diff --git a/README.md b/README.md
index d3891c8..8247b0d 100644
--- a/README.md
+++ b/README.md
@@ -274,6 +274,7 @@ them:
 - [Spamster](https://github.com/gourcetools/spamster)![stars](https://img.shields.io/github/stars/gourcetools/spamster.svg?style=social) - Spamster is for testing relays and spam filters.
 - [tostr](https://github.com/slaninas/tostr)![stars](https://img.shields.io/github/stars/slaninas/tostr.svg?style=social) - a twitter to nostr bot
 - [Embed widget](https://embed.nostr.band) - Embed Nostr notes or profiles into any website with just a line of code.
+- [NostrTool](https://nostrtool.com/) - a tool to play with keys.
 
 
 ## NIP-05 identity services