Good examples of web based business apps?

Question

I want to get more inspiration and ideas for creating web based business applications. These apps have treeviews, tabs, grid, forms, panels..etc. I develop apps but want to improve my design skills. So I would like to look at very good looking online business apps which have good use of text and background colors, good use of a general theme across the site, good use of white space, groupings and a clean layout.

I am NOT looking for web design templates or how to design a web page using css and columns.

I want to design a business app (semi heavy use of controls) which looks polished and professional.

So if you encountered a business app site or template which you liked, please share.

Business app means something like mint.com or salesforce.com.

Answer 1

these apps are worth checking out for ideas (you can sign up free accounts with all of them)

Invoicing:

• Freshbooks.com - popular
• Invoicemachine.com - polished UI
• Cannybill.com - polished UI
• Blinksale.com
• GetBallpark.com - very slick and new, saw it on reddit a few days ago

Accounting:

• Xero.com - polished UI, they also use lots of ExtJS controls (rare)
• LessAccounting.com

Project management:

• Basecamphq.com - popular

There is lot more at feedmyapp.com

Answer 2

Check out Salesforce.