E-mail client, 128-bit encryption, TLS, SSL 2, SSL 3, CSS1 enhanced, CSS2 added, XML added, HTML 4.0 added, HTTP 1.1 added, WML added, ECMAScript added, Javascript 1.3 added, Standards compliance enhanced, Cross Platform Core, Memory usage optimized, and Rendering speed enhanced. Opera 4 has so many new features added it's hard to name them all and Opera 4.01 represents a large advance over the last release of Opera. Opera 4.01 includes new features like name completion, it fills out current features like plug-in handling and JavaScript plus, it optimizes and adjusts items already in the program. We recommend you upgrade to 4.01.
