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ものすごく古い漢字コード変換プログラムであるnkfを、 メンテナンスするプロジェクトです。

zlib is designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix compress(1), the compression method currently used in zlib essentially never expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is also independent of the input data and can be reduced, if necessary, at some cost in compression.

pngcrush is an excellent batch-mode compression utility for PNG images. Depending on the application that created the original PNGs, it can improve the file size anywhere from a few percent to 40% or more (completely losslessly). The utility also allows specified PNG chunks (e.g. text comments) to be inserted or deleted, and it can fix incorrect gamma info written by Photoshop 5.0 as well as the erroneous iCCP chunk written by Photoshop 5.5.

A free Japanese text editor for Windows.

Xming は、Microsoft Windows XP/Vista/7/8 (+ Server 2003/2008/2012) のための、すぐれたX Window サーバです。完全な機能を有し、小型で高速、簡単にインストールでき、Microsoft Windows上で単独で動作するとともに、(マシン毎にインストールすることなく)どこででも使えます。

di is a disk information utility that displays everything that df does and more. It features the ability to display your disk usage in whatever format you prefer. It also checks the user and group quotas, so that the user sees the space available for their use, not the system wide disk space. It is designed to be highly portable across many platforms and is great for heterogenous networks.

HDF (Hierarchical Data Format) is a general purpose library and file format for storing scientific data. It arranges data into datasets (multidimensional arrays) and groups (a structure for organizing objects).

ClanLib is a cross-platform game SDK currently supporting Windows and Linux. It provides easy-to-use interfaces for 2D graphics, input, sound, resources, networking, GUI, OpenGL, and more. The goal is to provide a game SDK that does all the dirty work that all modern games need to implement anyway, thus making the game developer concentrate on the gameplay instead of reinventing the wheel over and over again.

OptiPNG is a PNG optimizer that recompresses the image files to a smaller size without losing any data. It works in a manner similar to pngcrush, but it has a wider automatic search space (leading to possibly a better compression), and it runs faster.

libmng is the reference library for MNG, the animation extension to the popular PNG format. It provides powerful animation features combined with PNG's robustness and patent freedom.

The C++ Portable Types Library (PTypes) is a simple alternative to the STL that includes multithreading and networking. It defines dynamic strings, character sets, variants, lists and other basic data types along with threads, synchronization primitives and IP sockets. It is portable across modern Unix and Windows systems and includes a sample HTTP daemon showing the full power of the library.

Squirrel is a light-weight programming language (around 6000 lines of code) that features

syntax.