What are some alternatives?
When comparing MConverter and Zamzar, you can also consider the following products
Convertio - File Conversion in the Cloud
Online Convert - Convert files like images, video, documents, audio and more to other formats with this free and fast online converter.
CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
online2pdf.com - This Online PDF Converter can convert all your files to PDF but also compress and merge PDF files! Word, Excel, PowerPoint, images and any other kind of document can be easily converted to PDF on Online2PDF.
Format Factory - Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
Free File Converter - Using Free File Convert you can convert your files into different formats.