 Elevated Landscape Technologies (ELT)
 - Specializing in lightweight, pre-grown green roofs for all slopes and building types. Provides a variety of services to the industry, focusing on installation of green roofs as well as consultation and maintenance.- Green Roofs for Healthy Cities
- Industry association whose mission is to develop a market for green roof infrastructure products and services in cities across North America.
- GreenGrid
- Provides information on the GreenGrid green roof techology to improve the energy performance of buildings, reduce stormwater runoff, and contribute to a healthier environment.
- Greenroofs.com
- Resource portal for the greenroof industry. Includes events, job links, forum, and an FAQ on organic greenroof architecture.
- Livingroofs.org
- U.K.-based organization that promotes green roofs (roofs that are intentionally vegetated) and provides advice for their installation.
- Roofscapes, Inc.
- Offers design and installation of vegetated roof covers, known as Roof Meadows, and other ecological green roof gardens.
- ZinCo
- Developers of green roof landscape systems.
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