Task Adapter is a downloadable tool that you can run on premises to integrate
Trello, Redmine, Atlassian JIRA, Microsoft Project and other bug tracking / task management systems.
Download the distributive, unpack to any folder and run inside your company's VPN.
Manual and automatic scheduled export are supported.
Task fields list varies from system to system.
List of task fields supported for Trello system is different from the one for Microsoft Project or Atlassian JIRA.
The following task fields are supported for most systems:
Created On date
Updated On date
Due date ("finish date" or "estimated finish date")
Author name (can require admin permissions for some systems)
Assignee name (can require admin permissions for some systems)
Time estimate (hours)
Type (bug, feature, task, etc)
Status (new, assigned, in progress, closed, etc.)
Priority (High, Normal, Low, etc).
Note that some systems like Atlassian JIRA have different sets of available fields in projects depending on project
type - e.g. default "Scrum" project in JIRA will not have "Due date" field, and so on.