Show HN: Topaz – replace three Azure emulators with one binary

Category: devtools

Tags: azure, emulator, cloud-development, local-development, devops

Score: 8.3/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 8)

Topaz is a single-binary Azure emulator that replaces multiple separate emulators (Azurite, Cosmos DB, Service Bus) with one tool, supporting control/data planes, ARM/Bicep deployments, RBAC, and Entra ID locally. Its innovative combination of broad Azure service coverage, self-contained binary, and no-runtime design fills a clear gap in the Azure development ecosystem.

Target audience: backend devs, devops, data engineers

Repository: https://github.com/TheCloudTheory/Topaz · C# · Apache-2.0 · 26 stars

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