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| Dolphin (file manager) | |
|---|---|
Dolphin 25.04.0 | |
| Original author | Peter Penz[1] |
| Developer | KDE |
| Initial release | 2006; 20 years ago (2006) |
| Stable release | 25.04.0[2] |
| Preview release | 24.01.85 (December 20, 2023; 2 years ago (2023-12-20)[3]) [±] |
| Written in | C++ (Qt) |
| Operating system | Unix-like,macOS,Windows |
| Type | File browser |
| License | GPL-2.0-or-later |
| Website | apps |
| Repository | |

Dolphin is afree and open sourcefile manager included in theKDE Applications bundle. Dolphin had become the default file manager of theKDE Plasma desktop environments in thefourth iteration, termedKDE Software Compilation 4.[4] It can also be optionally installed onK Desktop Environment 3. It replacesKonqueror as the default file manager for KDE SC 4, but Konqueror can still be used as an alternative file manager.
Under previous K Desktop Environment versions, Konqueror had served both as the default file manager andweb browser. However, for many years users had been critical of Konqueror as being too complex for simple file navigation. As a response, the two functions were divided into two separate applications. Under KDE SC 4, Dolphin was streamlined for browsing files, while sharing as much code as possible with Konqueror. Konqueror continues to be developed primarily as a web browser.[5]
In 2014, work started on porting Dolphin toKDE Frameworks 5.[6] A Frameworks 5-based version was released as part of KDE Applications 15.08 in August 2015.[7] It was ported toQt 6 and this version was released as a part ofKDE Plasma 6 on 28 February 2024.[8]
As development of the KDE SC 4 version was underway, the K Desktop Environment 3 version of Dolphin was discontinued. However, the program continues to be unofficially available for K Desktop Environment 3 under the slightly modified name of “D3lphin”. D3lphin contains many bugfixes and a newsidebar and is maintained by theTDE project.