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.
457 tools in Notes & knowledge bases · A to Z, so position is not a ranking
- Notes & knowledge bases
Notra
Notra is a private Markdown notes app for Mac, iPhone and iPad that keeps notes as portable files you own.
- 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.
- 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.
- Notes & knowledge bases
OktoNote
OktoNote is an AI note taking app that turns text, voice recordings, photos and documents into organized notes.
- 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.
- 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.
- Notes & knowledge bases
Opensidian
Opensidian is an open-source Linux app that opens your existing Markdown vault with wikilinks, backlinks and a graph view.
- Notes & knowledge bases
Orange Cat
Orange Cat is a native Markdown notebook for Mac, iPad and iPhone to write, preview, organize and keep note versions.
- Notes & knowledge bases
Orgzly
Orgzly is an Android notes and to-do outliner using org mode notebooks synced with folders on the device.
- Notes & knowledge bases
Original
original is an editor that adds outline mode, backlinks, Markdown shortcuts and a formatting toolbar to the Apple Notes you already have.
- Notes & knowledge bases
Outline
Outline is a team wiki for internal documentation, specs, meeting notes and onboarding material.
- Notes & knowledge bases
Paper
Paper is a free notes app with notebooks and checklists for Android, iPhone and Mac.
- Notes & knowledge bases
Papyrs
Papyrs is an intranet and team wiki tool for small companies to share documents and company information.
- Notes & knowledge bases
PBworks
PBworks is a team wiki for capturing knowledge, sharing files and managing projects in one workspace.
- Notes & knowledge bases
PeekMark
PeekMark is a local-first Markdown viewer for Mac with Finder Quick Look previews, workspaces, search and backlinks.
- Notes & knowledge bases
Penbook
Penbook is an iPad app of digital paper notebooks with templates for notes, planning and bullet journaling.
- Notes & knowledge bases
Pencora
Pencora is a free iPad handwriting notebook that renders typed text in your own handwriting and searches everything you wrote.
- Notes & knowledge bases
Pentip
Pentip combines notes, PDF markup, flashcards and whiteboards in one handwriting-aware notebook for iPad, iPhone and Mac.
- Notes & knowledge bases
Personal Knowbase
Personal Knowbase is a Windows notes database that indexes free-form notes and ideas by keywords for later lookup.
- Notes & knowledge bases
PHPKB
PHPKB is knowledge base software for internal teams and customers, with AI-assisted search and answers, offered with a 30-day free trial.
- Notes & knowledge bases
Pinpal Notes
Pinpal Notes is a notes app for Apple devices with folders and checklists that Claude or ChatGPT can connect to.
- Notes & knowledge bases
Pinto Notes
Pinto Notes is an iPhone and Mac notes app where ChatGPT, Claude and other AI tools can read and edit your notes.
- Notes & knowledge bases
Plain Org
Plain Org brings Org mode notes and tasks to iOS, built as a personal project by one developer.
- Notes & knowledge bases
Plainpad
Plainpad is a free, open-source note-taking app that you host yourself, with quick search and synced notes.
- Notes & knowledge bases
Planist AI
Planist AI is a notes and task app where typed or spoken thoughts are organized by AI into tasks and reminders.
- Notes & knowledge bases
Plume
Plume is a free lightweight macOS app for taking quick notes from the menubar.
- Notes & knowledge bases
PmWiki
PmWiki is a wiki engine for building collaborative websites and documentation without a database.
- Notes & knowledge bases
Pocketlyne
Pocketlyne is a native iPhone and Android app for reading, searching and editing an Outline wiki you already run.
- Notes & knowledge bases
Project Snippets
Project Snippets is a Mac app that organizes code snippets by project and language, with search and reusable named placeholders.
- Notes & knowledge bases
Prompt Journal
Prompt Journal is a notes app for people who write prompts all day, with a reusable prompt library and task tracking.
- Notes & knowledge bases
PromptPaste
PromptPaste is a Mac, iPhone and iPad app for saving, organizing and quickly pasting AI prompts with variables and sync.
- Notes & knowledge bases
ProNotes
ProNotes extends Apple Notes with extra features so people who already use the built-in app get more from it.
- Notes & knowledge bases
ProProfs Knowledge Base
ProProfs Knowledge Base builds public or private knowledge bases with AI that writes and improves articles, aimed at deflecting support tickets.
- Notes & knowledge bases
Protected Text
ProtectedText is a free online notepad that encrypts notes with a password, with no login or ads.
- Notes & knowledge bases
Qiita Team
Qiita is a Japanese platform where engineers write and share programming notes and tips.
- Notes & knowledge bases
QOwnNotes
QOwnNotes is an open-source Markdown note-taking app for Linux, macOS and Windows that syncs with Nextcloud.
- Notes & knowledge bases
Quick Notes
Capture is an always-open field for quick notes, tasks, links and reminders across iPhone, iPad, Mac, Watch and Vision Pro.
- Notes & knowledge bases
QuickMark
QuickMark is a small Markdown viewer and editor for Mac, iPhone and iPad that renders code, math and diagrams on open.
- Notes & knowledge bases
Raven
Raven is a native Markdown notes app for Mac, iPhone and iPad that stores notes, journal entries and tasks as plain files.