Added FreeScout (#1499)

* Add FreeScout

* Remove source code link from FreeScout

README.md

@@ -1263,6 +1263,7 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 - [Deskulu](https://github.com/Taskulu/deskulu) - Opensource helpdesk and ticketing system based on Drupal 7. ([Demo](https://help.taskulu.com)) `GPL-2.0` `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)) `OSL-3.0` `PHP`
 - [Flyspray](http://www.flyspray.org/) - Uncomplicated, web-based bug tracking system. ([Source Code](https://github.com/Flyspray/flyspray)) `GPL-2.0` `PHP`
+- [FreeScout](https://github.com/freescout-helpdesk/freescout) - Open source clone of Help Scout: email-based customer support application, help desk and shared mailbox. `AGPL-3.0` `PHP`
 - [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)) `GPL-2.0` `PHP`
 - [OpenSupports](https://www.opensupports.com/) - Multi language ticket system with FAQ, role management, metrics and canned response features. ([Demo](https://www.opensupports.com/demo/), [Source Code](https://github.com/opensupports/opensupports)) `GPL-3.0` `PHP`