Mariner was a canceled project to add performance and stability enhancements to the

browser engine A browser engine (#Name and scope, also known as a layout engine or rendering engine) is a core software component of every major web browser. The primary job of a browser engine is to transform HTML documents and other resources of a web page in ...

used in the

Netscape Communicator Netscape Communicator (or ''Netscape 4'') is a discontinued Internet suite produced by Netscape Communications Corporation, and was the fourth major release in the Netscape line of browsers. It was first in beta in 1996 and was released in June 1 ...

web browser A web browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers are used on ...

. Mariner became

open source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...

in March 1998 when

Netscape Netscape Communications Corporation (originally Mosaic Communications Corporation) was an American independent computer services company with headquarters in Mountain View, California and then Dulles, Virginia. Its Netscape web browser was onc ...

released its client code and started the

Mozilla Mozilla (stylized as moz://a) is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, spreads and supports Mozilla products, thereby promoting exclusively free software and open standards, wi ...

project. Mariner added support for page reflow, a feature lacking in previous Netscape releases, making the layout of text and tables much faster. In addition, development work was done on a

Document Object Model The Document Object Model (DOM) is a cross-platform and language-independent interface that treats an XML or HTML document as a tree structure wherein each node is an object representing a part of the document. The DOM represents a document wi ...

(level 1) and stability was improved. Enhancements to

HTML The HyperText Markup Language or HTML is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScri ...

and

CSS Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone techno ...

were also made but these were not technically part of the Mariner project. The original intention was to ship Mariner in Netscape Communicator 5.0, with subsequent releases using the newer NGLayout engine (now called

Gecko Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are found in warm climates throughout the world. They range from . Geckos ar ...

). However, in October 1998, Netscape decided to abandon the old layout engine in favour of NGLayout and work on Mariner ceased. Netscape Communicator 5.0 and Mariner never shipped. The next major Netscape revision (

Netscape 6 Netscape 6 is a discontinued Internet suite developed by Netscape Communications Corporation, and was the sixth major release of the Netscape series of browsers. It superseded Netscape Communicator (4.x), as the release of Netscape Communicato ...

, released in November 2000) was built around Gecko.

External links

Mariner Project Page (no longer updated)
Layout engines Mozilla Netscape {{web-software-stub