I was looking from the internet for a software that converts a document to pdf format when I found this great free software called pdfcreator. If you're just looking for an alternative for the popular brands of pdf converters, pdfcreator is a worth to try. It has some great features that could match the popular softwares. You will find it very easy use, in just a few clicks you can have your documents converted to pdf. Moreover, it has encryption capabilities, digital signatures, merging of documents and a lot more features.
Some anti-spyware and anti-virus programs are giving false alerts about pdfcreator. To verify you can have it checked by an online anti-virus such as www.virustotal.com or any similar websites where you can submit a file for scanning.