CalcFlip

What it does

Instant converters for 24-hour to 12-hour time, military time, Roman numerals, and Celsius to Fahrenheit. Free, no signup, results in under one second.

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  Time Calc2017 · 8mobile.org · ▲93

  Calculator to perform elementary operations on units of time

• AU
  A Unix timestamp converter that includes the micro and nanoseconds2023 · justquickmath.com · ▲27

  I find myself having to convert a lot of unix timestamps to a human readable format, but most of the online calculators I found don't include the micro or nanoseconds in the human readable output. It's a small detail, but I find myself having to manually space out the timestamp frequently. I'm learning frontend development, so I made this converter to hopefully make it easier to convert timestamps. Welcome to any feedback :)

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  C To F Temperature Converter2025 · ctoftemp.com · ▲6

  Convert celsius to fahrenheit

• 
  Temperature Converter2025 · converttemperature.com · ▲10

  Convert temperature between Celsius, Fahrenheit, and Kelvin.

• 
  Free Online Temperature Tool2025 · ▲7

  Celsius to fahrenheit converter

• 
  The Ultimate K to F Conversion Tool2025 · vacancybee.com · ▲11

  K to f converter

• 
  Run full iOS 16.5 firmware on Android Devices▲536

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 5d ago · github.com

• 
  /dev/null▲503

  a social network for devs

  Dev tools · 8d ago · dev-null.sh

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 28d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 26d ago · talanoa.email

• 
  myPip▲273

  Vibe code, publish, and monetize games with AI

  Dev tools · 12d ago · mypip.dev

• 
  Doneas▲272

  A daily accountability call with other entrepreneurs.

  Dev tools · 19d ago · doneas.com

• 
  Brila▲1,364

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

• 
  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

• 
  Fathom 3.0▲800

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• 
  Brutalist Concrete Laptop Stand (2024)▲786

  I made a laptop stand out of solid concrete, in the style of brutalist architecture, with themes of urbex and urban decay

  Life & fun · Apr 2026 · sam-burns.com

• 
  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app