diff --git a/source.md b/source.md
index ec46e4e..07e4517 100644
--- a/source.md
+++ b/source.md
@@ -576,6 +576,7 @@ This section contains libraries that take an experimental or unorthodox approach
 - [GitJournal](https://github.com/GitJournal/GitJournal) <!--stargazers:GitJournal/GitJournal--> - Journaling your data in a Git Repo by [Vishesh Handa](https://github.com/vHanda)
 - [AuthPass](https://github.com/authpass/authpass) <!--stargazers:authpass/authpass--> - Keepass compatible password manager for mobile and desktop by [hpoul](https://github.com/hpoul)
 - [Fwitter](https://github.com/TheAlphamerc/flutter_twitter_clone) <!--stargazers:TheAlphamerc/flutter_twitter_clone--> - Full Twitter clone using Firebase solution by [Sonu Sharma](https://github.com/TheAlphamerc)
+- [Harpy](https://github.com/robertodoering/harpy) <!--stargazers:robertodoering/harpy--> - A feature rich Twitter client by [Roberto Doering](https://github.com/robertodoering)
 
 ## Utilities