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Konqueror is a
free and open-source Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software where anyone is freely licensed to use, copy, study, and change the software in any way, and the source ...
web browser and file manager that provides
web Web most often refers to: * Spider web, a silken structure created by the animal * World Wide Web or the Web, an Internet-based hypertext system Web, WEB, or the Web may also refer to: Computing * WEB, a literate programming system created by ...
access and file-viewer functionality for file systems (such as local files, files on a remote FTP server and files in a disk image). It forms a core part of the KDE Software Compilation. Developed by volunteers, Konqueror can run on most Unix-like operating systems. The
KDE KDE is an international Free software movement, free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-know ...
community licenses and distributes Konqueror under GNU GPL-2.0-or-later. The name "Konqueror" echoes a colonization paradigm to reference the two primary competitors at the time of the browser's first release: "first comes the Navigator, then Explorer, and then the Konqueror". It also follows the
KDE KDE is an international Free software movement, free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-know ...
naming convention: the names of most KDE programs begin with the letter K. Konqueror first appeared with version 2 of KDE on October 23, 2000. It replaces its predecessor, KFM (KDE file manager). With the release of KDE 4, Dolphin replaced Konqueror as the default KDE file manager, but the KDE community continues to maintain Konqueror as the default KDE web browser.


Major supported protocols

Konqueror can utilize all
KIO KIO (KDE Input/Output) is a system library incorporated into KDE Frameworks 5 and KDE Software Compilation 4. It provides access to files, web sites and other resources through a single consistent API. Applications, such as Konqueror and Dolp ...
slaves installed on the user's system. Some examples include: * FTP and SFTP/SSH browser *
Samba Samba (), also known as samba urbano carioca (''urban Carioca samba'') or simply samba carioca (''Carioca samba''), is a Brazilian music genre that originated in the Afro-Brazilian communities of Rio de Janeiro in the early 20th century. Havin ...
(Microsoft file-sharing) browser * HTTP browser * IMAP mail client * ISO (CD image) viewer *
VNC Virtual Network Computing (VNC) is a graphical desktop-sharing system that uses the Remote Frame Buffer protocol (RFB) to remotely control another computer. It transmits the keyboard and mouse input from one computer to another, relaying the g ...
viewer A complete list is available in the KDE Info Center's Protocols section.


User interface

Konqueror supports
tabbed document interface In interface design, a tab is a graphical user interface object that allows multiple documents or panels to be contained within a single window, using tabs as a navigational widget for switching between sets of documents. It is an interface ...
and Split views, wherein a window can contain multiple documents in tabs. Multiple document interfaces are not supported, however it is possible to recursively divide a window to view multiple documents simultaneously, or simply open another window. Konqueror's user interface is somewhat reminiscent of Microsoft's Internet Explorer, though it is more customizable. It works extensively with "panels", which can be rearranged or added. For example, one could have an Internet bookmarks panel on the left side of the browser window, and by clicking a bookmark, the respective web page would be viewed in the larger panel to the right. Alternatively, one could display a hierarchical list of folders in one panel and the content of the selected folder in another. Panels are quite flexible and can even include, among other KParts (
component Circuit Component may refer to: •Are devices that perform functions when they are connected in a circuit.   In engineering, science, and technology Generic systems *System components, an entity with discrete structure, such as an assemb ...
s), a console window, a text editor, a media player. Panel configurations can be saved, and there are some default configurations. (For example, " Midnight Commander" displays a screen split into two panels, where each one contains a folder, Web site, or file view.) Navigation functions (back, forward, history, etc.) are available during all operations. Most keyboard shortcuts can be remapped using a graphical configuration, and navigation can be conducted through an assignment of letters to nodes on the active file by pressing the control key. The address bar has extensive autocompletion support for local directories, past
URL A Uniform Resource Locator (URL), colloquially termed as a web address, is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it. A URL is a specific type of Uniform Resource Identifie ...
s, and past search terms.


