A peer-to-peer sustainable marketplace exclusively for students across the Claremont Colleges. Reduce waste, earn eco badges, and keep campus green.
For students at
Everything you need to buy, sell, trade, and donate — verified to the Claremont community.
Every account is verified with a Claremont Colleges email address. No strangers, just neighbors you can trust.
Chat directly with buyers and sellers. Negotiate, ask questions, and coordinate pick-up without leaving the app.
Every exchange keeps items out of landfills. Track your CO₂ saved and earn sustainability badges as you go.
Give things away for free. Mark items as donations. End-of-semester drives make move-out season greener.
Rate sellers after an exchange. Build your reputation within the community and transact with confidence.
Filter by category, price, condition, campus, and more. Find exactly what you need, fast.
From sign up to exchange in minutes.
Create your account using any Claremont Colleges email. Verify with a 6-digit code and you're in — instantly.
Search what you need or post what you have. Add photos, set a price or mark it free, and publish in seconds.
Connect with the other party in real-time chat. Coordinate a campus pickup that works for both of you.
Every completed exchange earns you eco points and contributes to your sustainability score. Campus wins too.
Sustainability first
We track the environmental impact of every transaction using EPA WARM data — so you always know exactly how much CO₂ you've kept out of landfills.
Eco badge tiers
5C Exchange was born from a simple observation: every semester, perfectly good items get thrown away because there's no easy way to connect buyers and sellers within the campus community.
We built a marketplace that's safe (verified .edu only), sustainable (every exchange tracked for eco impact), and simple — designed specifically for campus life across the Claremont Colleges.
Join the 5C Exchange community and start buying, selling, and donating sustainably.
Free to download · .edu email required