Below are some plugins I have developed:

Security

• All In One WP Security:  “A COMPREHENSIVE, EASY TO USE, STABLE AND WELL SUPPORTED WordPress SECURITY PLUGIN”.
  ps: I am starting to compile a troubleshooting and recovery tips page for users of the AIOWPS plugin which you might find useful. This page will grow as I compile more and more useful tips for cases when something goes “unexpected” happens when you are using the All In One WP Security and Firewall plugin. 
• Country Blocking Addon: This plugin will allow you to block visitors based on their country. The plugin will calculate the visitor’s country of origin by using the IP address of the user.
• Smart 404 Addon: This plugin will allow you to permanently block IP addresses based on 404 events.

Other WordPress Plugins

• CF7 Autoresponder Addon: This plugin allows you to add people to your mailchimp lists when they submit a contact form 7
• CF7 Mailchimp Premium Addon: This premium plugin adds even more functionality to the free version such as enabling you to add subscribers to one or multiple groups.