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Show HN: A rich, HTML-native document canvas for human <> AI collaboration

https://app.productnow.ai/app/home
2•kadhirvelm•1h ago
We've spent the last several months iterating on a rich, HTML-native document canvas. We kept finding we wanted a shared space where we could work on a written artifact with our team while getting some AI assistance along the way.

Lots of interesting and challenging problems when designing a document editor that allows many humans and agents to understand and edit simultaneously. Especially one that supports things like Mermaid diagrams and XYZ flow charts out of the box!

We're officially GA, would love for people to give it a shot and tell us what they think. Feedback is greatly appreciated! If people want more credit, shoot us a note (hello@productnow.ai), we're happy to support :)

LM/LSTS inference-injected garbage collection programming language

https://medium.com/@andrew_johnson_4/lm-lsts-hits-major-mid-stabilization-milestone-with-release-...
1•DoubleDecoded•3m ago•0 comments

Reaching 10⁻⁶ mbar for my homemade electron microscope [video]

https://www.youtube.com/watch?v=Ku04_mVZx_E
1•Audiolite•3m ago•0 comments

Epiplexity

https://andys.blog/epiplexity/
1•andytratt•7m ago•0 comments

The Cheapest Mercy

https://protortyp.github.io/posts/the-cheapest-mercy/
2•protortyp•7m ago•0 comments

Building self-improving tax agents with Codex

https://openai.com/index/building-self-improving-tax-agents-with-codex/
1•gmays•12m ago•0 comments

Google pushes water standards amid data center backlash

https://www.axios.com/2026/06/03/google-pushes-water-standards-data-center-backlash
1•1vuio0pswjnm7•13m ago•3 comments

Show HN: AI Agent that resolves all your support issues

1•Daniel-Pan•13m ago•0 comments

American capitalism has taken an apocalyptic turn

https://economist.com/business/2026/06/03/american-capitalism-has-taken-an-apocalyptic-turn
2•andsoitis•13m ago•0 comments

American Fork PD posts and removes unredacted bodycam footage

https://old.reddit.com/r/RecklessBen/comments/1tvzfv9/american_fork_pd_unredacted_bodycamdashcam_...
2•cosmicgadget•17m ago•0 comments

Strategic Petroleum Reserve

https://www.energy.gov/hgeo/opr/strategic-petroleum-reserve
1•mooreds•17m ago•0 comments

The Post That Beat The News By 38 Minutes. [video][50 mins]

https://www.youtube.com/watch?v=b2VAiFBXz-E
1•Bender•19m ago•0 comments

DOJ investigating former congressman George Santos for insider trading on Kalshi

https://www.npr.org/2026/06/02/nx-s1-5843371/george-santos-kalshi-insider-trading-investigation
2•gnabgib•22m ago•0 comments

SpaceX wins tax exemption for $55B AI chip plant despite local backlash

https://www.ft.com/content/86b2440a-60ce-4a5b-94ba-a6a4456ae574
1•1vuio0pswjnm7•23m ago•0 comments

Sil Val was built on public money-now it's fighting California's billionaire tax

https://www.morningstar.com/news/marketwatch/2026060256/silicon-valley-was-built-on-public-money-...
1•initramfs•23m ago•0 comments

Postgres IDE in Cursor

https://techcommunity.microsoft.com/blog/adforpostgresql/your-postgresql-workflow-just-found-its-...
1•gen_tp•23m ago•0 comments

Scientists uncover Feynman's formula for finding best holiday restaurant

https://www.theguardian.com/science/2026/jun/01/scientists-uncover-feynmans-formula-for-finding-b...
1•paulpauper•25m ago•0 comments

How cowboy culture remade Brazil

https://thebaffler.com/outbursts/rodeo-clowns-cowie
1•paulpauper•25m ago•0 comments

Are India's GDP figures OK after all?

https://www.ft.com/content/28783a0c-5a7c-4d6b-9485-61bdcb06e83d
2•paulpauper•25m ago•1 comments

Large AI Models in Dental Healthcare

https://arxiv.org/abs/2606.02914
1•berlianta•25m ago•0 comments

Meta Is Reportedly Working on an AI Pendant and More Smart Glasses

https://www.engadget.com/2184224/meta-developing-ai-pendant-more-smart-glass-models/
1•gmays•31m ago•0 comments

Ask HN: What would justify writing a kernel in 2026?

1•alonsovm44•32m ago•3 comments

Fridge with a Tiny Funnel Site

https://tailscale.com/blog/funnel-fridge
1•ChicknNuggt•33m ago•0 comments

The King and the Swarm

https://firstthings.com/the-king-and-the-swarm/
1•cratermoon•33m ago•0 comments

OpenAI Codex tool linked to malicious NPM supply chain attack

https://www.techradar.com/pro/security/openai-codex-tool-with-over-29-000-downloads-linked-to-mal...
1•ChicknNuggt•35m ago•0 comments

HttpBin Service

https://github.com/conductor-oss/httpbin
1•opiniateddev•37m ago•0 comments

Show HN: AI Gauge, a desktop monitor for Claude/Codex/Copilot usage limits

https://github.com/jpajak/ai-gauge
1•jpajak•39m ago•0 comments

Darknet Market Maximalism

https://antimoonboy.com/darknetmarketmaximalism/
2•Cider9986•45m ago•0 comments

Algebra of Contexts

https://github.com/neurons-me/.me
2•suiGn•50m ago•0 comments

Father of VR: The best AI future nobody is talking about – Jaron Lanier [video]

https://www.youtube.com/watch?v=v8f73ueeSTw
2•tartoran•52m ago•0 comments

Grok Becomes the Voice of Vapi

https://x.ai/news/grok-vapi
3•azeitona•55m ago•0 comments