Directional Boring Central
- The primary source of information for directional drilling contractors.
- http://www.directionalboringcentral.com/

Geoforum.com
- A technical information system offered free of charge.
- http://www.geoforum.com/

Public Works Online
- Daily news and product updates for professionals in the public works industry- Information on manufacturing, technology, equipment, supplies, and discussion forums, online chat, newsletter and software
- http://www.publicworks.com/

Microtunneling Resource Center
- Microtunneling portal site featuring free email (yourname@microtunneling.com), an email based discussion forum, and microtunneling resource pages.
- http://www.microtunneling.com/

HDD-Consult.com
- An information highway for the trenchless technology industry to search for contacts and information within the experts of our industry.
- http://www.hdd-consult.com/

Trenchless Information Center
- A trenchless technology portal with good introductory information regarding the various technologies in use. Has an active bulletin board.
- http://www.no-dig.com/

Trenchless Data Service
- A general trenchless technology website with extensive trenchless new construction information including a very comprehensive directory of construction firms and some information regarding their experience levels. Sections are also being developed regardi
- http://www.trenchlessdataservice.com/