1)   Windows Std Serial Comm Lib for Delphi 4.3
Borland Delphi RS232 serial port communications component library. Control multiple ports simultaneously. Includes line status/control,modem control,ASCII/XMODEM/YMODEM, virtual ports (USB to serial, Bluetooth serial, hardware/software flow control.

 2)   .NET Zip Component ZipForge.NET 2.01
ZipForge.NET is a fast and powerful Zip component for .NET. It lets you easily integrate ZIP compression support into your C# or VB.NET applications. ZipForge.NET features include strong AES encryption, Unicode filenames, SFX and much more.