
devtoolz.dev
CodeKitHub
DevToys
CodeSwissKnife
All Over Tools
DevNestTools
DevBox
Free browser-based tools for formatting, encoding, decoding, conversion, generators and everyday software development tasks.

UptimeRobot
Uptime Kuma
Pingdom
StatusCake
Statsignal
Site monitoring
Uptime Doctor
Reliable alerts when your website goes down.
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 | developertoolbox.tech | onlineornot.com |
| Pricing | — | |
| Company | — | Startup from France · 1 - 9 employees · 2021 |
| Listed in |
In their own words, as submitted to SaaSHub.


Developer Tool Box is a free collection of browser-based developer utilities for everyday software development. It provides tools for JSON formatting, Base64 conversion, UUID generation, URL encoding, hashing, and more, with additional utilities covering crypto, web, development, networking,...
Monitor your websites, APIs, cron jobs & scheduled tasks, Get immediate alerts via Email, SMS, Slack, PagerDuty (+ more).
What each product offers, as listed by its team.


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


No analysis of DeveloperToolBox.tech yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No DeveloperToolBox.tech videos yet. You could help us improve this page by suggesting one.
Monitor a Website with OnlineOrNot
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using DeveloperToolBox.tech and OnlineOrNot. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DeveloperToolBox.tech since Sep 2026.
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 / 19 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
When comparing DeveloperToolBox.tech and OnlineOrNot, you can also consider the following products.

DevToolbox is a free, no-signup collection of 148 client-side developer tools and 78 guides — a lightweight alternative to installing dozens of separate SaaS dev-tool apps.
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Free online tools: JSON formatter, password generator, QR code maker, calculators, converters and more. Fast, private, no login — everything runs in your browser.
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A fancy self-hosted monitoring tool.
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A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
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With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
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