge bases
Obsidian
Obsidian is a free note taking app that stores linked markdown notes locally for personal knowledge management.
- Notes & knowledge bases
Obsidian Copilot
Copilot for Obsidian adds AI agents inside Obsidian to search, organize and write notes, using models such as Claude and ChatGPT.
- Notes & knowledge bases
Octarine
Octarine is a private, markdown-based note taking app focused on speed and data ownership, with tasks and projects built in.
- Notes & knowledge bases
OctoNote
OctoNote is an iOS Markdown note-taking app that stores and syncs notes through GitHub.
- Read-later & research
Offprint
Offprint is a Safari extension that turns any web page into a clean PDF, EPUB or Markdown file in one tap.
- Read-later & research
OhMyStar
OhMyStar is a native Mac workspace for tagging, searching and reading your GitHub starred repositories.
- Notes & knowledge bases
OktoNote
OktoNote is an AI note taking app that turns text, voice recordings, photos and documents into organized notes.
- Read-later & research
Omamo
Omamo saves tabs, links, notes and YouTube videos from major browsers and iPhone into boards, with a free account.
- Screenshots & capture
omemo
omemo sorts iPhone screenshots automatically, works out what each one is for and sends reminders, such as for saved links.
- Screenshots & capture
OnDraw
OnDraw adds a drawing toolbar to any Mac app with arrows, boxes, step numbers and a spotlight cursor for recording tutorials.
- Whiteboards & mind maps
OneModel
OneModel is a diagramming tool for software engineers that routes arrows automatically and supports collaboration on architecture diagrams.
- Notes & knowledge bases
OneMore
OneMore is a free add-in for Microsoft OneNote that adds extra editing and organizing features.
- Notes & knowledge bases
Onetastic
Onetastic is an add-in for Microsoft OneNote that adds macros, extra formatting options and other features to the desktop app.
- Screenshots & capture
OnlineOCR
Online OCR converts images and scans into editable text or Word files using a free web converter.
- Read-later & research
Open Access Helper
Open Access Helper is a free browser extension and iOS app that finds legal open access versions of paywalled research articles.
- Read-later & research
Open Library
Open Library is an open catalog where readers find books, borrow digital copies and keep reading goals and lists.
- Whiteboards & mind maps
OpenBoard
OpenBoard is an open-source interactive whiteboard application for classrooms and presentations.
- Notes & knowledge bases
OpenKM
OpenKM is document management software for storing, searching and sharing company documents, with workflow automation and an open-source edition.
- Notes & knowledge bases
OpenMark
OpenMark opens Markdown files on Mac, iPhone and iPad with rendered Mermaid diagrams, math and syntax highlighting.