JustInBrowser
Hoppscotch
RegExr
crontab guru
Favicon.io
TinyPNG
Postman
DreamFactory
MuleSoft Anypoint Platform
Insomnia REST
RapidAPI for Mac
Apigee
AWS CloudTrail
Sentinet
JustInBrowser is a collection of free, privacy-friendly developer and design tools that run entirely in your browser. No signup, no uploads, and nothing leaves your device. It includes an API tester, JSON viewer, regex tester, cron generator, image tools (crop, compress, annotate, add text), a favicon generator, color tools, and more.
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JustInBrowser's answer
Next.js (React) and TypeScript, styled with Tailwind CSS, shipped as a fully static, client-side site. The image tools use the HTML5 Canvas API, and a lightweight Supabase backend powers the feedback widget. No server processes your data at runtime.
JustInBrowser's answer
This one's tricky, because it's a free public tool with no named enterprise customers. Honest options: leave it blank, or list user types like this:
JustInBrowser's answer
I kept needing small tools during everyday work: test an API, format some messy JSON, crop a screenshot, make a favicon. Every time I either had to install an app, sign up, or paste private data into a random website I did not fully trust. So I built the tools I actually reach for into one site that runs client-side, keeps your data on your device, and never asks you to register.
JustInBrowser's answer
Everything runs entirely in your browser. There is no signup, nothing is uploaded to a server, and exports have no watermark. It puts 20+ developer and design tools (API tester, JSON viewer, regex tester, cron generator, image crop/compress/annotate, favicon generator, and more) in one fast place, so you do not need to install an app or hunt for a different site for each task.
JustInBrowser's answer
It is genuinely free with no limits and no account, and it is private by default because your data never leaves your device. Most free tool sites either make you sign up, upload your files, stamp a watermark on the result, or push you to a paid plan. This does none of that. It loads instantly, works on any browser, and covers many everyday tasks in one place.
JustInBrowser's answer
Developers, QA and test engineers, web designers, students, and indie makers who need a quick, no-fuss tool without installing software, creating an account, or uploading private files.
Based on our record, Postman seems to be more popular. It has been mentiond 30 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Postman (postman.com) is a comprehensive API platform that goes beyond mocking, offering a full suite for API development, testing, and monitoring. With its mock server feature, Postman enables teams to simulate responses for various endpoints, making it a popular choice for end-to-end API management. - Source: dev.to / over 1 year ago
Postman is a widely used tool for API testing and interaction. Its "Mock Servers" feature lets you create a mock version of your API, returning specific responses for testing. While useful, Postman may lack advanced mock server management features compared to other tools. - Source: dev.to / over 1 year ago
Postman is a widely adopted tool for API design and development, offering an intuitive interface for creating, testing, and documenting APIs. It simplifies the API design process, allowing architects to quickly prototype and refine their designs. - Source: dev.to / almost 2 years ago
Once deployed, thoroughly test your serverless function to confirm it behaves as expected. Invoke the function manually from the cloud platformโs console or use tools like Postman, Apidog, or Fusion ( Fusion is ApyHubโs own API Client ) to test HTTP-triggered functions. Ensure the function executes correctly and handles errors gracefully. - Source: dev.to / over 2 years ago
To test the API endpoints, you can use Postman. Download and install Postman from Postman's official website. - Source: dev.to / over 2 years ago
Hoppscotch - Open source API development ecosystem
DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
MuleSoft Anypoint Platform - Anypoint Platform is a unified, highly productive, hybrid integration platform that creates an application network of apps, data and devices with API-led connectivity.
crontab guru - The quick and simple editor for cron schedule expressions by Cronitor
Insomnia REST - Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a devโfriendly UI, built-in automation, and an extensible plugin ecosystem.