O'Reilly is launching Safari, a Web-based subscription service for technical books.

The service has a range of subscription levels, from five titles for $9.95 per month to 85 titles for $62.95 per month. More books can be added as required. Books can also be swapped for others after one month.

The first two books from the O'Reilly collection to go online will be Learning Cocoa and Learning Carbon. Both titles, which would normally cost $39, are part of the Apple Developer Connection Recommended Titles.