diff --git a/README.md b/README.md
index f43738f..27de6cc 100644
--- a/README.md
+++ b/README.md
@@ -53,3 +53,4 @@ sudo mise x -- go run main.go
 - [gh do](https://github.com/k1LoW/gh-do)
 - [localhost](https://blog.jxck.io/entries/2020-06-29/https-for-localhost.html)
 - [dotenvx](https://dotenvx.com/)
+- [browser toolbox](https://toolbox.googleapps.com/)