ERII vs OOMA Comparison

Energy Recovery Inc designs and manufactures energy-saving technologies. The firm uses its proprietary pressure exchanger technology to help customers in multiple industries improve their operations and lower their emissions. Using its proprietary technology, it offers energy recovery devices, including pressure exchangers, pumps, and turbochargers, mainly used for seawater desalination and wastewater treatment. Additionally, the company is involved in the development of emerging technologies, such as the PX G1300 used in industrial and commercial refrigeration applications. The firm's reportable operating segments are: Water, which generates maximum revenue, and Emerging Technologies. Geographically, it generates maximum revenue from the Middle East, and the rest from other markets.

Ooma Inc is a communications services company. It is a smart software-as-a-service (SaaS) and unified communications platform that delivers voice and collaboration features, including messaging, intelligent virtual attendants, and video conferencing, and residential phone service provides PureVoice high-definition voice quality, advanced functionality and integration with mobile devices. Its services rely upon the following main elements: multi-tenant cloud service, on-premise devices, desktop and mobile applications, and calling platforms. It generates revenues from the sale of subscriptions and other services.