netcontrol (2 products)

CRC .NET control 3.0 (Shareware, $10.00)

CRC .NET control is the checksum library for .NET developers.The library, especially written on .NET framework, provides exact and fast calculations of checksums. The library has an easy to use interface, fast and reliable infrastructure and provides calculation of CRC32 and CRC16 polynomial checksums, like used in the Ethernet, WinZip and so on.

Net Control 2 4.00 (Shareware, $35)

Net Control 2. Simple, powerful and inexpensive tool for administrators of school, office, home and other local networks.