The free iSumsoft ZIP Password Refixer 4.1.1 download is provided on our software library. Our antivirus system always checks the programs for spyware. It scanned this program and reported that it is virus free. The downloadable file of this latest software version requires 3.6 MB of free space. ISumsoft is the developer of this program. The most popular version of this program that our community members install is 2.0.