Cross-platform file replication and synchronization. Used for secure off-site backup, sync of satellite offices and distribution of content. Bandwidth efficient for real-time or scheduled replication of large files and large numbers of files

Cross Platform Toolkit Library (xtklib) is a C++ based framework for highly object-oriented cross-platform programming.

Mures project is a cross-platform clone of Segas "Chu Chu Rocket", a multi-player puzzle game. It is written in C using SDL. Multi-player is handled through a client-server design that supports multiple players per client..

Universal Password Manager is a cross platform password manager. Over the years Ive used a number of different password managers but I never quite found one that gave me everything I needed. At work I use MS Windows but at home I use a Mac.

PythonCard is a GUI construction kit for building cross-platform desktop applications on Windows, Mac OS X, and Linux, using the Python language. The PythonCard motto is "Simple things should be simple and complex things should be possible.

SocketW project is a cross platform (Linux/FreeBSD/Unix/Win32) streaming socket C++ library designed to be easy to use. It supports Unix sockets and TCP/IP sockets with optional SSL/TLS (OpenSSL) support.

LightBlue is a cross-platform Python Bluetooth API. It is available for Mac OS X, GNU/Linux and Nokias Python for Series 60 platform for mobile phones..

BluePlayer is a cross-platform, simple, light sound player. BluePlayer supports the following file formats: WAV, uncompressed AIFF, Ogg Vorbis, FLAC, MP3, MOD, S3M, IT, and XM..

BlueZip is a cross-platform compression utility..

Faith is a cross-platform graphical application toolkit written in C++. It runs natively on Linux/Unix (Xlib), and on Windows (Win32). It is comparable to Qt and Gtk+. Faith has an API oddly similar to Qts.

Elisa Media Center project was designed to create an open source cross platform media center solution.

Sourcery is an interactive cross-platform disassembler that ties together libbfd, libopcodes & GTK..

ColorSnatch project is a cross-platform GUI board game. ColorSnatch is a board game built using the Lazarus libraries. Player 1 starts in the lower left corner, player 2 in the upper right.

DoxMentor4J is a standalone cross platform Web/Ajax based documentation library that is fully searchable and may be hosted in the file system, in an archive or embedded in the Java classpath.

aedGUI is a cross-platform C++ GUI library that works with SDL. The goal of this project is to create a cross-platform C++ Graphics User Interface library to be used with Simple DirectMedia Layer (SDL). It is fast, non-intrusive and easy to use..

qtsourceview is a cross platform syntax highlighter library written in C++/Qt, based on the syntax highliter definitions from the GtkSourceView project: http://gtksourceview.sourceforge.

SmartSplitter is a cross-platform open-source control splitter class for REALbasic 5 or greater. The SmartSplitter control allows the user to resize other controls contained in the window as desired.

StarDict project is a Cross-Platform and international dictionary written in Gtk2. It has powerful features such as "Glob-style pattern matching", "Scan selection word", "Fuzzy query", etc.

libstatgrab is a library that provides cross platform access to statistics about the system on which its run. libstatgrab library written in C and presents a selection of useful interfaces which can be used to access key system statistics.

Keystone is a cross-platform, object oriented application framework which allows applications to be written to build on the target platforms of GNU/Linux and Win32 without modification of their source.