Project Spotlight: Steeltoe

November 29, 2025 by .NET Foundation Board

Steeltoe provides a collection of libraries that helps users build production-grade cloud-native applications using externalized configuration, service discovery, distributed tracing, application management, and more. It is proven—trusted by developers all over the world, delivering delightful experiences to millions of end-users every day, with contributions from VMware, Microsoft, and more.

Steeltoe is flexible, offering comprehensive extensions and third-party libraries that let developers build almost any web application imaginable, whether cloud-scale microservices or heavyweight enterprise applications. It is productive, building on .NET runtime libraries, providing the necessary glue code, and supporting many of Spring Cloud’s libraries, patterns, and templates.

Steeltoe is fast, with developer productivity as one of its superpowers—developers can start a new project in seconds with the Steeltoe Initializr at start.steeltoe.io. It is secure, remediating security issues quickly and responsibly, monitoring dependencies, and providing industry-standard security integrations.

Finally, Steeltoe is supportive, backed by a global, diverse community that offers guides, tutorials, videos, support, and access to the development team on Slack.

What Steeltoe Can Do

  • Microservices: Production-grade features with independently evolvable services.

  • Cloud: Your code, any cloud—connect and scale your services.

  • Web Apps: Fast, secure, responsive applications connected to any data store.

Link: https://steeltoe.io/