Timber Grid
- A full timber earth retention system.
- http://www.timbergrid.com/

Terraforce
- Produces mortarless earth retaining concrete blocks. Includes specifications, designs and dealer locations.
- http://www.terraforce.com/

Geowestern
- Supplier of earth retention products including block retaining wall systems.
- http://www.geowestern.com

Radial Block
- Concrete blocks for structrual and landscaping walls.
- http://www.radialblock.com

Soil Retention
- Specializes in segmental retaining walls and erosion control development, block production and installation.
- http://www.soilretention.com/

Stone Strong Systems
- Large-scale retaining wall system based on a 5,800lb main block that is 3' x 8' with a 24 sq. ft. face.
- http://www.stonestrong.com

Zeewall
- Producer of interlocking "Z" shaped sheet piling made of PVC.
- http://www.zeewall.com

Superior Piling
- Manufacturer of light weight steel piling.
- http://www.superiorpiling.com

Tenax
- Manufacturer and supplier of geo-grids, plastic nets and meshes.
- http://www.tenax.net/geosynthetics/reinforcement/retaining_walls.htm

Gold-Joint Industry Co., Ltd.
- Producer and supplier of geo-grid and agricultural nets.
- http://www.gold-joint.com/

Redi-Rock International
- Manufacturer of large-scale retaining wall blocks.
- http://www.redi-rock.com

The Reinforced Earth Company
- Design and supply of retaining wall systems, noise barriers and precast arches.
- http://www.reinforcedearth.com/

Lokblok
- Manufactures a dry-stacked segmental interlocking retaining wall system. South Africa.
- http://www.lokblok.co.za/

Rockwood
- Suppliers of concrete retaining wall units to form large, small, complex, tiered, curved and straight retaining walls.
- http://www.retainingwall.com/

Materials International
- Manufactures vinyl decking and vinyl sheet piling.
- http://www.materialsintl.com/

VERSA-LOK
- Solid, pinned segmental retaining wall system. Includes company background, product descriptions and installation seminar schedule.
- http://www.versa-lok.com/

Tensar Earth Technologies, Inc.
- Supply biaxial and uniaxial geo-grids for retaining walls, reinforced slopes, pavements, foundations, and other engineered earth technologies.
- http://www.tensarcorp.com/

Risi Stone
- Design, manufacture and construction of segmental retaining walls.
- http://www.risistone.com/

Hilfiker
- Designer and supplier of reinforced soil retaining wall systems.
- http://www.hilfiker.com/

Allan Block
- Segmental retaining walls and mortarless fencing system.
- http://www.allanblock.com/

GeoStone Retaining Wall Systems, Inc.
- Supplier of segmental retaining walls and decorative hardscape products.
- http://www.geostone.com/

Inter-Block
- Manufactures interlocking concrete blocks for the construction of gravity type retaining walls.
- http://www.inter-block.com/

StoneWall Select
- Designers and licensors of stackable, mortarless retaining wall system.
- http://www.selecticd.com/

Anchor
- Designer and licensor of retaining wall systems for large-scale shoreline, interstate, commercial, residential and do-it-yourself landscaping projects.
- http://www.anchorwall.com/

Keystone
- Offers a full line of retaining wall products, from small home landscaping units to structural units for commercial use.
- http://www.keystonewalls.com