Web browser

Konqueror has been developed as an autonomous web browser project. It uses KHTML as its browser engine, which is compliant with HTML and supports JavaScript, Java applets,
CSS Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone techno ...
,
SSL SSL may refer to: Entertainment * RoboCup Small Size League, robotics football competition * ''Sesame Street Live'', a touring version of the children's television show * StarCraft II StarLeague, a Korean league in the video game Natural language ...
, and other relevant
open standard An open standard is a standard that is openly accessible and usable by anyone. It is also a prerequisite to use open license, non-discrimination and extensibility. Typically, anybody can participate in the development. There is no single definition ...
s. An alternative layout engine, ''kwebkitpart'', is available from the Extragear. While KHTML is the default web-rendering engine, Konqueror is a modular application and other rendering engines are available. Especially the WebKitPart that uses the KHTML-derived WebKit engine has seen a lot of support in the KDE 4 series. One thing to note, is when the KHTML rendering backend is chosen, the user can choose to make a full archive of any given webpage, which is stored in an archive file with the ".war" extension. Konqueror integrates several customizable search services which can be accessed by entering the service's abbreviation code (for example, gg: for Google, or wp: for Wikipedia) followed by the search term(s). One can add their own search service; for instance, to retrieve English Wikipedia articles, a shortcut may be added with the URL http://en.wikipedia.org/wiki/Special:Search?search=\&go=Go. KHTML's rendering speed is on par with that of competing browsers, but sites with customized JavaScript are often problematic due to KHTML's much smaller mind- and market-share, resulting in fewer JavaScript features built into the JS engine.
Kubuntu Kubuntu ( ) is an official flavor of the Ubuntu operating system that uses the KDE Plasma Desktop instead of the GNOME desktop environment. As part of the Ubuntu project, Kubuntu uses the same underlying systems. Kubuntu shares the same repositor ...
's 10.10 Maverick Meerkat release switched the default browser from Konqueror to rekonq, as well as a Firefox installer being added. Kubuntu subsequently switched from rekonq to Firefox, with the release of 14.04 Trusty Tahr.


File manager

Konqueror also allows browsing the local directory hierarchy—either by entering locations in the address bar, or by selecting items in the file browser window. It allows browsing in different views, which differ in their usage of icons and layout. Files can also be executed, viewed, copied, moved, and deleted. The user can also open an embedded version of
Konsole Konsole is a free and open-source terminal emulator graphical application which is part of KDE Applications and ships with the KDE desktop environment. Konsole was originally written by Lars Doelle. It ls licensed under the GPL-2.0-or-later and t ...
, via KDE's KParts technology, in which they can directly execute shell commands. In addition to the Konsole KPart, Konqueror can also use a Filelight KPart, to view a radial diagram of the user's filesystem. Although this functionality has not been removed from Konqueror, as of KDE 4, Dolphin has replaced Konqueror as the default file manager. Dolphin can – like Konqueror – divide each window or tab into multiple panes. Konqueror makes more powerful use of this feature, allowing as many vertically and horizontally divided panes as desired. Each can link to different content or even remote locations, so that Konqueror becomes a powerful graphical tool to manage content on multiple servers all in one window, "
dragging and dropping In computer graphical user interfaces, drag and drop is a pointing device gesture in which the user selects a virtual object by "grabbing" it and dragging it to a different location or onto another virtual object. In general, it can be used to ...
" files between locations. Konqueror 20.12.2 file manager screenshot.png, Konqueror's file manager Konqueror 20.12.2 start screen.png, A screenshot of Konqueror 20.12.2 showing the default homepage Konqi-audiocd.png, Konqueror displaying the contents of an audio CD


File viewer

Using the KParts object model, Konqueror executes components that are capable of viewing (and sometimes editing) specific filetypes and embeds their client area directly into the Konqueror panel in which the respective files have been opened. This makes it possible to, for example, view an OpenDocument (via Calligra) or
PDF Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems. ...
document directly within Konqueror. Any application that implements the KParts model correctly can be embedded in this fashion. KParts can also be used to embed certain types of multimedia content into HTML pages; for example, the KMPlayer KPart enables Konqueror to show embedded video on web pages.


KIO

In addition to browsing files and web sites, Konqueror utilizes
KIO KIO (KDE Input/Output) is a system library incorporated into KDE Frameworks 5 and KDE Software Compilation 4. It provides access to files, web sites and other resources through a single consistent API. Applications, such as Konqueror and Dolp ...
plugins to extend its capabilities well beyond those of other browsers and file managers. It uses components of KIO, the KDE I/O plugin system, to access different protocols such as HTTP and FTP (support for these is built-in), WebDAV, SMB (Windows shares), SFTP and FISH (a handy replacement to the latter when the SFTP subsystem is disabled on the remote host). Similarly, Konqueror can use KIO plugins (called IOslaves) to access
ZIP file ZIP is an archive file format that supports lossless data compression. A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the ...
s and other archives, to process ed2k links (edonkey/emule), or even to browse
audio CDs The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then released in October ...
, ("audiocd:/") and
rip Rest in peace (RIP), a phrase from the Latin (), is sometimes used in traditional Christian services and prayers, such as in the Catholic, Lutheran, Anglican, and Methodist denominations, to wish the soul of a decedent eternal rest and peace. ...
them via drag-and-drop. Likewise, the "man:" and "info:" IOslaves can be used to fetch man and info formatted documentation.


