Kuku is back as an open-source, local-first second brain for the AI era. It keeps your knowledge in plain Markdown files, then turns your vault into reusable context: wikilinks, backlinks, graph, search, and AI-assisted edits with reviewable diffs. Unlike closed note apps or one-off AI chats, Kuku is built to make your memory portable across tools, models, and self-hosted setups.
Hey Product Hunt 👋 I’m Minkyu Lee, design engineer on Kuku.
Our first launch started as an Obsidian-like Markdown editor. Thanks to this community, we got a ton of attention, feedback, and energy from it.
Since then, we’ve been rebuilding Kuku almost from the ground up, many late nights included.
Kuku is now open source and moving toward something bigger: a local-first second brain that can become shared memory for your AI tools.
Think plain Markdown, wikilinks, graph, search, Cursor-style AI edits, and a Mem0-like memory layer — but open, hackable, and yours.
We’re still early, still shipping hard, and looking for people who want to help shape it: users, contributors, plugin builders, and anyone obsessed with AI context.
Would love your feedback, questions, and weirdest use cases.
About Kuku: open source on Product Hunt
“Your open-source, local second brain for every AI”
Kuku: open source launched on Product Hunt on May 8th, 2026 and earned 98 upvotes and 7 comments, placing #7 on the daily leaderboard. Kuku is back as an open-source, local-first second brain for the AI era. It keeps your knowledge in plain Markdown files, then turns your vault into reusable context: wikilinks, backlinks, graph, search, and AI-assisted edits with reviewable diffs. Unlike closed note apps or one-off AI chats, Kuku is built to make your memory portable across tools, models, and self-hosted setups.
On the analytics side, Kuku: open source competes within Text Editors, SaaS, Artificial Intelligence, GitHub and YC Application — topics that collectively have 567.6k followers on Product Hunt. The dashboard above tracks how Kuku: open source performed against the three products that launched closest to it on the same day.
Who hunted Kuku: open source?
Kuku: open source was hunted by Minkyu Lee. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Minkyu Lee