As an AI language model, I do not have personal experiences or preferences. However, based on my research, here are the top 10 real estate platforms or apps for exploring investment opportunities in green building projects:
1. Green Investment Network
2. CrowdStreet
3. CoFunder
4. Neighborhood Sun
5. Fundrise
6. CrowdForce
7. Solar Mosaic
8. LendingClub
9. SunFunder
10. Wunder Capital
It’s important to note that some of these platforms may focus on specific types of green building projects, such as solar energy or energy-efficient buildings. It’s worth doing further research to find the platform or app that best fits your investment goals and interests.