> ## Documentation Index
> Fetch the complete documentation index at: https://launchdarkly.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# SDKs

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<View title="EU docs" />

These guides help developers learn how to work with the LaunchDarkly SDKs, which evaluate feature flags in your application's code.

* [Use cases for SDK wrappers](/docs/guides/sdk/sdk-wrappers)
* [Using LaunchDarkly without a supported SDK](/docs/guides/sdk/unsupported-sdk)
* [Using mobile SDKs](/docs/guides/sdk/mobile)
* [Using the Lua SDK with HAProxy](/docs/guides/sdk/haproxy)
* [Using the Lua SDK with NGINX](/docs/guides/sdk/nginx)
* [Using the JavaScript SDK in Salesforce Lightning Web Components](/docs/guides/sdk/lightning-web-components)
* [Resilient architecture patterns for LaunchDarkly SDKs](/docs/guides/sdk/resilience)