Here are some of the features you can get in Xselerator:
Editor

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* Clear and easy to use IDE;

* XSL/XSLT element and attribute intuitive (like Intellisense or code insight) drop-downs;

* Automatic tag completion - in XSL/XSLT tag completion follows model and, optionally, fills element with mandatory attributes;
* HTML element and attribute intuitive drop-downs;

* Unicode Support
* Full XSL, XSLT, XML and HTML color syntax highlighting (fully customizable);

* All the usual editor capabilities (cut, copy, paste, find, replace) plus special `Copy as RTF` and `Copy as HTML` features allowing syntax highlighting to be preserved when copying and pasting to word-processors, html editors and newsgroups etc.;



XSLT debugger

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* Full stepping capability;

* Breakpoints on both XSLT and input XML;

* Conditional breakpoints;

* View template call stack;

* Watch values (including full XPath expression watches);

* Optional stepping into built-in rules

* Uses MSXML3 transformations (so that debugging session behavior matches a * real, production environment transformation engine);


Transformation

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* One click transformation test;

* Full transformation testing (including XSL parameter passing, start mode and output test path);

* Use of alternative command line transformation engines (e.g. Instant Saxon, XT, etc.)


Wizards

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* For building tables,

* Selects/list boxes and

* XSLT grouping/distinct expressions;


Tools

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* XPath query analyzer (test XPath queries to see the resulting node sets - click on resulting list item to view position to node in source/tree view);

* Project Files Manager, which keeps all your related XML and XSL files together;

* Source edit, tree and browser view (requires IE5.x) modes;

* Files opened history (re-open previous files from menu - re-opened XSLT files restore previous parameters/start mode);

* Print and print preview (with selectable highlighting options);