Through our teaching of quantum mechanics, we have found that using computers with physics students is neither trivial nor obvious. We have developed Physlet Quantum Physics in response to our students' educational needs. Our goal has been to develop computer-based material that is adaptable to a wide variety of student learning modes, uses a standard easy-to-understand interface, covers a wide variety of topics, and is informed by current physics education research. We hope to engage students in ways that are fundamentally different from traditional physics problems by requiring the use of multimedia elements in the course of solving the problem. When we ask students what they think of Physlets, or review end-of-semester evaluations, what is striking is how often they mention that Physlet-based exercises help them to visualize quantum mechanics.