Dev tools · September 28, 2022
Impulse.dev
Impossible dev tools for React and Tailwind
Impulse.dev launched on September 28, 2022 with 82 votes, #517 of 3,464 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.
What it does
Build modern websites right in your browser without giving up on code. Impulse allows you to edit your UI right in the browser while automatically changing your code precisely the way you would do it manually.
Build modern websites right in your browser on top of your code
React and Tailwind made it an infinitely better experience for me, but something was still missing. Switching between the code and the browser all the time felt wrong. At the same time, I felt lost with no-code editors because they are made for designers not developers. Impulse is my experiment to bridge that gap and make a "design" tool that works directly with my code. It's a dev tool that lives entirely in your browser and allows you to inspect and edit (!) your code visually and intuitively. With Impulse, I've come to love fiddling with web UIs again. Don't manually search which code creates which UI ever again! You are always one keystroke away from jumping into your code editor to the…from impulse.dev
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21st.dev2025 · 21st.dev · ▲1,211I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!
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I made this because building UIs in a lexical medium like code is super annoying. I have to pre-render what I’m making in my head, and then jump between the browser and IDE to test. I was inspired by the developer console in chrome and safari since I end up editing css there because it’s ironically more convenient. Hope it’s useful!
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