diff --git a/readme.md b/readme.md
index 029cd51..acc2a70 100644
--- a/readme.md
+++ b/readme.md
@@ -14,7 +14,8 @@ Kunjungi [DOT Stacks (Stackshare.io)](https://stackshare.io/dot-indonesia/stack)
 + [Gitlab Repository](https://gitlab.com)
 + [Google Drive](https://drive.google.com) - document management
 + [Git](https://git-scm.com/) - Distributed version control
-+ [SourceTree](https://www.sourcetreeapp.com/), [Gitkraken](https://www.gitkraken.com/) - Git client
++ [SourceTree](https://www.sourcetreeapp.com/) (Free) - Git client
++ [Gitkraken](https://www.gitkraken.com/) (Only Public Repositories) - Git client
 + [iTerm](https://www.iterm2.com/) - Terminal replacement untuk MacOS dan dapat diintegrasikan dengan [Z-Shell](https://ohmyz.sh/) agar lebih interaktif
 + [Homebrew](https://brew.sh/) - Package manager untuk macOS
 + [Spotify](https://www.spotify.com/id/) - Pemutar musik online (jangan lupa bahagia :D)
@@ -47,7 +48,7 @@ Kunjungi [DOT Stacks (Stackshare.io)](https://stackshare.io/dot-indonesia/stack)
 #### Opsional:
 
 + [Nginx](https://www.nginx.com/) - Web server, load balancer, & reverse proxy
-+ [Docker](https://docs.docker.com/)
++ [Docker](https://docs.docker.com/) (Windows, Mac, Linux) - The Modern Platform for High-Velocity Innovation
 + [Laravel Homestead](https://laravel.com/docs/5.6/homestead) - Development environment yang berbasis vagrant untuk aplikasi PHP atau laravel
 + [Virtual Box](https://www.virtualbox.org/wiki/Downloads) - Virtual box dibutuhkan untuk host laravel homestead
 + [Vagrant](https://www.vagrantup.com/downloads.html) - Development environment untuk laravel homestead
@@ -69,16 +70,17 @@ Kunjungi [DOT Stacks (Stackshare.io)](https://stackshare.io/dot-indonesia/stack)
 + [XAMPP](https://www.apachefriends.org/index.html) or [WAMP](https://bitnami.com/stack/wamp/installer) - Windows local server
 + [DataGrip](https://www.jetbrains.com/datagrip/) - JetBrains Database IDE for SQL developers
 + [DBeaver](https://dbeaver.io/) - Free multi-platform database tool for developers
++ [MailTrap](https://mailtrap.io/) - Safe Email Testing for Staging & Development
 
 ### Tools & IDE
 
 + Free Editor: 
   + [Visual Studio](https://visualstudio.microsoft.com),
   + [Visual Studio Code](https://code.visualstudio.com/),
-  + [Sublime Text](https://www.sublimetext.com/) (Freemium), 
+  + [Sublime Text](https://www.sublimetext.com/) (Freemium),
   + [Vim](https://www.vim.org/)
   + [Atom](https://atom.io/)
-+ Non Free Editor: 
++ Non Free Editor:
   + [PhpStorm](https://www.jetbrains.com/phpstorm/)
   + [WebStorm](https://www.jetbrains.com/webstorm/)