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.
126 tools in Notes & knowledge bases · A to Z, so position is not a ranking
- Notes & knowledge bases
Lumeo. Your second brain
Lumeo is a second brain app that captures thoughts by voice, links them in a constellation view and turns them into ideas.
- Notes & knowledge bases
Marko
Marko is a free native Markdown viewer for Mac, iPad and iPhone that renders tables, code, Mermaid and math offline.
- Notes & knowledge bases
MD Flow
MD Flow lets you browse, preview and revisit folders of Markdown files on Mac, iPhone and iPad, with a file-first design.
- Notes & knowledge bases
MDTree
MDTree is a Mac app that collects Markdown files from all your projects in one place for finding and writing notes.
- Notes & knowledge bases
Metis
Metis is a native local-first Markdown knowledge base for Mac, iPhone and iPad with linked notes, live preview and on-device AI.
- Notes & knowledge bases
Mindex
Mindex puts links, DOI articles, notes and code snippets on a visual map of cards that you group into projects.
- Notes & knowledge bases
MindMirror
MindMirror is a notes app where people drop thoughts, notes and files without folders, then ask questions and see connections between them.
- Notes & knowledge bases
Mindscope 2
Mindscope lets you capture thoughts freely, then gather and organize them into hierarchical groups and visual structures.
- Notes & knowledge bases
Mindverse
Mindverse saves notes, photos, recordings and articles and uses on-device AI to find them, keeping data in open file formats.
- Notes & knowledge bases
Mintofu
Mintofu is an all-in-one app combining notes, tasks, PDFs, mind maps and a calendar, with private on-device AI.
- Notes & knowledge bases
Moxn
Moxn is a knowledge base where teams edit docs and AI agents search, read and write them through MCP.
- Notes & knowledge bases
Musing Notes
Musing is a free private notes app for iPhone, Mac and Watch that recalls notes by place, time or a plain question.
- Notes & knowledge bases
MyMemo
MyMemo is a note app that saves knowledge and lets people chat with it using AI models.
- Notes & knowledge bases
myResearchQuill
myResearchQuill is a research notebook for students that collects sources, cites them in ten styles and records lectures on Apple devices.
- Notes & knowledge bases
MyZettel
MyZettel is an infinite note canvas for fleeting, permanent and literature notes linked into a knowledge network.
- Notes & knowledge bases
NexReader
NexReader renders .md files natively on iPhone, iPad and Mac, with headings, tables, code and task lists.
- Notes & knowledge bases
Notebook
Notebook is a Mac note-taking app with Apple Intelligence, AI meeting notes, quick capture and a Safari extension.
- Notes & knowledge bases
Notekpr
Notekpr offers end-to-end encrypted Markdown notes, drawings and live collaboration, hosted by them or self-hosted.
- Notes & knowledge bases
Notelane
Notelane is a free Markdown notes app for iPhone and iPad that stores notes as plain .md and .txt files wherever you choose.
- Notes & knowledge bases
Notelet
Notelet is a free notes and reminders app for Mac, Windows, Linux, iPhone, iPad, Android and the web.
- Notes & knowledge bases
NoteMagnet
NoteMagnet is an iOS visual notes app that arranges lists, meal plans and reminders on a fridge and corkboard canvas.
- Notes & knowledge bases
NoteNimbus
NoteNimbus keeps a single note always synced across iPhone, iPad and Mac, free to start with no account.
- 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
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
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
notetime
notetime is a free offline notes app that stamps every line with the time, suited to interstitial journaling and meetings.
- 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
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
OneMore
OneMore is a free add-in for Microsoft OneNote that adds extra editing and organizing features.
- 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
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
Pentip
Pentip combines notes, PDF markup, flashcards and whiteboards in one handwriting-aware notebook for iPad, iPhone and Mac.
- 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
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
Pocketlyne
Pocketlyne is a native iPhone and Android app for reading, searching and editing an Outline wiki you already run.
- 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
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
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.
- 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.