1. RealAtom: a platform for commercial real estate lending that emphasizes sustainability through features such as green certifications and energy efficiency ratings.

2. The Green Building Information Gateway: an online database of commercial buildings that are LEED- or Energy Star-certified, as well as buildings with other green building certifications.

3. Energy Star Portfolio Manager: a tool that helps building owners and managers track and benchmark their energy usage and carbon emissions, allowing for the identification of energy-saving opportunities.

4. LoopNet: a leading online marketplace for commercial real estate with a wide array of sustainable properties available for sale or lease.

5. CoStar: a comprehensive commercial real estate platform that includes property listings, market analytics, and sustainability-related data.

6. Yardi Energy Solutions: a suite of energy management tools that help commercial property owners and managers reduce energy consumption, save money, and improve sustainability.

7. Building Radar: a global database of construction projects that includes information on sustainable building materials, designs, and certifications for future investment opportunities.

8. RealPage: a commercial real estate software platform that offers sustainability solutions such as benchmarking, energy management, and green certification tracking.

9. Better Buildings Challenge: a public-private initiative that encourages commercial building owners and operators to reduce their energy usage and greenhouse gas emissions through energy efficiency upgrades.

10. Green Street Advisors: a research and advisory firm specializing in commercial real estate sustainability, offering insights and data to inform investment decisions.