Konqueror Embedded

An embedded systems version, Konqueror Embedded i
available
Unlike the full version of Konqueror, Embedded Konqueror is purely a web browser. It does not require
KDE KDE is an international Free software movement, free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-know ...
or even the X window system. A single static library, it is designed to be as small as possible, while providing all necessary functions of a web browser, such as support for HTML 4,
CSS Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). CSS is a cornerstone techno ...
, JavaScript, cookies, and
SSL SSL may refer to: Entertainment * RoboCup Small Size League, robotics football competition * ''Sesame Street Live'', a touring version of the children's television show * StarCraft II StarLeague, a Korean league in the video game Natural language ...
.


Download Manager

KGet is a
free Free may refer to: Concept * Freedom, having the ability to do something, without having to obey anyone/anything * Freethought, a position that beliefs should be formed only on the basis of logic, reason, and empiricism * Emancipate, to procur ...
download manager for
KDE KDE is an international Free software movement, free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-know ...
and is the default download manager for Konqueror. It is part of the KDE Network package. By default it is the download manager used for Konqueror, but can also be used with
Mozilla Firefox Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and a ...
and Chromium-based web browsers as well as rekonq. KGet was featured by ''
Tux Magazine ''Tux Magazine'' was an American Linux magazine aimed at Linux desktop end users, specifically those who use the KDE desktop environment. The mission of the magazine was to help Linux take over the desktop market. It was headquartered in Seattle, ...
'' and '' Free Software Magazine''.


History

On KDE 3, KGet 0.8.x, 1 supported HTTP/FTP download. On KDE Software Compilation 4, KGet 2 was released; it supported bandwidth throttling segmentation, multi-threading, and the BitTorrent protocol.


Features

*Downloading files from FTP, HTTP(S) and BitTorrent sources. *Pausing and resuming of downloading files, as well as the ability to restart a download. *Gives of information about current and pending downloads. *Embedding into
system tray A taskbar is an element of a graphical user interface which has various purposes. It typically shows which programs are currently running. The specific design and layout of the taskbar varies between individual operating systems, but generally a ...
of the host system. *Integration with the KDE Konqueror and Rekonq web browsers. *
Metalink Metalink is an extensible metadata file format that describes one or more computer files available for download. It specifies files appropriate for the user's language and operating system; facilitates file verification and recovery from data ...
support which contain multiple URLs for downloads, along with checksums and other information. *Automatically tags downloaded files with download information (such as the download URL) using
Nepomuk Nepomuk (; german: Pomuk) is a town in Plzeň-South District in the Plzeň Region of the Czech Republic. It has about 3,700 inhabitants. It is known as the birthplace of Saint John of Nepomuk, who was born here around 1340 and whose statue can be ...
. *Download from multiple servers to speed up download time (segmented file transfer).


See also

* Comparison of file managers *
Comparison of web browsers General information Basic general information about the browsers. Browsers listed on a light purple background are discontinued. Platforms with a yellow background have limited support. Operating system support Browsers are compiled to run o ...
*
Comparison of download managers Comparison or comparing is the act of evaluating two or more things by determining the relevant, comparable characteristics of each thing, and then determining which characteristics of each are similar to the other, which are different, and t ...
* KHTML * KJS * KSVG *
List of web browsers The following is a list of web browsers that are notable. Historical Layout engines * Gecko is developed by the Mozilla Foundation. ** Goanna is a fork of Gecko developed by Moonchild Productions. * Servo is an experimental web brow ...
* rekonq *
KIO KIO (KDE Input/Output) is a system library incorporated into KDE Frameworks 5 and KDE Software Compilation 4. It provides access to files, web sites and other resources through a single consistent API. Applications, such as Konqueror and Dolp ...


References


External links

*
Konqueror Embedded homepage
{{Download managers 1996 software Applications using D-Bus Cross-platform web browsers Free file managers Free web browsers KDE Applications POSIX web browsers Software using the GPL license Web browsers that use Qt