Business to Business E-commerce
General
Briscnet - Briscnet's applications and services help users achieve project cost savings, compress schedules, and build stronger relationships with customers, business partners and suppliers.
BuilderSupplyNet.com -  is an e-business marketplace for the construction industry. It allows you to bid more work, get more work, and manage it better.
Buildfolio - is a technology provider for the sourcing and procurement of building materials.
Right of Way has been made available as a service to the general public and in order to provide an Internet presence for the right of way profession and related
infrastructure industries.
4specs.com is a fast and comprehensive way to access manufacturers' websites for product information.

Water
WaterDesk - An Online Marketplace and source of news and product information
ChemicalDesk - "at ChemicalDesk, you will find everything you need to serve all the chemical requirements of the water  treatment and pulp & paper industries."