OSMO is acronym for Odevzdávací systém matematické olympiády. It is submitting and grading system for Olympiad in Mathematics, competition for elementary and high school students in the Czech republic.
I developed the system together with Martin Mareš.
It is quite large web application written in Python (Flask, SQL Alchemy, …) capable of:
It was firstly used in 2021 and it is still developed. Fork of OSMO is used by Olympiad in Physics.