OmniWeb was originally developed by Omni Group for the
NeXTSTEP platform and was released by
Lighthouse Design on March 17, 1995, after only one month's development. As NeXTSTEP evolved into
OPENSTEP and then Mac OS X, OmniWeb was updated to run on these platforms. These early versions of OmniWeb also run on
Microsoft Windows through the
Yellow Box or the OpenStep frameworks. After
Sun Microsystems bought Lighthouse Design, the Omni Group released the product from version 2.5 onwards. From version 4.0 onwards, OmniWeb was developed solely for the OS X platform. OmniWeb was developed using the
Cocoa API, which allows it to take full advantage of OS X features. It uses
Quartz to render images and smooth text. It uses multiple processors, if available, and features an interface that uses
Aqua UI features such as drawers, sheets, and customizable toolbars. The Omni Group originally employed its proprietary
HTML layout engine that uses standard API
NSText components. However, this engine was very slow, particularly when scrolling, and was not fully compatible with the most recent
web standards, such as
Cascading Style Sheets. In OmniWeb version 4.5, the Omni Group adopted
Apple's KHTML-based
WebCore rendering engine, which was created by Apple for its
Safari browser. On August 11, 2004, the Omni Group released version 5.0 of OmniWeb, which added several new features. The most notable addition was an unusual implementation of
tabbed browsing, in which the tabs are displayed vertically in a drawer on the side of the window (including optional thumbnail pictures of the pages.) Despite controversy over the merits of a tab drawer over a tab toolbar, the feature persists through the final version. On September 7, 2006, version 5.5 was released. Major new features include the use of a custom version of
WebKit instead of WebCore,
universal binary support, saving to the
web archive, support for user-defined
style sheets, a "Select Next Link" feature,
FTP folder display, ad-blocking improvements, updated
localizations, and many other small changes and bug fixes. OmniWeb was Omni Group's flagship app, but as OS X web browsers improved—Apple eventually bundled Safari into OS X— and Omni successfully introduced other products such as
OmniGraffle and
OmniOutliner, OmniWeb's importance diminished. OmniWeb's price was successively lowered, first to $39.95, then on February 24, 2009, Omni Group announced that OmniWeb would be made available for free, a change from its previous price of $14.95. ==Features==