Official listed features:[6]
Full integration with GTK+ 2; Experimental GTK+3 support in 0.4.1 release (disabled by default)
Fast rendering with WebKit
Tabs, windows and session management
Flexibly configurable web search
User scripts and user styles support
Straightforward bookmark management
Customizable and extensible interface
Extension modules can be written in C and Vala
Supports HTML5 on Youtube
Form history, mouse gestures and cookie management.


Midori 0.1.6 passing the Acid3 Test
Midori passes the Acid3 test.
Among the latter features are:[7]
Internationalized domain names support
Extensions
Adblock
Form history
Mouse gestures
Cookie management
Maemo integration for mobile devices
Speed Dial
Feed Panel