Merge pull request #1923 from kaishuu0123/patch-2

Add Re:Backlogs

README.md

@@ -1288,6 +1288,7 @@ _See also [Ticketing](#ticketing), [Task management/To-do lists](#task-managemen
 - [Phabricator](http://phabricator.org/) - Collection of web applications that help build better software. ([Demo](https://secure.phabricator.com/), [Source Code](https://github.com/phacility/phabricator)) `Apache-2.0` `PHP`
 - [Phproject](http://www.phproject.org/) - High performance full-featured project management system. ([Demo](http://demo.phproject.org/), [Source Code](https://github.com/Alanaktion/phproject)) `GPL-3.0` `PHP`
 - [ProjeQtOr](https://www.projeqtor.org/) - A complete, mature, multi-user project management system with extensive functionality for all phases of a project. ([Demo](https://demo.projeqtor.org/), [Source Code](https://sourceforge.net/p/projectorria/code/HEAD/tree/branches/)) `AGPL-3.0` `PHP`
+- [Re:Backlogs](https://github.com/kaishuu0123/rebacklogs) - Project management and collaboration tool powered by Ruby on Rails & VueJS. ([Demo](https://rebacklogs.saino.me/users/sign_up)) `MIT` `Ruby`
 - [Redmine](http://www.redmine.org/) - Redmine is a flexible project management web application. ([Demo](http://demo.redmine.org/), [Source Code](https://svn.redmine.org/redmine/)) `GPL-2.0` `Ruby`
 - [RhodeCode](https://rhodecode.com/) - RhodeCode is an open source platform for software development teams. It unifies and simplifies repository management for Git, Subversion, and Mercurial. ([Demo](https://try.rhodecode.com/), [Source Code](https://code.rhodecode.com/)) `AGPL-3.0` `Python`
 - [SCM Manager](https://www.scm-manager.org/) - The easiest way to share and manage your Git, Mercurial and Subversion repositories over http. ([Source Code](https://bitbucket.org/sdorra/scm-manager/src)) `BSD-3-Clause` `Java`