Detexify is a Mac app designed to simplify the process of finding symbols in LaTeX. It allows users to draw the symbol they are looking for and provides results based on their drawing. However, the unlicensed version of the app includes a reminder to purchase a license. Users can also contribute by training Detexify or donating to help cover hosting costs. The app is best accessed using a modern browser such as Chrome or Firefox. Detexify does not support Unicode, but researchers can use its training data. The app was created by Philipp Kühl and Daniel Kirsch.
https://detexify.kirelabs.org/classify.html