diff --git a/content/lirs/index.md b/content/lirs/index.md
index ab26895..396a32c 100644
--- a/content/lirs/index.md
+++ b/content/lirs/index.md
@@ -33,6 +33,7 @@ An unofficial [English translation](./spec.html) of mine is available.
 * Official Perl 5 module: [LIRS.pm][LIRS.pm]
 * [Text::LIRS][Text::LIRS], previously known as Meta::LIRS
 * [lirs.rb][lirs.rb] (dead link), a Ruby module for LIRS
+* [Natsu][natsu]: Perl CGI scripts for LIRS, HINA 1.x and HINA 2.x
 
 I could not recover the source code for the last two implementations;
 if you have them, please [contact][contact] me!
@@ -42,4 +43,5 @@ if you have them, please [contact][contact] me!
 [LIRS.pm]: https://web.archive.org/web/20020621223342/http://amano.haun.org:80/LIRS.pm
 [Text::LIRS]: https://web.archive.org/web/20031211200149/http://m-factory.zone.ne.jp:80/archive/
 [lirs.rb]: http://www.open-news.com/~maki/di/lirs.rb
+[natsu]: http://www.harmonicom.jp/natsu/
 [contact]: https://tilde.town/~lucidiot/contact.html