Shareware and free Open Source Windows Software Applications and free Online Tools

Split PDF Documents, Merge PDF Documents and extract or delete pages from them.  Free PDF Splitter Merger

Document properties and passwords

Document properties such as title, author, subject and keywords can also be set.

Also, the documents can be encrypted with an owner and user password.

Moreover, you can also set the permissions that the user will have (to do this you should have set an owner's password).

Free PDF Splitter Merger - PDF Properties