Mozilla Composer
HTML editor and web authoring module of the Mozilla Application Suite
Mozilla Composer is the former free and open-source HTML editor and web authoring module of the Mozilla Application Suite (the predecessor to SeaMonkey). It was used to create and to edit web pages, e-mail, and text documents, and available for Windows, macOS and Linux. Composer was a graphical WYSIWYG HTML editor to view, write and edit HTML source code.
In September 2008 Daniel Glazman announced a new WYSIWYG HTML editor, BlueGriffon, written from scratch and based on Mozilla Gecko and XULRunner.
SeaMonkey, the community-driven successor to Mozilla Suite, includes an HTML editor named Composer that is developed from the Mozilla Composer code contained in the original Mozilla Suite.
Nvu
Nvu (pronounced "N-view") is a WYSIWYG HTML editor, based on Mozilla Composer. It is intended to be an open-source alternative to proprietary software like Microsoft Expression Web and Adobe Dreamweaver. As a WYSIWYG editor, it is designed to be easy for novice users, and does not require any knowledge of HTML or CSS to use. It runs on Mac OS X, Windows and Linux and incorporates Cascading Style Sheets support and other improvements from software company Disruptive Innovations. Nvu was the brainchild of Kevin Carmony, CEO for Linspire, who wanted an easy-to-use, WYSIWYG HTML editor for Linux users.
“Mozilla Composer” enters the record as hTML editor and web authoring module of the Mozilla Application Suite. Crown Archives preserves that source wording while asking what Mozilla, Composer and HTML can confirm, complicate or overturn.
Why this record matters
“Mozilla Composer” is worth following because a concise public description often conceals a longer documentary argument. Here, Mozilla, Composer and HTML provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 12, 2026. The linked authority identifier is Q2703374. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2008.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
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- Expand the search: follow Mozilla Composer primary sources, Mozilla Composer archive and Mozilla research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Mozilla Composer” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.