diff --git a/README.md b/README.md
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@@ -169,4 +169,10 @@ This repo collects leaked prompts of GPTs.
 - [Captain Action](./prompts/Captain%20Action.md) by Yohei Nakajima
 - [Naruto GPT](./prompts/Naruto%20GPT.md) by selerite.com
 - [🦾 ClubGPT - developer team in one GPT 🦾](./prompts/%F0%9F%A6%BE%20ClubGPT%20-%20developer%20team%20in%20one%20GPT%20%F0%9F%A6%BE.md) by clubgpt.vip
-- [Customer Service GPT](./prompts/Customer%20Service%20GPT.md) by Daniel J Patterson
\ No newline at end of file
+- [Customer Service GPT](./prompts/Customer%20Service%20GPT.md) by Daniel J Patterson
+
+## Open Source GPTs
+GitHub repos with prompts, actions and knowledge files of existing GPTs.
+
+- [Open Data Germany](https://github.com/stefangrotz/OpenDataGermanyGPT)
+- [EsperantoGPT](https://github.com/parolteknologio/EsperantoGPT)