We want our collaborative development environment to be simple, fast, reliable, and scalable, so we only offer tools that are aligned with those goals. This way, we can manage and support the tools we offer in a scalable manner.
If you need more tools, you might choose to run them yourself on your own servers, or you might make use of individual tools that are offered by other project-hosting sites. You can loosely integrate with other tools and websites by linking to them from your project-summary page.