Moving toward the open innovation (OI) model requires multifaceted transformations within companies. It often involves giving away the tools for product development or sharing future product directions with open tools ecosystems. Moving from the traditional closed innovation model toward an OI model for software development tools shows the potential to increase software development competence and efficiency of organizations. We report a case study in software-intensive company developing embedded devices (e.g., smartphones) followed by a survey in OSS communities such as Gerrit, Git, and Jenkins. The studied branch focuses on developing Android phones. This paper presents contribution strategies and triggers for openness. These strategies include avoid forking OSS tools, empower developers to participate in the ecosystem, steer ecosystems through contributions, create business through differentiation, and create new ecosystems. The triggers of openness are from 30 different companies with examples. Finally, openness requires a cultural change aligned with strategies and business models. © 1999-2012 IEEE.