AveDesk!

Conky is a free, light-weight system monitor for X, that displays any kind of information on your desktop. Originally a fork of Torsmo, Conkys torsmo-based code is BSD licensed. New code in Conky has been licensed under the GPL 3.0.

How many times have you walked up to a system in your office and needed to click through several diagnostic windows to remind yourself of important aspects of its configuration, such as its name, IP address, or operating system version If you manage multiple computers you probably need BGInfo. It automatically displays relevant information about a Windows computer on the desktops background, such as the computer name, IP address, service pack version, and more. You can edit any field as well as the font and background colors, and can place it in your startup folder so that it runs every boot, or even configure it to display as the background for the logon screen. »

Plasma Workspaces is the umbrella term for all graphical environments provided by KDE. Plasma separates components into "data engines" and their visualization counterparts. This is intended to reduce the total programming effort when there are multiple possible visualizations of given data; and to make it easier for the data engine and the workspaces to be written independently. Currently there are three workspaces being developed: Plasma Desktop for traditional desktop PCs and notebooks, Plasma Netbook for netbooks, and Plasma Active for tablet PCs and similar devices. »

XWidget is a free desktop customization platform. It’s light, handy with powerful visual widget editor and very subtle animations. The Android page is found here: http://android.xwidget.com/

8GadgetPack makes it possible to use gadgets on Windows 8 / 8.1 / 10.

BGINFO for X, also called BGINFO4X, is a clone of the popular program BGINFO for Windows created by Sysinternals.You can refer it as BGINFO for Linux, BGINFO for Unix, or BGINFO for X-Windows, which has derived to BGINFO4X (BGINFO for X).

Nerdtool allows you to display many things directly on top of your desktop; weather reports, headline news, and system vitals are just a few uses.

gDesklets is an architecture for "desklets", which are tiny applets sitting on your desktop in a symbiotic relationship of eye candy and usefulness.

Dashboard is an application for Apples Mac OS X operating systems, used for hosting mini-applications known as widgets. First introduced in Tiger, it is a semi-transparent layer that is invisible to the user unless activated by clicking its icon in the Dock. Alternatively, the user can invoke Dashboard by moving the cursor into a preassigned hot corner, or by pressing a hot key, both of which can be set to the users preference.

Easily convert millions of web widgets, games and videos – designed to live on home pages, blogs or social network profiles – into gadgets for your Sidebar. If you like widgets on the web, you’ll love them on your Sidebar.

Desktop iCalendar is a handy desktop calendar for Windows. It stays on your desktop and shows the days of the current month. It can sync with your Google Calendar, share calendars with your family and friends. It also uses high-quality fonts, looks pretty, and has lots of skins.

myBoard is a Windows port of Mac OS X dashboard. It is an application for Windows operating systems, used for hosting mini-applications known as magnets.

Cysboard - A lightweight system monitor similar to conky with html and css for themes