Mercury Editor
Mercury is a full featured HTML5 editor. It was built from the ground up to help your team get the most out of content editing in modern browsers. Mercury comes bundled as a Rails Engine, so just include it in your Gemfile. Or download the current bundled package if you're not using Rails. We don't inject javascript or css into your production pages so you're free to use whatever frameworks you want without having to worry about conflicts. Easily add or remove toolbar items or create entirely new tools. Any toolbar item can be tied to an action using behaviors and the command pattern. Full HTML, Simple, Markdown, Snippet and Image regions are supported by default, but you can just extend the base regions to build your own types. Built on top of the HTML5 contentEditable features, it natively supports the all the fancy new HTML5 elements, syntax, and JavaScript APIs.
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openElement
openElement is a free website building application with a WYSIWYG interface ("What You See Is What You Get"). The software automatically generates the necessary code for a website to display and function correctly, without the creative constraints imposed by other tools. The benefit to users is a simpler approach for beginners and a faster approach to repetitive tasks for professionals. The concepts of "elements" and "packs" allow users to insert, modify, and customize commonly used web objects by simply dragging & dropping them onto pages - without writing any code. That said, users are not confined by the built-in elements: you can create, reuse, and share your own custom elements. openElement is a hybrid between a CMS and a standalone app. It really stands apart from other applications of its type. It works through an internal intermediary format that facilitates content updates, and maintains the structure and consistency of the resulting code.
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ProseMirror
Rich content editors should, ideally, produce clean, semantically meaningful documents while still being easy for users to understand. ProseMirror tries to bridge the gap between editing explicit, unambiguous content like Markdown or XML, and classical WYSIWYG editors. It does this by implementing a WYSIWYG-style editing interface for documents more constrained and structured than plain HTML. You can customize the shape and structure of the documents your editor creates, and tailor them to your application's needs. ProseMirror has built-in, ground-up, rock solid support for collaborative editing, where multiple people work on the same document in real time. Document schemas allow editing documents with a custom structure without writing your own editor from scratch. A modular architecture makes sure you only load the code you need, and can replace parts of the system as needed. A plugin system allows you to easily enable additional functionality.
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Easy Web Editor
With Easy Web Editor, you won't get bogged down with hundreds of files and links. You're free to concentrate on the design and content of your web site! EasyWebEditor is the professional WebSite creator software both feature rich and designed to save you time and effort. Fully visual, no code / HTML, so it is fine also for novices. You can manage a whole site at once (no need to memorize file names, no need to continuously load and save pages, as you act on a whole document, even for searches and revisions). You can host anywhere, no server hosting restrictions, the product is fine for both Windows and Unix / Linux servers, any web space (some other editors are limited to a single hosting brand). The environment is also optimized for maximum editing speed, as your time is precious, simultaneous browsing and editing (you can browse links with a double click), visual linking (you select the link destination with active previews, even when you show separate popup windows).
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