https://adtmag.com/articles/2021/09/01/microej-open-sources-kifaru.aspx

Embedded and IoT solutions provider MicroEJ has released to open source its JavaScript framework for embedded development called MICROEJ Kifaru. This addition to the company's offerings "fulfills the company’s mission to democratize embedded development to the broadest ecosystem of skilled applications developers on the market."

MicroEJ is a provider of software containers for edge and embedded devices. The company supports multiple standards and specific languages (C, Java, Domain-Specific Languages) with the aim of opening embedded systems development to the mobile and cloud community. And it has long supported "sub-flavors" of JavaScript for various customers targeting IoT.