KDocker Alternatives
KDocker is described as *'will help you dock any application into the system tray. This means you can dock Openoffice, xmms, Firefox, Thunderbird, anything!
Just point and click. Works for all NET WM compliant window managers - that includes KDE, GNOME, Xfce, Fluxbox and many more'* and is an app. There are more than 10 alternatives to KDocker for a variety of platforms, including Windows, PortableApps.com, Linux, Thunderbird and X11. The best alternative is SmartSystemMenu, which is both free and Open Source. Other great apps like KDocker are RBTray, 4t Tray Minimizer, DM2 and Clicky Gone.
SmartSystemMenu extends system menu of all windows in the system. It appends next custom items to menu:
Features
Allows almost any program to be minimized to the system tray by right clicking its minimize button.
Features
DiscontinuedLast update is from 2015 but the project has been forked: https://github.com/benbuck/rbtray
4t Tray Minimizer is a lightweight but powerful window manager, which helps you to free up space on the desktop and the taskbar via the following actions:
DM2 provides several Windows enhancements that may help in every-day work. One of the nicest and most popular features of DM2 is minimizing windows to floating icons® (unique feature!) freeing both task bar and tray bar space.
Features
DiscontinuedLast version is from 2007
Clicky Gone allows you to hide your selected windows from view, this includes the taskbar button associated with the application. This utility particularly helps with protecting your privacy by hiding things like your browser with banking details up and someone walks in on you.
Features
Hide your running applications from Dock.
TrayIt! - minimize to the system icon tray any program (Outlook Express, Notepad, Word, Internet Explorer, Sunbird, Thunderbird, Opera, OpenOffice etc.) and get more room in the Taskbar!
Features
DiscontinuedThe official website is no longer available. Last version, 4.6.5.5, released on June 2008, can be still downloaded from Softpedia.
TopMenu is a functionality clone of PowerMenu, but designed to be compatible with Windows 7 and 64-bit systems.
Features
- Free • Open Source
15 alternatives to stalonetray- Linux
- openSUSE
- Arch Linux
- Openbox
- Fedora
- Ubuntu
- Compiz
- Debian
- X11
- Enlightenment
- Xmonad
Stalonetray is a stand-alone system tray (notification area) for X Window System/X11. Working with virtually any EWMH-compliant window manager, it has minimal build and run-time dependencies (X11 lib only). Complete XEMBED support under development.
Features
- Free • Open Source
15 alternatives to FireTray- Windows
- Linux
- Waterfox
- Pale Moon
- Thunderbird
- SeaMonkey
- Firefox
FireTray is system tray extension for Linux and Windows that targets Mozilla Firefox, Thunderbird and SeaMonkey.
Features
DiscontinuedThe developer announced in December 2015 that the extension was no longer developed: https://foudil.fr/blog/209/the-web-is-not-the-platform/ The extension still works on XUL-based Firefox forks like
Waterfox and 
Pale Moon