Yes and no. Our core development stack is based on plugins that we have researched and worked with for years. While the majority of the stack are commercial (we pay yearly for their license), there are a few small plugins that sit in the 'freemium' realm; these plugins offer an advanced, paid license tier for those that want the additional features. For the most part, the free tier meet our needs well enough, and as these plugins are semi commercial, they are constantly kept up to date. We will never install, or recommend using, unlicensed or free only tier plugins, as they can represent both a reliability and security threat.