Top 20 NuGet quotes Packages

Stock Indicators for .NET. Send in historical price quotes and get back desired technical indicators such as Stochastic RSI, Average True Range, Parabolic SAR, etc. Nothing more.
A .NET Standard library for accessing stock market data from Twelve Data
Wrapper for API (REST & WebSocket)
Fynance is a wrapper for stack market data based on .Net Standard. It is current working with Yahoo Finance but new providers can be added in the next versions.
A service for quickly retrieving any USD-to-currency exchange quote. Current implementation uses API.
Wrapper for API (REST & WebSocket)
.NET Client for the TD Ameritrade Trading Platform. Helps developers integrate TD Ameritrade API into custom trading solutions.
Yahoo Finance API to retrieve quote snapshots, and quote, dividend and split history.
A simple CoinMarketCap Pro API v1 client written in C#.