The service is to convert an Apache's .htaccess to nginx configuration instructions.
First of all, the service was thought as a mod_rewrite to nginx converter. However, it allows you to convert some other instructions that have reason to be ported from Apache to nginx.
Not server instructions (e.g. php_value, etc.) are ignored.
The converter does not check syntax, including regular expressions and logic errors.

This utility was developed as part of Intervals to deal with the problems posed by certain email clients (namely Outlook 2007 and Google Gmail) when it comes to the way they handle styling contained in HTML emails. As many web developers and designers already know, certain email clients are notorious for their lack of CSS support. While attempts are being made to develop common email standards, implementation is still a ways off.
The primary problem with uncooperative email clients is that most tend to only regard inline CSS, discarding all <style> elements and links to stylesheets in <link> elements. Emogrifier solves this problem by converting CSS styles into inline style attributes in your HTML code.

There are a couple of reasons why you’d want to convert local or online HTML files to the plain text format (.txt). Maybe you want to move the files to a device that can’t read or display HTML files properly, or maybe, you’d like to turn multiple HTML documents into a single text document for easier archiving, or, you just need the textual information from the documents to use them for work.
While you can now go ahead and use copy and paste to do that, or go through the source code manually, you may quickly realize that it takes some time to do so. Going through the source code is usually not the best option as you may end up copying HTML tags to the new document which are not interpreted in the plain txt file. Depending on the HTML files structure, you may also have issues copying its textual contents when you view it in a browser.