Ticket tracking project management workflow software

Question

I'm looking for a piece of software that fulfills the following requirements. I've exhausted my search capabilities.

• Version control integration (SVN preferred)
• Tickets support custom fields, including search and filter
• Different types of tickets can go through different custom workflows
• Support of multiple projects
• User access controlled by roles assigned permissions per project and/or per workflow
• Gantt chart
• Time tracking aggregated by state in workflow per ticket, or generic 'activity' on ticket
• View, Edit permissions per field, per role, per state in workflow
• Ability to set whether a field is required per state in workflow
• Release / burndown management
• Continuous Integration integration (Maven preferred)
• Eclipse / Mylyn Integration
• Hard coded start / due dates, and expected start / finish dates based on resource availability (Nice to have)
• Resource leveling (Nice to have)
• What if scenarios - What would happen to the dates of Project A if I prioritized Project B (Nice to have)
• Active Directory integration (Nice to have)

Redmine was really close, but the lack of ability to set permissions per project / workflow (tracker) is a show stopper.

Answer 1

I'm using Trac for this kind of job (see my answer here for details):

• Version control integration (SVN preferred): Definitely. I'm using it with SVN, but other VCSs (e.g. git) are also supported.
• Tickets support custom fields, including search and filter: Yes. And more, like master tickets/dependencies, tags, ...
• Different types of tickets can go through different custom workflows: Custom workflows are possible. AFAIK this should be doable, though I've not explicitly verified the "different tickets use different workflows" part.
• Support of multiple projects: I'm running it this way. For easy switching between them from the web frontend, there's a plugin available.
• User access controlled by roles assigned permissions per project and/or per workflow: Per project definitively. Per workflow probably not, but there might be a solution for that as well.
• Gantt chart: via plugin, yes.
• Time tracking aggregated by state in workflow per ticket, or generic 'activity' on ticket: Again via a specific plugin, yes.
• View, Edit permissions per field, per role, per state in workflow: Not sure what you mean here, but as everything is highly customizable, let's agree on a "maybe" :)
• Ability to set whether a field is required per state in workflow: If I remember correctly, there was a way to define required/optional fields.
• Release / burndown management: Yes, via the Burndown plugin
• Continuous Integration integration (Maven preferred): Here I'm not sure, but I think I've seen a plugin for that as well.

For the other requirements, I'm not 100% sure. But as Trac is open source (it's written in Python), you can always add what you're missing. I did that myself a couple of times (I wrote e.g. the LogViewer Plugin, and integrated Trac with my local environment to do a lot of things via scripts). It's definitely worth a look.

As I've mentioned the plugins that often: Many of them are available via the Tac-Hacks site. Basically, Trac itself provides a solid core, and then you can customize it via plugins the way you need it.