FactSet 

Open:FactSet Partners - Documents client library for .NET

Conversational API Powered by FactSet Mercury client library for .NET

Issue Tracker client library for .NET

Investment Banking Office Refresh client library for .NET

Security Explanation client library for .NET

FactSet Programmatic Environment client library for .NET

Intraday Tick History client library for .NET

Real-Time Price Alerting client library for .NET

Real-Time News client library for .NET

Real-Time Quotes client library for .NET

FactSet News client library for .NET

Vermilion client library for .NET

Real-Time Time Series client library for .NET

Procure to Pay: Provisioning client library for .NET

Office Cloud Refresh client library for .NET

FactSet Supply Chain client library for .NET

BookBuilder client library for .NET

Company Logo client library for .NET

FactSet Private Company client library for .NET

Best Execution Analytics for Smarter Trading (BEAST) client library for .NET