fullstackhero - Free .NET 10 Starter Kit with React UI

Is fullstackhero really 100% free?

Yes. The whole repository is MIT-licensed end-to-end — backend, both React apps, all ten modules, all deployment templates. There is no paid tier, no premium module, no commercial license, and no telemetry phoning home. Use it for a hobby project or for a venture-backed company; the licence is the same.

How production-ready is it?

The kit is at 10.0.0-rc.1 with around 1,500 [Fact]/[Theory] backend tests across unit, integration and architecture suites — the integration suite runs against a real PostgreSQL in Docker via Testcontainers — plus 200+ Playwright end-to-end tests across both React apps, all passing on every build. It uses only first-party Microsoft and best-in-class OSS libraries (EF Core 10, Hangfire 1.8, Finbuckle 10, Mediator 3, FluentValidation 12, OpenTelemetry 1.15) — no bespoke runtime framework you'd be locked into. v10 ships when the remaining release-candidate items are closed.

Do I have to use all ten modules?

No. Each module is its own project and registers itself through the IModule contract. Delete the ones you don't need from the moduleAssemblies array in Program.cs and remove the project from the solution — the rest of the kit keeps working. Cross-module communication only happens through *.Contracts assemblies, so removing a module never breaks another.

Can I use it to build a multi-tenant SaaS?

Yes — multitenancy is the default, not an add-on. Tenant isolation is enforced on every entity through an EF Core global query filter; entities opt in by inheriting BaseEntity or marking IHasTenant. System-wide rows (plans, impersonation grants, outbox messages) opt out by implementing IGlobalEntity. Caching, background jobs, and the outbox pattern are all tenant-aware.

How do I deploy it?

Two paths. For development, .NET Aspire orchestrates everything with a single dotnet run command. For production, deploy/docker/docker-compose.yml ships a complete stack (PostgreSQL, Valkey, MinIO, API, Admin, Dashboard, DbMigrator) you can stand up on a single host. Each service is also a normal Docker image you can ship to Kubernetes, Azure App Service, AWS ECS, or anywhere else.

How do I receive updates after I clone it?

fullstackhero is a copy-and-own starter, not a runtime dependency. You take the snapshot you cloned and evolve it however you want. Pull individual fixes from upstream when you want to; cherry-pick patches; or freeze your fork and never look back. There is no upstream package you have to keep upgrading.

How does it scale as my product grows?

It scales the way a modular monolith scales. Each module is a separate project with its own DbContext and HTTP boundary, talking to the rest only through its Contracts assembly. When a module hits a true horizontal-scaling need, you extract it into its own service without rewriting the consumers — the contract is already the contract. Until then you ship one process, one deploy, one set of logs, which is faster for most teams than running ten services from day one.

Can I deploy it to Azure, AWS, or Kubernetes?

Yes. The API, DbMigrator, admin and dashboard apps each ship as a normal Docker image — they don't depend on any orchestrator. deploy/docker/docker-compose.yml runs everything on a single VM; the same images run on Azure App Service, AWS ECS / App Runner, Google Cloud Run, or any Kubernetes cluster. PostgreSQL, Valkey, and MinIO are off-the-shelf — swap them for managed services (Azure Postgres, AWS ElastiCache, S3) when you're ready.