ZipForge

ZipForge is an advanced Delphi ZIP component, written completely in Delphi. It doesn't require any DLLs. ZipForge features include SFX archives support, repair, encryption, unicode filenames support, Zip64, splitting and multi-spanning support. Full source code is available.
ZipForge includes our new unique technology, a transaction system.
This innovative solution gives you a fast and easy way of updating archive files providing data integrity like a reliable database system.
Key features:
- Creates archive files in wide known ZIP format by PKZIP, Inc.
- Native VCL; no DLLs; no OCXs
- Adds, moves, extracts, deletes, updates, tests, refreshes a group of files by a single operation
- Free for personal use
- Creates self-extracting (SFX) archives
- Performs regularly archive updates using transactions that allows canceling all modifications at any time in case of some failures. Also this technology optimizes the speed of the archive modification
- Compresses large files with low memory consumption
- Comprehensive help; lots of demos
- Repairs damaged archives
- Zip64 format is supported; maximum archive size is 2^63 bytes
- Archive splitting and multiple disk spanning support