Wren - Offset your carbon footprint by saving rainforests
RabbitMQ - RabbitMQ is an open source message broker software.
YAYZY - Track the carbon footprint of each purchase in real-time
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
Klima - Go carbon neutral
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.