7 Best Sustainability Circle Groups (Updated May 2026)

7 Sustainability communities on Circle

Updated 5/7/2026

All

#1
Sustainable Brands Community
on circle
Global community for sustainable business and climate tech innovators. Network for companies committed to environmental and social responsibility.
Forum
Chat
Events
Paid
#2
Soapbox Project
on circle
Soapbox Project is a cozy community that makes it easy (and fun) for busy people to get involved in social and environmental justice! Think of us as your online community center where you can make new friends while making a difference.
150 members
Forum
Chat
Pairing
Events
Jobs
Paid
Courses
2 views / month
#3
4WARD.earth
on circle
4WARD.earth is the world's largest collaborative climate and sustainability community, uniting thousands of innovators, founders, investors, corporates, NGOs, and policymakers to accelerate global climate action. Our mission is to create a global, open-access ecosystem that connects the right people, resources, and opportunities to help climate solutions scale faster. With 60+ local city groups meeting regularly in-person, thousands of global members collaborating online, and monthly sector meetups and networking events, we're removing friction and increasing collaboration to decarbonize our world. Whether you're building, funding, or supporting solutions for a better planet, 4WARD.earth is where you belong.
5K members
Forum
Chat
Perks
Events
Newsletter
Jobs
2 views / month
#4
B Lab Certified Community
on circle
Global community of B Lab certified companies and climate tech ventures. Network for sustainable businesses and social impact entrepreneurs.
Forum
Chat
Events
#5
Advanced Energy United
on circle
Community and advocacy for advanced energy and cleantech companies. Network for clean energy entrepreneurs and investors.
Forum
Events
Paid
2 views / month
#6
Net Zero Initiative
on circle
Community focused on achieving net-zero emissions. Network of companies, investors, and professionals working on climate commitments.
Forum
Chat
Events
#7
World Economic Forum - Climate Hub
on circle
Global platform for climate tech and sustainability discussions. Connects leaders and innovators in climate solutions, clean energy, and sustainable entrepreneurship.
Forum
Events
2 views / month

All Sustainability communities

Sustainability
33 communities for Environmentalists
325 / mo
Sustainability, 33 communities, 325 views per month including community pages

FAQ

: Communities for people working on sustainability, climate action, and eco-friendly living. Covers everything from large collaborative climate networks with city chapters to Discord communities for permaculture enthusiasts, eco-renovators, and people making sustainable lifestyle changes.
: Hive Index lists 7 Sustainability circle groups on Circle. Most listings with size data are medium (14%) or large (14%). We only have a handful of listings so far, so treat these numbers as directional. The main Sustainability topic page covers every platform we track for this topic.
: Forum is the most common (100%). Others that show up often include online/offline events and live chat. Use the feature filters above the list to narrow results.
: 4 of 7 (57%) are free to join. The rest require payment, an application, or both.
: On Hive Index, the default Popular sort surfaces Sustainable Brands Community, Soapbox Project, 4WARD.earth, and B Lab Certified Community first. Popularity reflects visitor interest in communities on the site, not a universal quality score. Use the sort menu for Ratings, Largest, or Newest.
: Listings are submitted by community builders and researchers, reviewed for topic relevance, and updated with platform, feature, member, review, and traffic data where available. Member counts are approximate. Popular reflects visitor interest in communities on the site, with richer profiles breaking ties. Ratings, Largest, and Newest use review scores, reported member counts, and listing age instead.
: This page was last updated 5/7/2026, based on the most recent change to the topic or its listings. We refresh entries when communities are submitted, claimed, or reviewed, and we update member counts, features, and traffic data on an ongoing basis.