OpenCilk aims to address a growing societal need for high-quality infrastructure that supports research and education in software performance engineering. To this end, OpenCilk seeks to provide a task-parallel computing platform that is completely open and freely available, as well as easy to use, teach, modify, and extend. Encouraged by the existing uses of OpenCilk by researchers and educators, OpenCilk is developing an ecosystem that holds OpenCilk as a premier open-source research platform for next-generation parallel-computing research, especially for emerging applications of task parallelism.