Okay... I've built a cryptocurrency screener covering over 400 spots coins recently. There's plan for future: scale up to thousands by integrating more exchanges.
The big technical feature is server-side filtering and sorting of massive datasets in F# using SQL Server, avoiding browser limits entirely.
Supports flexible multi-condition screening with AND/OR logic. It calculates various tech indicators like RSI, moving averages plus performance metrics. Search history persists too.
This screener