What's This File Type? tells you what a file is, and what program created it. All you have to do is right-click on the file, and select 'Bloody Hell! What's this File Type?' (other text available if you're sensitive).
<p>If you have a file extension and you have no idea which application it is
for, try this search. If we list the software itself we'll show it too.</p>
<p>Enter the file extension to find, with or without a leading period. e.g .doc,
.fll, .rpp, .xml etc.</p>
<form method="POST" action="http://www.downloadpipe.com/fileext.html" name="extension">

<p><font size="1">
<input TYPE="text" name="extdetail" size="17" maxlength="255" value><input class="btn" type="submit" name="extsearch" VALUE="File extension search"></font>
</form>
<p align="left">If more than one application matches, we'll show you a list.</p>
Some further general hints...<ul>
<li><strong>If the extension has a number in it</strong> (e.g.,
.S25) and no entry comes up for that try again using the number &quot;1&quot;
or &quot;01&quot; (e.g., .S01). Often such files are part of a series and only
the lowest five or ten entries in the series will be in the
database.
</li>
<li><strong>If the extension is all numbers</strong> and no entry
comes up try again with .000. Again, often such files are part of a
series.
</li>
<li><strong>If the extension ends with an underscore</strong> (_)
and no entry comes up for the particular extension it's likely that
the file is part of an install set and is a compressed version of a
file with the same first two characters (e.g., an .EXE file in a
compressed install set becomes .EX_).
</li>
</ul>