I and my team made this: https://onlinemathtools.com/l-system-generator https://onlinemathtools.com/l-system-generator. You can enter the axiom and the rewrite

I and my team made this: https://onlinemathtools.com/l-system-generator https://onlinemathtools.com/l-system-generator. You can enter the axiom and the rewrite rules and get a visualization of the grammar. Also, in the examples section, we added 9 most popular fractals.