From FrontPage

Check our Web Sites page as many web platforms now automatically optimize display for mobile devices.

Apps

• AppMakr.  Free with ads or $80/mo.
• AppNRG.  Low cost mobile apps from Do It Yourself ($750) to Customer build with more features from them.
• BiznessApps.  $30 or $60/mo versions.
• Conduit. Free, $40, and $100 levels.
• iBuildApp.  $80/mo, less for under 1K downloads or their branding/advertising
• Mobile Roadie.  Free for an optimized mobile site, $99/mo for a smartphone app, $299 for iPad.
• Roovy.  $149 for submission to the App Store or Google Play, plus $49 monthly for an iPhone app, $99 monthly for a Universal iPhone and iPad app and $99 monthly for an Android app.

For enterprise and consultants

May be sold through other parties or marketers

• AnyPresence. 
• Appcelerator.
• GoMobile.

Resources

• Adobe Shadow.  See how your apps look on iOS and Android. 
• Mobile Marketing Tool recommendations from Larry Chase.