FactSet 

Exchange DataFeed Snapshot API - Entire Exchange client library for .NET

FactSet Entity Report Builder client library for .NET

FactSet Intraday Tick History client library for .NET

Market Intelligence client library for .NET

Optimization Engine API (Multi-period) client library for .NET

Model Portfolio client library for .NET

Quant Engine client library for .NET

Quantitative Research Environment client library for .NET

Security Modeling client library for .NET

Events and Transcripts client library for .NET

Exchange DataFeed Data Model client library for .NET

S&P Global Fixed Income Evaluated Prices and Analytics client library for .NET

Event Calendar client library for .NET

Securitized Derivatives API for Digital Portals client library for .NET

Virtual Portfolio API for Digital Portals client library for .NET

Bonds API for Digital Portals client library for .NET

Recommendation List API for Digital Portals client library for .NET

Global Filings client library for .NET

Price Alerting API for Digital Portals client library for .NET

Watchlist API for Digital Portals client library for .NET