diff --git a/readme.md b/readme.md
index 6e07079..e97a506 100644
--- a/readme.md
+++ b/readme.md
@@ -116,6 +116,7 @@ Inspired by the [awesome](https://github.com/sindresorhus/awesome) list thing.
 - [rtail](https://github.com/kilianc/rtail) - Terminal output to the browser in seconds, using UNIX pipes.
 - [kill-tabs](https://github.com/sindresorhus/kill-tabs) - Kill all Chrome tabs to improve performance, decrease battery usage, and save memory.
 - [alex](https://github.com/wooorm/alex) - Catch insensitive, inconsiderate writing.
+- [pen](https://github.com/noraesae/pen) - Live Markdown preview in the browser from your favorite editor.
 
 
 ### Functional programming