
Dex
Monica
Hippo App
Rumo App
Cloze
ZoomInfo
UpHabit
Introducing Clay, the beautiful and private home for all your relationships. Populated from the ground up using your calendar and social history, Clay is the most stunning, powerful way to remember who you've met—and what matters to them.

10015.io
Bitty Coder
CodeSwissKnife
ToolKitKE
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, Clay.earth seems to be more popular. It has been mentioned 20 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | clay.earth | codekithub.com |
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| Platforms | — | |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Clay.earth 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 Clay.earth and CodeKitHub. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


It's a market! Kindest seems to have staying power: https://www.kindestapp.com I first thought to share Clay (https://clay.earth) but I see they were acquired by Automattic recently. - Source: Hacker News / about 1 year ago
For your use case(s), try https://clay.earth/. - Source: Hacker News / almost 2 years ago
Word of warning: I tried Marissa Mayer's Sunshine contacts and it nuked my phone's contacts. Luckily I had a backup vcard export from way back I could restore from. Others I've tried: * Clay (https://clay.earth) is a great option for... - Source: Hacker News / almost 2 years ago
Tracking CodeKitHub since Jul 2026.
When comparing Clay.earth and CodeKitHub, you can also consider the following products.

One place for your relationships — impress with thoughtfulness
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10015.io is an all-in-one toolbox offering many tools from various categories.
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Monica is an open-source personal CRM to keep track of your friends and family.
Compare Monica to Clay.earth or CodeKitHub:

Fast developer tools that process your input locally in your browser. No account required.
Compare Bitty Coder to Clay.earth or CodeKitHub:

Forgetting personal details? Hippo helps you stay attentive. Keep track of friends, family and colleagues you care for. So next time you meet, you remember all their important details.
Compare Hippo App to Clay.earth or CodeKitHub:
Feature-packed developer toolkit. Includes text conversion, encoding, UUID generation, cryptography, color conversion, JSON/XML formatting, and more for simplified, efficient development tasks without online data transmission.
Compare CodeSwissKnife to Clay.earth or CodeKitHub: