Alternatives to Polywise

Notion is an AI workspace where docs, wikis, databases and autonomous agents share one system of record.

Khoj is an open-source AI second brain that turns your documents and the web into private, queryable agents you can self-host.

Dim0 is an open-source collaborative AI canvas where notes, mini-apps, and agents share one infinite board.

Open-source macOS app that captures your screen activity and turns it into a searchable, on-device memory timeline.

Open-source, Markdown note-taking app with backlinks, daily notes, local files, and an MCP server that lets Claude and Codex read and edit your notes.

MyMemo AI turns saved links, PDFs, videos and voice recordings into a searchable second brain you chat with.

Ophel adds a real-time smart outline, chat folders, and a prompt library to 15 AI chat platforms — free, open source, local-first.

Shared context board where product teams and their AI agents reason over the same evidence, decisions, and taste.

Tabula turns Markdown folders into versioned, API-readable knowledge units for people and AI agents.

Open-source, self-hosted AI bookmark manager that auto-summarizes and tags what you save, then lets you query it in natural language.

Open-source, self-hosted LLM wiki that compiles your raw sources into a maintained knowledge base

Free open-source browser extension that exports ChatGPT, Claude, Perplexity and Phind conversation threads into clean markdown files in one click.

AI voice notetaker for iPhone, Mac, and Apple Watch — talk, and Mumble turns it into notes, tasks, and ideas

Screenpipe records your screen and audio locally and turns that work history into searchable AI memory via MCP.

Heptabase is a visual knowledge base whose AI Tutor turns your PDFs, YouTube videos, and notes into guided study courses.

Glyph is a native macOS Markdown notes app that turns your existing .md folder into a linked workspace with Kanban boards, wikilinks, and

HyNote is an AI note taker that turns meetings, audio, PDFs, YouTube videos, and phone calls into searchable, chat-ready notes.

Glasp is a social web and PDF highlighter that turns your highlights into an AI memory you can chat with.

OttO is a local-first MCP memory server and knowledge graph that gives Claude Code and Cursor persistent agent memory.

Liminary is a Chrome-extension research memory that captures what you read and grounds client deliverables in your own sources.

Constella is an infinite-canvas memory layer that auto-links your notes so Claude, ChatGPT and Codex share the same context

BuildIn.AI pairs a docs, database, and mind map workspace with built-in paid subscriptions for your content.

Fabric CLI brings AI semantic search and persistent agent memory to your terminal.

Local-first AI agent that turns your files, meetings, and research into finished decks, sheets, and reports.

Workflowy turns notes and tasks into one infinite nestable bullet list, now with side-by-side Panes on desktop.

Copilot for Obsidian brings AI agents and semantic vault search to your second brain, on your own model keys or hosted models

Noted turns typed notes into a timestamped audio index — every line links back to the exact second it was spoken.

Twigg is a stateful LLM API that stores your conversation server-side and routes each request to Anthropic, OpenAI, Google, xAI, Fireworks

Notability turns handwritten notes and audio into AI summaries, quizzes, and flashcards on iPad, Mac, Android, and web.

Proactive AI second brain that organizes saved pages, PDFs, videos and tweets into guided learning Flows.