Convert any file format to almost any other format

Forget about all those "Save As" feature (in Microsoft word/Google's Writely/Office 2007 etc..
A simple solution is handy.

Zamzar - a web-based file conversion application handles almost all sorts of file conversions.
For e.g.
Image conversion - bmp to jpeg/gif/tiff/ps and vice versa
Music formats - ac3 to aac/au/mp3/m4a/ogg/wav and vice versa
Video formats - avi to wav/mp3/gif/mpg and more..and of course vice versa
Document formats - doc to png/html/pdf/ps/txt and more..and more.

How does Zamzar works?

All you need to do is:

1. Upload the file
2. Select the conversion format,
   
3. and Enter your email id

The only issue with Zamzar is it's limitation on upload size - i.e. only 100MBs size is allowed, but I hope they will look into this in future.
Overall, a damn cool application

Source : Zamzar, Ashish Sinha Blog