Francisco Partners-backed SmartBear, a provider of software development and visibility tools, agreed to merge with Stoplight, a global application programming interface technology company. Financial terms were not disclosed. “With the addition of Stoplight, SmartBear accelerates its commitment to investing in API capabilities where developers need it most to help them develop high quality, complex software at scale. We are delighted to join forces with Stoplight's team to deliver the best of our industry-leading capabilities in a unified way. As one of the largest supporters of API open source communities, we also welcome Stoplight’s OS communities and look forward to growing in strength and numbers," Dan Faulkner, SmartBear CEO.