Released: Jan 31, 2011

Updates in this release

Updates in V5.1

• Zip format compatibility improvements and bug fixes. Specifically, compatibility with older zip tools has been increased by making it the default behavior to produce Zip 2.0-compatible archives; this behavior can be changed by the developer.
• Also, the ZipWriter can generate uncompressed zip files that the product's ZipReader can read increasing flexibility (combines the Deflate format and no compression).