There are 2 repositories under mantisbt-plugin topic.
Source control integration plugin framework for MantisBT, including support for Github, Gitlab, Bitbucket, Gitweb, Cgit, Subversion, Mercurial and more
Scrum board based on statuses, priorities, and target versions
This MantisBT plugin allows you to import bugs with a CSV file.
Enables the Scrum Framework to your Mantis-Installation
MantisBT plugin to slim down the bug report page to make it more accessible for unexperienced users
Adds the task scheduling function in MantisBT based on the calendar of events with the possibility of one-way synchronization with Google Calendar.
Paste print screens directly into MatisBT issue reporting(details) page
This plugin can be used to send periodic email reminders to bug reporters, managers, and assignees.
New shiny look for Mantis. Skins, custom company Logo, custom CSS and more.
MantisBT plugin allowing selection of a Reporter on the Report Issue page
The plugin implements a live search for related issues during the creation of a new issue.
MantisBT 2.x plugin that makes the status color more visible
A MantisBT 2.x plugin to insert custom HTML, PHP, JS and/or CSS in the Mantis Bug Tracker HTML layout.
Customize Email Subject for MantisBT - This plugin is looking for a new maintainer !