What are the elements of a team development suite?

For small-to-large teams developing software together, what tools are used to form a comprehensive team development framework?

Specifically, I'm looking for a comprehensive list of all the individual functions involved (e.g. source control, bug management, testing tools, project management), not specific product recommendations. I'm also not restricting the list to a particular methodology (e.g. Scrum).

• Source control (obviously) including branch management
• Issue tracking (features and bugs), possibly with task reassignment and forwarding, and often things like screen recording
• Individual task management, sometimes integrated with the issue tracking system
• Communication software. Some teams use emails and IMs even within the same building or tweets. There are some tools that integrated within the code so you could "chat around a piece of code". Screen and application sharing are also useful.
• Good build tool.
• Distributed pair programming tools if applicable, shared editors otherwise.
• Similar support in case tools.

Less commonly used but promising tools (from academic background), some now have IDE based versions.

• Real-time awareness (prevent nerge conflicts by letting you know somebody is working on the same file before you actually write code)

• In-code social tagging, useful for bootmarking specific items

• In-code contract communication tools (e.g., make a caller aware of special expectations in the invoked method as a way of avoiding errors).