Winrar. You can create an executable with it too and the person on the other end, doesn't have to have it installed. Plus, .rar is a better compression format than .zip because you can create smaller archives with it. Regards, Phil Muir Accessibility Training Telephone: US (615) 713-2021 UK +44-1747-821-794 Mobile: UK +44-7968-136-246 E-mail: info@xxxxxxxxxxxxxxxxxxxxxxxxxxx URL: http://www.accessibilitytraining.co.uk/ -----Original Message----- From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Smart Sent: 04 February 2011 22:06 To: ddots-l@xxxxxxxxxxxxx Cc: jsonar@xxxxxxxxxx Subject: [ddots-l] Best File Compression/Archiving Tool? Hi folks. I need to take a quick poll here. Which file compression and archiving format would you say is the most universally accepted? I'm wondering which format to formally support, as in, which one to use when returning things back to clients. It must be: 1. Free for them to extract files 2. PC and MAC compatible and 3. It must support the extraction of multipart archives, i.e. a larger archive split into parts. 4. offer at least a CRC check, or some other form of file integrity checking. I was all set to go with 7-zip, a free zipping program, but it appears to not support multi-volume zip archives. thanks for any suggestions Chris PLEASE READ THIS FOOTER AT LEAST ONCE! To leave the list, click on the immediately following link: ddots-l-request@xxxxxxxxxxxxx?subject=unsubscribe If this link doesn't work then send a message to: ddots-l-request@xxxxxxxxxxxxx and in the Subject line type unsubscribe For other list commands such as vacation mode, click on the immediately following link: ddots-l-request@xxxxxxxxxxxxx?subject=faq or send a message, to ddots-l-request@xxxxxxxxxxxxx and in the Subject line type faq PLEASE READ THIS FOOTER AT LEAST ONCE! To leave the list, click on the immediately following link: ddots-l-request@xxxxxxxxxxxxx?subject=unsubscribe If this link doesn't work then send a message to: ddots-l-request@xxxxxxxxxxxxx and in the Subject line type unsubscribe For other list commands such as vacation mode, click on the immediately following link: ddots-l-request@xxxxxxxxxxxxx?subject=faq or send a message, to ddots-l-request@xxxxxxxxxxxxx and in the Subject line type faq