
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

RescueTime
Toggl
ActivityWatch
TimeScribe
ManicTime
Clockify
Cattr
Chronoid runs automatically in the background, captures everything, and keeps your data on YOUR Mac forever. No subscriptions. No cloud uploads. No bullshit.

Which is more popular?
Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | chronoid.app |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from Vietnam · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodePen yet.
Chronoid is a macOS time tracker and automatic time tracking app for people who want to know where their workday went without starting and stopping timers. It records activity in the background while you work, then builds a clear timeline from the apps, websites, documents, and work context in...
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
What Is Codepen?
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 CodePen and Chronoid.
Chronoid's answer:
Chronoid combines automatic macOS activity tracking with local-first privacy, project and billing workflows, focus tools, and a built-in MCP server for AI assistants. It records useful work context across apps, websites, documents, and supported resource paths without manual timers. The activity database stays on your Mac by default, and Chronoid does not record keystrokes or screenshots.
Chronoid's answer:
Choose Chronoid if you want accurate automatic tracking without a recurring subscription, and you want control over detailed work data. It turns activity into project time, reports, invoices, and focus insights. Its rules organize work automatically, while its built-in MCP server lets compatible AI assistants answer questions about tracked time and support selected workflow actions.
Chronoid's answer:
Chronoid is built first for freelancers, solo consultants, and small agencies that bill by the hour and do not want to lose billable time to forgotten timers. It is also useful for creative professionals, remote workers, and developers using AI-assisted workflows who want a private record of where their workday went.
Chronoid's answer:
Chronoid was built by Vu Nguyen, a Mac developer and freelancer who spent years forgetting timers, guessing invoice hours, and under-billing. The product began as a way to capture work automatically, keep the data local, and offer an alternative to another subscription
Chronoid's answer:
Share your experience with using CodePen and Chronoid. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
We have no reviews of Chronoid yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / 2 months ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 3 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 12 months ago
Tracking Chronoid since Jul 2025.
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Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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Log what you do on your computer. Simple (yet powerful), extensible, no third parties.
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