SpaceX develops some of the most advanced space flight technology in the world. As humanity seeks to colonize Mars and, perhaps, beyond our current technology will certainly undergo some major overhauls. The examples below, though, serve as an effective snapshot of the current state of technology, and may even represent some of the tech that manned missions to Mars will employ. See Future Goals for an idea of where this technology may be headed in the future.
"Dragon." SpaceX, Space Exploration Technologies Corp., 2017, http://www.spacex.com/dragon.
"Falcon Heavy." SpaceX, Space Exploration Technologies Corp., 2017, http://www.spacex.com/falcon-heavy.
“Falcon 9.” SpaceX, Space Exploration Technologies Corp., 2017, www.spacex.com/falcon9.