GutBrain Ventures is a Boston-based venture capital firm investing primarily in enterprise software and related technology companies across the United States. The firm backs seed, early-stage and later-stage venture rounds and has acted as a lead or co-lead investor. Its portfolio signals include SaaS, AI and machine learning, cloud, developer tools, cybersecurity, analytics, IoT, data and marketing technology, making it relevant for founders building B2B software and infrastructure businesses.