Open source infrastructure
for the sustainability ecosystem.
C22 Foundation is the open source initiative of C22 Tech Agency, focused on responsible AI and sustainability.
We build free, vendor neutral open source tools and resources that help the sustainability ecosystem grow: connecting talent, enabling research, and lowering the barrier to climate-aligned work.
What we've built
Sustainability Jobs
A free, open source job board for the sustainability ecosystem. Clean energy, climate tech, ESG, environmental science, green finance, circular economy. No paywalls, no recruiters. Employers post for free. Seekers apply for free.
More coming
More open source tools for the sustainability ecosystem are in progress.
Built by C22
C22 is a boutique deep tech agency. We work with organisations tackling the hardest problems in sustainability and climate, building AI systems, strategy tools, and bespoke infrastructure for material impact.
Responsible AI and sustainability is in our core DNA. C22 Foundation is how we give back to the ecosystem we're part of: open tools, freely available, forever.
Visit C22 →