KetBy has been discontinued.
KetBy was an open-source quantum composer that allowed users to build, analyze, simulate and share quantum circuits.
It was built using React.js with NextJS and MUI on the front-end and PHP with Laravel and Python with Qiskit on the back-end. The source code is still avilable on GitHub.
If you have any questions, you can reach to us at ketby.com@gmail.com.
Keep scrolling for some screenshots.