updating overview.

Signed-off-by: hayleycd <cook.hayley@gmail.com>

content/en/language_clients/language_client_overview.md

@@ -5,4 +5,15 @@ title: Language Client Overview
 weight: 5
 ---
 
-Hello world. 
+Sigstore uses [cosign](../../cosign/signing/overview) to sign and verify packages by default, but you can opt to use a language specific client instead. 
+
+Sigstore has clients for the following language ecosystems:
+
+- [Python](./python/python_client_overview)
+- [Rust](https://github.com/sigstore/sigstore-rs#features)
+- [Ruby](https://github.com/sigstore/sigstore-ruby#sigstore)
+- [JavaScript](https://github.com/sigstore/sigstore-js#sigstore-js---)
+- [Java](https://github.com/sigstore/sigstore-java#sigstore-java)
+- [Go](https://github.com/sigstore/sigstore-go#sigstore-go)
+
+Currently, language client documentation is hosted in the individual project repositories. This documentation is being migrated to the general sigstore docs.