Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
RabbitMQ - RabbitMQ is an open source message broker software.
nginx - A high performance free open source web server powering busiest sites on the Internet.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
vCenter Server - IaaS platform for managing and deploying virtual machines
Hyperledger - Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.