As the developer of DiskZIP, I would like to personally present the product in this forum, and ask for product feedback.
The product is commercial, I hope this is not a problem.
It has two components.
File Compression: Plug-in based. Currently ships with two plug-ins. One is based on the 7-Zip stack (version 16.04) with custom handling of RAR archives for improved UNRAR handling compared to stock 7-Zip. Another is based on the Bricolsoft ZIP stack for WinZip compatible ZIPX (de)compression, including JPEG (de)compression. Ticket to fame is the shell namespace extension, which to my knowledge is the only stable implementation for Windows. Actions such as copy/paste, drag/drop, double-click seamlessly compress, extract, view, and even optionally update archives. Advanced actions such as Check-Out are available directly from the shell namespace extension as well. Of course, full right-click integration in File Explorer is also provided. Tasks are started in parallel when underlying SSDs are detected for peak performance. Outlook Add-Ins and Preview Handlers are also available in the base package. Stand-alone archive apps are also present, but these would not stand out in any way.
Disk Compression: Patent-pending. Online and offline modes available. Offline mode includes built in dedup, malware protection (system state as it was last compressed is impregnable to malware, reducing attack surface to changes made since the last compression pass only), and is shown to increase disk read speeds, even on already very fast SSD hardware. An additional benefit discovered after product went to market is disk lifespan increase - in a customer test on identical hardware/software setup, the DiskZIP compressed disk was used 20 times less over a 30 day testing period, according to S.M.A.R.T. results. Offline disk compression can compress and recompress disks on-the-fly, without requiring any external storage. For 100% data protection in the event of unexpected power loss or hardware errors, a Backup Disk may be used. Compressed disks may also be uncompressed as long as space is sufficient. The offline mode can also be used as a generic disk imaging solution, including applications for cloning PC's from one set of hardware to another.
While the software is commercial, gamification offers discount coupons up to 70% - reducing the software cost very substantially. When all benefits are included, the software is a terrific bargain, even without any gamification discounts.
A free trial is available at www.diskzip.com. The trial never expires, is completely unlimited for file compression, but has some limitations for disk compression (one-time offline compression only, and for online compression, ends processing after 1 GB free space is created - although repeatable indefinitely).
I would appreciate feedback on the product, most particularly with the shell namespace extension based file compressor, and the offline disk compressor.
Looking forward to it!