Please contribute to these community projects where possible.

These libraries offer varying degrees of functionality for using the FamilySearch API.



  • fs-php-sdk - An object-oriented PHP SDK which uses Guzzle for the HTTP client.


  • FSAPI.NET - A .NET SDK for using the FamilySearch API.

We also offer libraries in many languages which provide serialization and deserialization into native objects.


  • Fiddler - A debugging proxy to inspect and modify HTTP and HTTPS traffic
  • Poster - A Firefox extension that can make HTTP requests to any URL and inspect the response
  • Wireshark - A network packet analyzer that can capture and inspect any network traffic

What other utilities do you find useful? Please let us know so fellow developers can benefit.