a shell command that backs up directory trees and files. It has been tested under Linux, Windows, Solaris, FreeBSD, and NetBSD, and is released under the GNU General Public License (GPL).
Software to detect plagiarism. examines a collection of document files. It extracts the text portions of those documents and looks through them for matching words in phrases of a specified minimum length.
a cross-platform application to download and convert videos from your hard drive or from dozens of video sharing websites like YouTube, Dailymotion, Veoh, Metacafe, etc.
implements Windows kernel API and NDIS API within Linux kernel. A Windows driver for wireless network card is then linked to this implementation so that the driver runs natively, as though it is in Windows, without binary emulation.
the Windows version of the UNIX 'tail -f' command. Used to monitor changes to files; displaying the changed lines in realtime. Uses a plugin architecture, which allows notifications to occur when certain keywords are detected in monitored files. MAPI
Window Switch is a tool which allows you to display running applications on other computers than the one you start them on, programs can be imitated remotely Once an application has been started via a winswitch server, it can be displayed on other machines running winswitch client, as required. Interestingly they seem to support server service with a pay option (security may be a concern)
a free and open source 2D animation/drawing software for Mac OS X, Windows, and Linux. It lets you create traditional hand-drawn animation (cartoon) using both bitmap and vector graphics.
the GNU OCR (Optical Character Recognition) program, implemented as a filter and based on a feature extraction method. It reads images in pbm (bitmap), pgm (greyscale), or ppm (color) formats and produces text in byte (8-bit) or UTF-8 formats...
port of the X Window System server to Windows. It shares the same source code base as Cygwin/X, but does not depend on the Cygwin environment or cygwin1.dll. Xming is a fully featured X11 server for Windows that is very simple to install and use.
visual text file differencing and merging tool for both files and directories. Unicode support. Syntax coloring editor. Windows Shell integration. Regexp filtering. Side-by-side line diff and in-line word diff visualisation.
a program that converts (packages) Python programs into stand-alone executables, under Windows, Linux and Irix. Works with any version of Python since 1.5, it builds smaller executables thanks to transparent compression, it is multi-platform
a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, polynomials, and sets.
a pure Java implementation of the Ruby interpreter is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application.
an open source viewer for Portable Document Format (PDF) files. he Xpdf project also includes a PDF text extractor, PDF-to-PostScript converter, and various other utilities.