PeaZip is available for IA-32 and x86-64 as a standalone portable application and as an installable package for Microsoft Windows, Linux[15][16] (DEB, RPM and TGZ, compiled both for GTK2 and Qt widgetset), and BSD (GTK2).

It is available also as a PortableApps package (.paf.exe)[17] and for Microsoft's winget Windows Package Manager[18] In addition to more popular and general-purpose archive formats including 7z, Tar, Zip, PeaZip supports the ZPAQ, PAQ, and LPAQ formats.

Although not suitable for general use due to high memory usage and low speed, these formats provide better compression ratios for most data structures.

It is a general purpose archiving format supporting compression and multiple volume output.

The intention is to offer a flexible security model through Authenticated Encryption providing both privacy and authentication of data, and redundant integrity checks ranging from checksums to cryptographically strong hashes, defining three different levels of communication to control: streams, objects, and volumes.