Charon.Communications for .NET & Compact Framework   
by Charon Software, Inc.   

Charon.Communications is a robust, efficient, and all-purpose serial communications component for the .NET Framework and .NET Compact Framework. It is compatible with all physical and virtual serial ports on server, desktop, and mobile devices.
This component is licensed per developer, not per-seat: there are no royalty fees.
Please choose your order type (below) from the following:
.NET Framework (desktop, server, etc.)
.NET Compact Framework (CE.NET, Pocket PC, etc.)
.NET Framework and .NET Compact Framework (all platforms -- $199 savings!)