ROS communications-related packages, including core client libraries (roscpp, rospy, roslisp) and graph introspection tools (rostopic, rosnode, rosservice, rosparam).
ROS common_tutorials stack migrated from https://code.ros.org/svn/ros-pkg/stacks/common_tutorials/branches/common_tutorials-0.1/
ROS-independent library for dynamic class (i.e. plugin) introspection and loading from runtime libraries
Allows you to publish the state of a robot (i.e the position of its base and all joints) via the "tf" transform library
Allows one to create "nodelets" -- ROS node-like entities that run within the same process so as to avoid IPC and serialization overhead
A procedural python-based task execution framework with ROS integration.
Contains packages for modeling various aspects of robot information, specified in the Xml Robot Description Format (URDF). The core package of this stack is urdf, which parses URDF files, and constructs an object model (C++) of the robot.
Xacro is an XML macro language. With xacro, you can construct shorter and more readable XML files by using macros that expand to larger XML expressions.
Commonly used messages in ROS. Includes messages for actions (actionlib_msgs), diagnostics (diagnostic_msgs), geometric primitives (geometry_msgs), robot navigation (nav_msgs), and common sensors (sensor_msgs), such as laser range finders, cameras, point clouds.
Packages for common geometric calculations including the ROS transform library, "tf". Also includes ROS bindings for "bullet" physics engine and "kdl" kinematics/dynamics package.