Zirn
Everything you know, in context.
Zirn launched on June 23, 2026 with 4 votes, #3,322 of 22,647 launches that month and more than 75% of that year's launches.
What it does
Most AI note-taking apps are glorified chatbots attached to documents. Zirn is designed to understand why information matters. It transforms scattered notes, research papers, web articles, and ideas into a connected knowledge system where AI understands context, relationships, and user intent. With local-first storage, personalized memory, knowledge-aware reasoning, and a dynamic Home that evolves with your vault, Zirn helps users build knowledge instead of managing folders.
Zirn hero site
Zirn keeps your knowledge structured on your device and uses AI to help you search, summarize, recall, and get source-grounded answers across your own files. When you add PDFs, articles, and notes, Zirn keeps more than the files. It keeps how they connect, what you were working on, and why they mattered. At the center is the .brain file — the system that links your notes, sources, preferences, and relationships so you can pick up where you left off without starting over. Most note-taking apps leave you with a collection of pages. Zirn turns them into a living knowledge base. As your vault grows, Zirn continuously compiles summaries, maps relationships between ideas, and builds a Home page…from zirn.app
Does a similar job
all alternatives →
Saner.AI2024 · saner.ai · ▲677Initially, we thought about this feature due to a bug in our chat interface. And surprisingly, I noticed that POE has just released the same feature. But the distinction is: with us the Multi-bot is designed to streamline the notetaking/working experience -> It allows user to search for external knowledge without switching context Though we are still in the beta phase, I would love to hear your thought/feedback on it :)
Findr: remember everything2024 · usefindr.com · ▲434Unlock infinite digital memory with your (AI) second brain
More work this month
the category →
Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.
Work · 25d ago · loficities.com
Smooth Recorder▲257Mac screen recordings that look edited when you hit stop
Work · 19d ago · smoothrecorder.com
Work · 13d ago · readrare.com
Source: Product Hunt launch ↗
Launched alongside, June 2026
the whole month →
Fundraisly▲1,537AI fundraising agent that finds investors and books meetings
AI · Jun 2026 · fundraisly.com
Homebrew 6.0.0▲1,481Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!
Dev tools · Jun 2026 · brew.sh
Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!
Life & fun · Jun 2026 · vorpus.github.io
Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.
Life & fun · Jun 2026 · hackernewstrends.com