x11vnc allows one to remotely view and interact with real X displays (i.e. a display corresponding to a physical monitor, keyboard, and mouse) with any VNC viewer. It is designed to be compatible with all Unix variants and Mac OS X, and depends on a small set of standard libraries. It supports SSL/TLS and VeNCrypt encryption, Unix password logins, single port access, Zeroconf, file transfer, and UltraVNC extensions. It is part of the LibVNCServer project.
x2search is a crawler based on machine learning algorithms that finds pages and documents that are similar to given positive and different to given negative examples. The learned classifiers can be exported and saved for later reuse. It features multiple settings for searching by domain/server, etc. and has a plug-in mechanism for adding document types to be searched.
x2vnc is an implementation of the VNC RFB protocol designed to control a machine running a VNC server in a dual-monitor situation. Its effect is to make the controlled machine's display function as if attached to the controlling machine, allowing the use of just one set of input devices on two or more machines.
xAutoClick is an autoclicker application that enables you to automatically click the left mouse button. It is designed to reduce strain on the wrist muscles caused by repetitive mouse clicking, which can lead to serious injury or impairment (RSI, Carpal Tunnel Syndrome, et cetera). By specifying the interval, a random factor and the number of times to click, the program simulates natural clicking.
xCover is a code coverage library for C and C++. It uses non-standard features available with GCC 4.3+ and Visual C++ 7.0+. Users place line-marks in each branch of each function or method in a component's source file, and the library is able to produce, upon request, a report of which of these has not been executed. Reporting can be done on a per-file, per-alias, or per-file-group basis.
The Philips LightFrame2 is a technology for TV-quality video and photo display on a computer monitor. LightFrame(tm) is a combination of hardware and software for Windows. xLightFrame brings almost the same functionality to X. You can highlight the whole screen, or any part of it. This program is useful only on Phlips LightFrame-capable monitors, like the model 109S. It is an independent program that has no relation to or links with Philips. You can use it from the command line, or with help from the companion script lfw.sh.
xNBD is yet another NBD (Network Block Device) server program, which is fully compatible with the NBD client driver in the Linux kernel. In comparison with the original NBD server, it provides possibly better I/O performance by using mmap(), concurrent access from multiple clients, distributed Copy-on-Write disk, and live storage migration for virtual machines.