If none of the above SDKs fits your need there is always the option of developing your own SDK. To guide the implementation we have a few resources available:
- [Unleash Client Specifications](https://github.com/Unleash/client-specification) - Used by all official SDKs to make sure they all behave correctly across different language implementations. This helps us verify that 10% of the users in the Java SDK means the exactly same 10% of the users in Python.
- [Client SDK overview](../client-specification) - Overall guide of the Unleash Architecture and important aspects of the SDK role in it all.