In a letter to Kotaku, Valve announced their plans to expand beyond just games and offer non-game software through their Steam service. Starting September 5th, Steam will roll out additional software unrelated to gaming. This is in response to their 40 million users asking for more features.
With cloud-syncing and easy updates this seems like a great idea. Check out the full story here.
It would be interesting to see something like Photoshop on Steam especially if it was apart of the workshop. People could share brushes, textures, patterns, fonts…ect. Steam could even install those items for you once you subscribe to them. This could be incredibly helpful stuff!