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SHIIRA is a web browser based on Web Kit and written in Cocoa. The goal of the Shiira Project is to create a browser that is better and more useful than Safari. All source code used in this software is publicly available.
Shiira supports Safari bookmark integration. You can use Safari bookmarks without importing. Now it supports Firefox, too. Firefox user can switch to Shiira without the hassle of importing/exporting bookmarks.
Check new features here»
Website: SHIIRA