diff --git a/README.md b/README.md
index dc699f6d..5e9e615b 100644
--- a/README.md
+++ b/README.md
@@ -896,17 +896,17 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 
   * [Bugzilla](https://www.bugzilla.org/) - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project. `MPLv2` `Perl`
   * [Bumpy Booby](http://bumpy-booby.derivoile.fr/) - A simple, responsive and highly customizable PHP bug tracking system. ([Source Code](https://github.com/piero-la-lune/Bumpy-Booby)) `MIT` `PHP`
-  * [Cerb](http://www.cerberusweb.com/) - Group-based e-mail management project.
+  * [Cerb](http://www.cerberusweb.com/) - Group-based e-mail management project. ([Source Code](https://github.com/wgm/cerb)) `DPL` `PHP`
   * [Deskulu](https://github.com/Taskulu/deskulu) - Opensource helpdesk and ticketing system based on Drupal 7. ([Demo](https://help.taskulu.com)) `GPLv2` `PHP`
   * [DiamanteDesk](http://diamantedesk.com/) - DiamanteDesk is FREE Open Source easy-to-use help-desk solution. ([Demo](http://diamantedesk.com/demo/), [Source Code](https://github.com/eltrino/diamantedesk-application)) `OSLv3` `PHP`
-  * [Flyspray](http://www.flyspray.org/) - Uncomplicated, web-based bug tracking system. ([Source Code](https://github.com/Flyspray/flyspray)) `GPLv2`
-  * [Gaskit](https://github.com/bkeepers/gaskit) - A git-backed issue tracker. It uses a branch in your local git database to store the tickets. `GPL`
-  * [HuBoard](https://github.com/huboard/huboard) `⚠ ` – Instant project management for your GitHub issues (Connects directly GitHub API) `MIT` `Ruby`
-  * [MantisBT](https://www.mantisbt.org/) - Self hosted bug tracker, fits best for software development. ([Demo](https://www.mantisbt.org/bugs/my_view_page.php)), ([Source Code](https://github.com/mantisbt/mantisbt)) `GPLv2`
-  * [osTicket](http://osticket.com/) - Simple support ticket system.
-  * [OTRS](http://www.otrs.com/) - Trouble ticket system for assigning tickets to incoming queries and tracking further communications.
-  * [Request Tracker](https://www.bestpractical.com/rt/) - Ticket-tracking system written in Perl.
-  * [TheBugGenie](http://www.thebuggenie.com) - Ticket system with extensive user rights system.
+  * [Flyspray](http://www.flyspray.org/) - Uncomplicated, web-based bug tracking system. ([Source Code](https://github.com/Flyspray/flyspray)) `GPLv2` `PHP`
+  * [Gaskit](https://github.com/bkeepers/gaskit) - A git-backed issue tracker. It uses a branch in your local git database to store the tickets. `GPL` `Ruby`
+  * [HuBoard](https://github.com/huboard/huboard) `⚠ ` – Instant project management for your GitHub issues (Connects directly GitHub API). `MIT` `Ruby`
+  * [MantisBT](https://www.mantisbt.org/) - Self hosted bug tracker, fits best for software development. ([Demo](https://www.mantisbt.org/bugs/my_view_page.php)), ([Source Code](https://github.com/mantisbt/mantisbt)) `GPLv2` `PHP`
+  * [osTicket](http://osticket.com/) -  Manage, organize and archive all your support requests and responses in one place. ([Source Code](https://github.com/osTicket/osTicket)) `GPLv2` `PHP`
+  * [OTRS](http://www.otrs.com/) - Trouble ticket system for assigning tickets to incoming queries and tracking further communications. ([Source Code](https://github.com/OTRS/otrs)) `AGPLv3` `Perl`
+  * [Request Tracker](https://www.bestpractical.com/rt/) -  An enterprise-grade issue tracking system. ([Source Code](https://github.com/bestpractical/rt)) `GPLv2` `Perl`
+  * [TheBugGenie](http://www.thebuggenie.org) - Ticket system with extensive user rights system. ([Source Code](https://github.com/thebuggenie/thebuggenie)) `MPLv2` `PHP`
 
 
 ## URL Shorteners
@@ -991,6 +991,7 @@ See also [Documentation Generators](#documentation-generators), [Wikimatrix](htt
  * `CC0` - [Public Domain](https://creativecommons.org/about/cc0/)
  * `CeCILL-B` - [CEA CNRS INRIA Logiciel Libre](http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt)
  * `CPALv1` - [Common Public Attribution License Version 1.0](http://opensource.org/licenses/CPAL-1.0)
+ * `DPL` - [Devblocks Public License 1.0](http://www.cerberusweb.com/license)
  * `ECLv2` - [Educational Community License, Version 2.0 ](http://opensource.org/licenses/ECL-2.0)
  * `EPLv1` - [Eclipse Public License, Version 1.0](https://www.eclipse.org/legal/epl-v10.html)
  * `GPL` - [GNU General Public License](https://www.gnu.org/licenses/gpl-1.0)