diff --git a/Related-Projects.md b/Related-Projects.md
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@@ -77,6 +77,8 @@
 ## Web Interfaces
 
 * [mruby-sinatic](https://github.com/mattn/mruby-sinatic) Sinatra like simple web framework by [mattn](https://github.com/mattn)
+* [mruby-shelf](https://github.com/katzer/mruby-shelf) Rack like web apps by [katzer](https://github.com/katzer)
+* [mruby-yeah](https://github.com/katzer/mruby-yeah) DSL for quickly creating shelf apps with minimal effort by [katzer](https://github.com/katzer)
 
 ## Device / Platform specific