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Software Requirements
Specification
1. Introduction
1.1 Purpose
The present document is a software requirements specification document for PeaZip ,
version 2.7.1. PeaZip is a general purpose file and archive manager application for a computer
system, aiming to provide a cross-platform graphical interface for many Open Source archiving and
compression utilities, so that its user would be able to handle most of the available archiving
formats(indicatively: 7z,RAR,ZIP. Full list of the supported formats is provided in following
chapters).
This document follows “Software Requirements Specification” template for software
requirements specification documents, by Karl E. Wiegers, with a few declensions.
1.2 Document Conventions
The present document concerns software engineers that would work on further
development of this piece of software, as well as clients/users of PeaZip.
This is the only document so far describing PeaZip’s software requirements. It should be
used by software engineers who will develop this piece of software and it should be used for
formalization of the software that is going to be delivered to clients/users. Every future change in
the requirements of this software should be made through a typical procedure of change and final
acceptance of this document.
Software engineers should ask for further explanation or clarification, if and wherever they
decide this is necessary and should not proceed to modifications without the approval of the final
client/user.
1.3 Intended Audience and Reading Suggestions
This document applies to programmers of this project, to software engineers that weal work
on its further development and, finally, to the end users of this application and it aims at displaying
the features of PeaZip version 2.7.1, as well as at providing information about the goals and the
proper use of the software.
Chapters that would interest users are: 3, 4 and 6, whereas the whole document would be
of interest for software engineers and programmers.
1.4 Project Scope
The piece of software to which the present document refers, is a file and archive manager
application for a computer system, that offers user the capability of archiving,compressing and
extracting (decompressing) files and archives.
In brief, the basic functions that PeaZip features are:
Creating compressed archives, updating compressed archives, extracting content of compressed
archives, file and archive management tools(robust copy, split and join, fast or secure deletion,
byte to byte comparison, calculation of a wide set of checksums and hashes over selected files),
append timestamp to archive name(useful for archiving and backup purpose) and two factor
authentication(password and keyfile) for the managed archives. All pre-mentioned functions’
parameters can be modified and adapted to user’s needs and preferences from a settings’ menu.
The initial goal of this application was creating a frontend for Pea archiving utility. However,
after completing PeaZip’s GUI, support to many mainstream archiving and compression formats
was added to PeaZip. In this way, PeaZip became an aggregate frontend GUI for a set of Open
Source archiving and compression utilities(full list of which is provided in following chapters). The
fact that this application is Open Source software, gives its users the chance to directly take part in
its development, as well as notice possible bugs or mistakes and make their suggestions on it.
2. Overall Description
2.1 Product Perspective
Peazip was created for file and archive management in a computer system. The initial goal
of the application was to function as frontend for Pea archiving utility(which was also developed by
PeaZip’s creator, Giorgio Tani). However, after completing the development of PeaZip UI, support
to more archiving and compression formats (full list of which is provided in following chapters) was
added to PeaZip, allowing it to function as a single, consistent frontend GUI, which exposes a list
of options of the underlying applications.
PeaZip works similarly to a large group of well-known applications, like WinRAR and
WinZip. PeaZip features, to a large degree, the same features with the applications of this group
and in addition, it supports a wide range of archiving and compression formats(superset of the
supported by each application of the pre-mentioned group set)as well as some file and archive
management tools(which are mentioned explicitly in following chapters), while at the same time it
offers its users the capability of executing its functions as command prompt commands(resulting
commands can be extracted and saved in a text file), allowing them to monitor any running activity
in real-time.
An important attribute of PeaZip is its self-standingness and its independency from the kind
of the Operating System of the computer system on which it runs. In no case is the installation of
any other program required for PeaZip to work, while for cases that no system integration is
preferred, PeaZip Portable is available as standalone application, not needing installation and not
modifying the host system.

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