Is there an application / software for doctors?

[Jenniffer Aguiniga]

My husband is a very busy person. He's a doctor and aside from his duties at the hospital, he has a small clinic. My husband's been really stressed this past few months. When home, he's very irritable and he always brings his work home. I can see him lugging charts, books, journals from our home to the clinic to the hospital. I'd like to help him in some way but I don't know how. Is there a way that I can help him with his work-related stress? Is there an app or software that doctors use for things like charting, billing, etc? It's really preferable that the software or app is widely used and accepted.

[FailFTW]

Microsoft Excel.