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Pingdom
StatusCake
Statsignal
Site monitoring
Uptime Doctor
Reliable alerts when your website goes down.

10015.io
Bitty Coder
CodeSwissKnife
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devtoolz.dev
Code Beautify JSON Validator
FreeFormatter
Free online tools: JSON formatter, password generator, QR code maker, calculators, converters and more. Fast, private, no login — everything runs in your browser.

Which is more popular?
Based on our record, OnlineOrNot seems to be more popular. It has been mentioned 73 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | onlineornot.com | codekithub.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from France · 1 - 9 employees · 2021 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Monitor your websites, APIs, cron jobs & scheduled tasks, Get immediate alerts via Email, SMS, Slack, PagerDuty (+ more).
No description of CodeKitHub yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of CodeKitHub yet.
Walkthroughs and reviews on video.
Monitor a Website with OnlineOrNot
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing OnlineOrNot and CodeKitHub.
CodeKitHub's answer:
CodeKitHub's answer:
Compared to single-purpose sites like JSONFormatter.org or CodeBeautify that only handle one task, CodeKitHub covers the same ground plus image, PDF, QR, and calculator tools in one place — useful if you regularly switch between different tool types during a workday.
Unlike FreeFormatter (which recently shut down its service), CodeKitHub's tools require no backend at all — everything runs as static, client-side JavaScript, so there's no server cost pressure driving ads, paywalls, or future shutdowns of the kind that killed similar sites.
If you need a tool site in a language other than English — Spanish, French, German, Japanese, Korean, Chinese, and others — CodeKitHub is one of the few free tool sites that actually localizes the full interface rather than just running it through machine translation on top of an English-only tool.
CodeKitHub's answer:
CodeKitHub serves two overlapping groups:
Traffic data shows both groups in practice: technical tools (QR generator/decoder, Base64 encoder, JSON tools) draw developer-heavy referral sources like Hacker News and ChatGPT, alongside broader organic search traffic for everyday utility tasks.
CodeKitHub's answer:
CodeKitHub started as a small set of browser-based developer utilities and grew into a 120+ tool collection covering JSON formatting, encoding, image/PDF processing, calculators and more. The core principle from the start was that every tool should run entirely client-side — no backend, no data leaving the user's browser — which keeps the tools fast, private, and cheap enough to run without ads getting in the way. The site has since expanded to 13 languages to serve users beyond English-speaking markets.
CodeKitHub's answer:
Share your experience with using OnlineOrNot and CodeKitHub. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Still OnlineOrNot (https://onlineornot.com/), 5.5 years on. Most recently I shipped an MCP server (w/ OAuth sign-in) recently to expose the API a bit better to agents, a TypeScript SDK and rewrote the CLI to use it. Just before LLMs... - Source: Hacker News / 18 days ago
Still OnlineOrNot (https://onlineornot.com/) - I've been working on adding more and more configurability to the browser checks feature. More recently, I've made it so you can drop your existing playwright test suites into the code... - Source: Hacker News / 6 months ago
I've been celebrating five years of working on OnlineOrNot (https://onlineornot.com/) by adding more features for teams that build software: - 2FA, PassKey, and password-based login for folks that hate magic links - Moved my entire API... - Source: Hacker News / 7 months ago
Tracking CodeKitHub since Jul 2026.
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