Gauge Capital has announced it has invested in Streamline Healthcare Solutions.

Streamline, based in Oak Brook, Ill., is a provider of electronic health record software primarily serving behavioral health providers and state and local departments of health. Founded in 2003, the company is the developer of the SmartCare platform and serves a range of behavioral health end-markets, including mental health, substance abuse and developmental disability.

Gauge, based in Southlake, Texas, is a middle market private equity firm that invests in healthcare and other sectors. Founded in 2013, Gauge typically commits $20 million to $100 million in each platform investment and targets companies with $5 million to $40 million in EBITDA.

Terms of the investment were not disclosed.