.NET library MassTransit going commercial with V9

Summary

For over a decade, MassTransit has been the leading open-source .NET messaging framework, trusted by thousands developers and enterprises worldwide to build scalable, distributed applications. It has facilitated billions of transactions, powered mission-critical systems in finance, healthcare, government, and logistics, and seamlessly integrated with cloud platforms like Microsoft Azure, AWS, and Google Cloud. As adoption has surged and enterprise demand has grown, MassTransit has evolved into a cornerstone of modern event-driven architectures. Today, we’re excited to share an important milestone!Update - post announcement Q&A added belowWith MassTransit v9, we are transitioning to a commercial licensing model. This change ensures long-term sustainability, continued innovation, and enterprise-grade support — while leaving MassTransit v8 open-source and available to the community.When MassTransit first started in 2007, it was a single assembly that supported MSMQ. Fast-forward to today, and MassTransit has extensive support for several message brokers, multiple databases, powerful capabilities including saga state machines, job consumers, message scheduling, and routing slips, as well as its own SQL-based message transport. The entire solution builds and deploys over thirty NuGet packages.Because of its extensive capabilities, MassTransit has grown into a mission-critical foundation for organizations worldwide. Trusted by enterprises in more than 100 countries across industries including finance, healthcare, logistics, and government. As adoption has surged, so has the need for:Dedicated, full-time development resources to enhance and maintain the platform.Enterprise-grade support and guarantees for business-critical applications.A sustainable, long-term funding model to drive continuous innovation.By making v9 a commercial release, we can accelerate MassTransit’s evolution, delivering even better scalability, security, and performance — while continuing to support t...