diff --git a/README.md b/README.md
index 2f3d057..d345972 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,15 @@ Yubikey Book.
 1. https://docs.yubico.com/yesdk/users-manual/yubikey-reference/transports/overview.html
 
 
+<br>
+
+----
+
+<br>
+
+* https://git.hatter.ink/hatter/card-cli
+* https://git.hatter.ink/hatter/tiny-encrypt-rs
+
 <br>
 
 ----