I built a cryptocurrency screener handling over 400 coins with plans for huge expansion. It has server-side filtering and sorting so it works fast even with tons of data.
You can set up complex screens using AND/OR logic. It calculates technical indicators like RSI, moving averages, plus performance metrics.
The architecture uses F# on the backend for processing and TypeScript/Angular for a smooth frontend experience.
This is part of my larger solo-building no-code backtesting platform, formerly