Opera opened its mobile app store for business Tuesday morning, serving up programs for the Android, Symbian, BlackBerry, Palm, Symbian and Windows Mobile platforms.

The store is a joint effort between Opera and Appia, an e-commerce platform that powers the Samsung, Verizon, T-Mobile and Yahoo app marketplaces, among others. In its pre-launch version, the Opera mobile store saw more than 15 million users and 700,000 downloads a day, according to the press release from Appia.

Noticeably absent from the offerings in the Opera app store are any programs for Apple’s iOS. According to a report from PCMag, Opera communications manager Falguni Bhuta said that users will be able to click on links for iOS apps that link to Apple’s App Store in the near future.

The store is set to automatically detect your platform, local currency and language when you visit on your mobile browser. Most of the apps on the store right now are free, for the moment.

In concert with its store opening Tuesday, Opera also launched the Opera Publisher Portal for developers to post their apps to the store. You can visit the store from your phone at mobilestore.opera.com.

Opera’s launch comes as Amazon reportedly prepares to launch its own store for mobile applications later this month. The Amazon Appstore will only support Android apps at launch.

Related Stories:

Apple's taking 30 percent of app store subscriptions is an unkind cut

Google activates 'kill switch' to remove Android malware

Google demonstrates Android's Honeycomb tablet version, brings Android Market to the Web