Wren - Offset your carbon footprint by saving rainforests

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

YAYZY - Track the carbon footprint of each purchase in real-time

C++ - Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation

Klima - Go carbon neutral

Drift - A messaging app that helps you grow your business.