VxDWriter 

VxDWriter is a tool for developing Windows 95/98 device driver (VxD) entirely in C/C++. It includes VxDWizard, run-time library, VxD class library, VxD service wrapper library, sample VxDs, library source code, technical support through e-mail, etc.
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Advanced TCP Logger 

This program is a simple proxy server(port-mapper). It is an ideal tool for monitoring any network software or for researching network protocols.
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QuickCrypt Library 

Fast, highly optimized implementation of symmetric (private-key) encryption algorithms: DES, Triple DES (3DES), DESX, BLOWFISH, RIJNDAEL (AES-Advanced Encryption Standard),GOST. Allows to encrypt/decrypt files, memory blocks, strings, streaming data.
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psSendMail 

Easily send e-mail directly from your custom applications. Works with all 32-bit Windows development environments and includes Paradox, Access, and Visual Basic examples.
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Purchase Gateway 

Use this ActiveX control to process credit card payments from within your applications. The control can then integrate with your existing registration method to enable or unlock demos or pay-per-use software. Uses 128 bit encryption.
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InstallEssen 

Quick and easy Installer,generates self-extracting executable file using simple Wizard.Full featured support includes specification of Environment Variables,Registry Entries,License,Password protection. Generates Uninstaller automatically.
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