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
Recall-It Notes
Recall-It Notes is an iPhone and iPad note-taking and personal information manager with search by terms and tags.
- Notes & knowledge bases
Reconfigured
Reconfigured is an AI notepad that captures raw notes, organizes them and lets knowledge workers chat with what they wrote.
- 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.
- Notes & knowledge bases
ReelNotes
ReelNotes is a notebook for filmmakers, editors and journalists that keeps notes synced to the timing of video and audio.
- Notes & knowledge bases
Reflect
Reflect is a note-taking app with daily notes, backlinks and local Markdown files, free and open source on Mac.
- 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.
- 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.
- Notes & knowledge bases
Saber
Saber is a handwriting-first notes app with encrypted sync across devices.
- Notes & knowledge bases
Saga AI
Saga is a collaborative workspace that combines notes, docs and tasks with AI to organize team knowledge.
- 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.
- Notes & knowledge bases
SciNote
SciNote is a cloud electronic lab notebook with inventory and compliance tools, and a free plan for individual use.
- Notes & knowledge bases
ScribblePad
ScribblePad is a free note app for Apple devices with Apple Pencil handwriting, PDF annotation and on-device handwriting search.
- 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.
- Notes & knowledge bases
Secret Notes
Secret Notes is a free encrypted Android notepad with PIN protection, no ads and no tracking.
- Notes & knowledge bases
Secure Notes
Secure Notes is a notes app that locks entries with Face ID or a passcode and keeps encrypted backups.
- Notes & knowledge bases
Serious Notebook
Serious Notebook is a private offline notebook for Apple Pencil handwriting and sketches on iPad, with typed notes on iPhone.
- Notes & knowledge bases
Seven
Seven is an iPhone second brain app for saving links, photos, notes and reels in one place with automatic tagging.
- Notes & knowledge bases
Shokonotes
Shokonotes finds and reads Markdown notes kept as plain files in a folder, on Mac and iPhone.
- Notes & knowledge bases
ShoutWiki
ShoutWiki hosts free wikis built on MediaWiki so anyone can start a community or personal wiki.
- Notes & knowledge bases
SideNotes
SideNotes keeps notes, tasks, links and snippets at the edge of the Mac screen so users can capture without switching apps.
- Notes & knowledge bases
SilverBullet
SilverBullet is an open-source Markdown note-taking tool that starts from a local folder of notes and can be extended with scripts.
- Notes & knowledge bases
Simple Sticky Notes
Simple Sticky Notes is a free Windows desktop app for jotting down sticky notes and reminders on the screen.
- Notes & knowledge bases
Simple Text Notes
Simple Text Notes is a minimal plain-text notes app for iPhone, iPad and Mac with automatic iCloud sync.
- Notes & knowledge bases
Simplenote
Simplenote is a free, lightweight notes app that syncs across iOS, Android, Mac, Windows, Linux and the web.
- Notes & knowledge bases
Skein Notes
Skein Notes is a native Mac app that manages Markdown notes in a folder for things you are learning and working on.
- Notes & knowledge bases
Slab
Slab is a knowledge base and wiki tool where teams write, organize and search internal documentation.
- Notes & knowledge bases
SlashNote
SlashNote is a macOS menu bar notes app with several ways to create notes, local voice input and an AI assistant.
- Notes & knowledge bases
SlimWiki
SlimWiki is a minimalist wiki for teams and individuals to write and share knowledge collaboratively, with free sign-up.
- Notes & knowledge bases
Slips
Slips is a notes app for iPhone, iPad and Mac built around five focused notes instead of folders and piles.
- Notes & knowledge bases
Slite
Slite is a team knowledge base that keeps company docs and answers organized, with AI search over connected tools.
- Notes & knowledge bases
smalltype
smalltype is a fast Markdown notes app where each note is a plain file, suited to quick and long entries alike.
- Notes & knowledge bases
Smart Connections
Smart Connections is a set of Obsidian plugins that surfaces related notes with local embeddings and adds AI chat and lookup.
- Notes & knowledge bases
Smart Sticky Notes
Smart Sticky Notes is a Mac sticky notes app for capturing ideas quickly and syncing them across devices.
- Notes & knowledge bases
Smolpad
Smolpad is a small Markdown notes app for Apple devices that stores each note as a plain text file.
- Notes & knowledge bases
SnipperApp 3
SnipperApp 3 is a macOS code snippet manager that exposes snippets to Claude and Cursor through MCP and has a Raycast extension.
- Notes & knowledge bases
Snippets
Snippets is a fast Markdown note-taking app that keeps notes as .md files on your device and never uploads them.
- Notes & knowledge bases
SnippetsLab
SnippetsLab is a Mac code snippet manager that keeps snippets and notes organized and easy to find.
- Notes & knowledge bases
SNote
SNote is an end-to-end encrypted workspace for notes, files, docs and databases with collaboration.
- Notes & knowledge bases
Socratus
Socratus is an iOS notes app with structured notes, smart tables and AI connectivity through MCP integration.
- Notes & knowledge bases
SoundNote
SoundNote records audio while tracking what you type and draw, so tapping a note plays the matching moment.
- Notes & knowledge bases
Sova
Sova is a company knowledge base where teams organize internal documentation, search it quickly, and get notified of changes.