Portland-based business accelerator Venture Hall has announced the seven early-stage startup companies to be included in the inaugural class of its summer accelerator program.

Venture Hall, itself a startup, in March announced a partnership with MaineHealth and Unum Group to work with health care ventures at Venture Hall’s Portland location to accelerate their progress through training and mentoring. To be considered, companies must have a working prototype and make it through an application and interview process, it said.

The first round of companies chosen by Venture Hall are Maine-based SpinDocs and Rockport Medical, California-based Livzo and Ella, Texas-based Welnys, Colorado-based Cliexa and Missouri-based Janus Choice. All seven companies offer technology services for the health-care industry.

“We’re incredibly excited to bring these teams to Maine to be a part of our accelerator program this summer,” said Jess Knox, president of Venture Hall, in a news release. “Each of these companies provide a real opportunity to explore different ways of supporting the resilience of frontline caregivers. We’re excited to get them here and start working with them.”

The summer accelerator program runs June 12 through Sept. 8, according to the release.