Sentry is launching Fair Source, a new approach to software sharing that balances user freedom with developer sustainability for modern businesses. This approach, which includes licensing models such as the Functional Source License (FSL), allows companies to share their software products and platforms while maintaining control of their roadmap and business model. The concept of Fair Source emerges within the context of Free and Open Source Software (FOSS) and is designed to resolve a long-standing tension between community and commercial approaches in software development. With Fair Source, companies can now engage with developer communities for their core products without compromising their business model, making it possible for more companies to adopt open-source models while maintaining control over their intellectual property.