The HELP file extension is related to Unix and Unix-based operating systems (OS X, FreeBSD, Linux etc.). The *.help file stores help document bundle with help documents.

Detailed description

Software that works with help file extension

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HELP file extension - Unix help file

What is help file? How to open help files?

The HELP file extension is associated with Unix and Unix-based operating systems, like Mac OS X, Linux, FreeBSD etc.

The *.help extension is used generally for help document bundles that contains sort of documents formatted with HTML markup language complemented by CSS (Cascading Style Sheets), or simple text documents, or documents formatted with roff/troff/nroff/groff Unix document processing systems.

Mime: application/x-helpfile

The default software associated to help file type:

Mac OS X icon

Apple, Inc. logoMac OS X  Apple macOS / Mac OS X software

Company or developer:
Apple, Inc.

OS X or Mac OS X is Unix-based operating system developed by Apple Inc. for Macintosh computers. It contains basic core applications for everyday use, such as Finder basic file manager, Safari for Internet browsing, QuickTime for video, iTunes for managing audio data and iPod, iOS devices management , iMessage instant messaging, Mail, Contacts, Calendar and many more.

The latest version 10.11 of OS X is called El Capitan. It is available to purchase on Mac App Store as well as is distributed with new Mac computers and notebooks. It includes features to improve the security, performance, design and usability.

OS X operating system was replaced by new macOS in 2016!

Unix icon

The Open Group logoUnix  Linux/Unix software

Company or developer:
The Open Group

A multi-tasking operating system for various platforms, the first version of UNIX was released in 1969. It is developed by AT&T as well as various commercial vendors, universities and non-profit organizations. Traditional Original Unix systems have characteristics of Version 7 Unix or UNIX System V. Unix Specification have Mac OS X, Mac OS X Server, Solaris, AIX, HP/UX, z/OS etc. Other systems, such as Linux and BSD are called Unix-like or Unix system-like.

Linux operating systems icon

Various Linux developers logoLinux operating systems  Linux/Unix software

Company or developer:
Various Linux developers

Linux is family of Unix-based operating systems. Linux kernel supports variety of devices such as desktop computers, smart phones, tablet computers, routers, video game consoles etc. Linux is also leading operating system for servers. Linux is available for free in many distributions on the Internet.

Popular distributions for desktops are Ubuntu, Fedora, openSUSE, Debian. For servers are variants of Red Hat, Xandros, Slackware, Debian, SUSE etc.

Operating system for smart phones called Android is also based on Linux. Nokia developed Linux based operating systems for smart phones called MeeGo and Maemo.

Help how to open HELP files:

Use Apple Help Viewer and other similar apps on other Unix-based systems to view content of *.help files.

How to convert file with extension HELP:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

List of recommended software applications associated to the .help file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open help file, edit help file, convert help file, view help file, play help file etc. (if exist software for corresponding action in's database).

  • Others help file

Unspecified and all other actions for computer programs working with help file - Unix help file

Click on the software link(s) for more information. Suggested software applications use help file type for internal purposes and/or also by different way than common edit or open help file actions.

Apple macOS / Mac OS X:


Main software associated with help file by default:
Unix small icon Unix
Linux operating systems small icon Linux operating systems
Other suggested software:
FreeBSD small icon FreeBSD
NetBSD small icon NetBSD
SunOS small icon SunOS

Other operating systems or devices:

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