CHECKONLINE.APP

What it does

Checkonline.app is the platform that helps you to monitor all your websites every 5 minutes. It check's your website health and notifies you if your website is down. How much money have you lost due to website problems?

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  Website Checker2018 · ▲110

  Sends you alerts when your website goes down.

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  Checkly 2.02021 · checklyhq.com · ▲209

  Monitor your modern web app in 1 minute. Free dev plan!

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  Checkify2021 · ▲77

  Super minimal, simple and inexpensive 24/7 uptime monitoring

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  WebCheck2020 · webcheck.vercel.app · ▲65

  Get notified whenever some of your websites are down

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  Simple Ping2024 · simple-ping.com · ▲5

  Seamlessly monitor your websites, web apps and servers

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  Check Site Status2025 · checksitestatus.com · ▲5

  Free Website Down Checker and Monitoring Tool

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  Run full iOS 16.5 firmware on Android Devices▲515

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

  Dev tools · 1d ago · github.com

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  /dev/null▲492

  a social network for devs

  Dev tools · 5d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 29d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

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  OpenBot▲362

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

  Dev tools · 25d ago · openbot.run

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  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 · 22d ago · talanoa.email

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  Blush▲1,462

  Illustrations for everyone

  Dev tools · 2020 · blush.design

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  SHA-256 Animation▲1,053

  Animation of the SHA-256 hash function in your terminal. - in3rsha/sha256-animation

  Dev tools · 2020 · github.com

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  This Word Does Not Exist▲956

  This Word Does Not Exist uses an artificial intelligence model named GPT-2 to invent new English words.

  AI · 2020 · thisworddoesnotexist.com

• P3
  Plotting 3 years of hourly data in 150ms▲785

  Life & fun · 2020 · leeoniya.github.io

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  Untools▲783

  Hand-picked tools for better thinking

  Work · 2020 · untools.co

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  Copytesting▲781

  Improve your website copy based on data from your audience

  Growth · 2020 · wynter.com