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Show HN: Sleep Calculator – A tool to calculate ideal sleep/wake times

https://sleepcalculatorapp.com
1•loocao•4h ago
I built Sleep Calculator to help people improve sleep quality by aligning with natural 90-minute sleep cycles. You can either:

Enter your desired wake-up time to get ideal times to fall asleep, or

Enter your bedtime to find optimal wake-up times.

NanoVMs

https://nanovms.com/
1•udev4096•36s ago•0 comments

Making zero false positive SAST a reality

https://semgrep.dev/blog/2025/making-zero-false-positive-sast-a-reality-with-ai-powered-memory/
1•wslh•1m ago•0 comments

Jump from Windows 10 to Linux gets easier with KDE Plasma 6.4

https://www.zdnet.com/article/your-jump-from-windows-10-to-linux-gets-easier-with-kde-plasma-6-4/
1•CrankyBear•1m ago•0 comments

Q Value

https://rohitgupta.in/blog/2025/06/25/q-value/
1•gogo61•1m ago•0 comments

Better Auth, a TypeScript authentication library, raises $5M from Peak XV, YC

https://techcrunch.com/2025/06/25/this-self-taught-ethiopian-dev-built-an-authentication-tool-and-got-into-yc/
1•bundie•1m ago•0 comments

Sourcegraph: Changes to Cody Free, Pro, and Enterprise Starter Plans

https://sourcegraph.com/blog/changes-to-cody-free-pro-and-enterprise-starter-plans
1•CharlesW•4m ago•0 comments

JetBlue Offers 25 Years of TrueBlue Mosaic Status with Birthday Promotion

https://www.businesswire.com/news/home/20250625959406/en/JetBlue-Offers-25-Years-of-TrueBlue-Mosaic-Status-with-25-for-25-Birthday-Promotion
1•shlomo_z•5m ago•0 comments

Scales as Multipermutations of 0 and 1 into Twelve Places

https://www.petecorey.com/blog/2025/06/25/scales-as-multipermutations-of-0-and-1-into-twelve-places/
1•pcorey•5m ago•0 comments

Gemini CLI Review

https://simonwillison.net/2025/Jun/25/gemini-cli/
1•amrrs•6m ago•0 comments

How to run a million-board chess MMO in a single process

https://twitter.com/itseieio/status/1937904860508402150
1•samuel246•7m ago•0 comments

Syntax Diagrams

https://www.ibm.com/docs/en/ibm-mq/9.4.x?topic=reference-how-read-syntax-diagrams
1•amadeuspagel•7m ago•0 comments

Game Changing Ways AI Is Revolutionizing Recruiting Operations

https://www.reccopilot.com/blogs/6-game-changing-ways-ai-is-revolutionizing-recruiting-operations
1•Mukesh_dhal17•11m ago•1 comments

Mysterious Antibody in French Woman's Body. Turned Out to Be New Blood Type

https://www.smithsonianmag.com/smart-news/doctors-detected-a-mysterious-antibody-in-a-french-womans-body-it-turned-out-to-be-a-brand-new-blood-type-180986866/
1•ulrischa•12m ago•0 comments

Hans Niemann, One Year After the Chess Cheating Scandal (2024)

https://nymag.com/intelligencer/article/hans-niemann-chess-championship-cheating-scandal-interview.html
1•georgecmu•12m ago•0 comments

Show HN: I created Bill Organizer – manage bills and log payments

https://bill-organizer.com/
1•albertkag•13m ago•0 comments

Lower risk of dementia with AS01-adjuvanted vaccination

https://www.nature.com/articles/s41541-025-01172-3
2•tomsto•13m ago•2 comments

You've vibe coded an app. Now what?

https://stackoverflow.blog/2025/06/25/you-ve-vibe-coded-an-app-now-what/
1•ulrischa•14m ago•0 comments

Habits and Tools of Effective Remote Teams

https://www.jacobelder.com/2025/02/25/habits-and-tools-effective-remote-teams.html
2•jelder•19m ago•0 comments

Fast and reliable end-to-end testing for modern web apps – Playwright

https://playwright.dev/
1•ulrischa•19m ago•0 comments

The AI Agent schism: deterministic vs. non deterministic

https://writing.kunle.app/p/june-2025-the-ai-agent-schism
1•kunle•19m ago•0 comments

Claude Artifacts

https://claude.ai/artifacts
1•curtsmith•22m ago•1 comments

Warp 2.0: The Agentic Development Environment [video]

https://www.youtube.com/watch?v=k9BRhSbVSpI
2•handfuloflight•24m ago•0 comments

Do AI Code Review Tools Work, or Just Pretend?

https://redmonk.com/kholterhoff/2025/06/25/do-ai-code-review-tools-work-or-just-pretend/
2•mooreds•24m ago•0 comments

Show HN: Controlling a 3D globe with computer vision and hand gestures

https://twitter.com/measure_plan/status/1937921080267517960
2•nimzoLarsen•25m ago•1 comments

A Brief, Incomplete, and Mostly Wrong History of Electric Vehicles

https://climatedrift.substack.com/p/a-brief-incomplete-and-mostly-wrong
1•skandergarroum•26m ago•1 comments

BNFGen: A random text generator based on context-free grammars

https://baturin.org/tools/bnfgen/
2•fanf2•26m ago•0 comments

Show HN: Postly – A lightweight social blogging platform with real-time UI

https://postlyapp.com
1•Malik-Whitten•28m ago•0 comments

Ask HN: Anyone interested in taking over my indie app?

2•quinto_quarto•30m ago•0 comments

Strangers 2 in-universe tourist info website

https://www.visitvenusoregon.com/
1•rendall•30m ago•0 comments

Could Open Table Formats End the Reign of Snowflake and Databricks?

https://www.prequel.co/blog/could-open-table-formats-end-the-reign-of-snowflake-and-databricks
1•ctc24•31m ago•0 comments