# Legacy OpenFeature providers

:::div{.warning}
This page covers feature flags in projects that haven't been upgraded to feature flag rules. If your project uses rules, see [Feature flags](/docs/feature-flags) instead. To move a project to rules, see [Upgrading to feature flag rules](/docs/feature-flags/upgrading-to-rules).
:::

These are the available Octopus OpenFeature provider SDKs. Getting started instructions for each of these providers is documented in the README files in the repositories.

## Server SDKs

- [.NET](https://github.com/OctopusDeploy/openfeature-provider-dotnet)
- [Java](https://github.com/OctopusDeploy/openfeature-provider-java)

## Web SDKs

- [TypeScript/JavaScript](https://github.com/OctopusDeploy/openfeature-provider-ts-web)