Free cross software for linux

CDK4AVR stands for Cross Development Kit for Atmels AVR RISC processor serie and should support your development with a comprehensive Assembler and C development environment for even this processor familie under Linux. It will present only free of fee tools, so you can use it without risks. Further you will find some useful OS projects and related sample code all arround AVRs inside of the example packages.
CDK4AVR collects all programms and development tools in one directory (/opt/cdk4avr) and will try to present an easy to admin installation.
My intention for CDK4AVR is / was to provide a full featurd tool chain distribution of all the free accessible resources, because the most stuff is scattered to the wide of the whole Internet and only compileable by wizards or professions.
Installation:
Each package will be provided as RPM only. It is not necessary to install all packages,but you have to install the base package cdk-avr-base every time you want to use another package. Here is an example for a typical GNU development environment:
[user@host]$ rpm -hiv cdk-avr-base-0.3-20031111.i386.rpm
[user@host]$ rpm -hiv cdk-avr-binutils-2.14-20030906.i386.rpm
[user@host]$ rpm -hiv cdk-avr-gcc-3.3.2-20031021.i386.rpm
[user@host]$ rpm -hiv cdk-avr-gcc-c++-3.3.2-20031021.i386.rpm
[user@host]$ rpm -hiv cdk-avr-gcc-colorgcc-3.3.2-20031021.i386.rpm
[user@host]$ rpm -hiv cdk-avr-libc-1.0.2-20040229.noarch.rpm
[user@host]$ rpm -hiv cdk-avr-gdb-6.0-20031019.i386.rpm
[user@host]$ rpm -hiv cdk-avr-simulavr-0.1.2.20040304cvs-20040304.i386.rpm
[user@host]$ rpm -hiv cdk-avr-avarice-2.2-20040229.i386.rpm
[user@host]$ rpm -hiv cdk-avr-uisp-20040207cvs-20040304.i386.rpm
[user@host]$ rpm -hiv cdk-avr-avrdude-4.3.0-20040229.i386.rpm
Base package -- is needed every time you will use any CDK4AVR package.
NOTE: Users of base packages with version 0.2 and prior have to update to latest version. There was a damaged (t)csh startup script. As a result of an buggy %preun script in previous packages you have to update in two cycles:
[user@host]$ rpm -hUv cdk-nios-base-0.3-20031111.i386.rpm
[user@host]$ rpm -hUv --force cdk-nios-base-0.3-20031111.i386.rpm
Enhancements:
- There are minor feature enhancements in AVR-Ada 0.4.1.
- As a result, the packeges for binutils and gcc/gnat were rebuilt.
- There are new packages for the AVR-Ada run time system and related examples.

Cross Platform Toolkit Library (xtklib) is a C++ based framework for highly object-oriented cross-platform programming.
In particular, the library provides a full abstraction layer between its API and the main services offered by the underlying operating system(Thread, processes,GUI,Filesystem,etc.) plus a set of generic utilities (Strings,Data structures,etc.).
Unlike other famous libraries, xtklib makes full use of all features of C++ like RTTI, Templates, Exceptions thus obtaining a strongly object-oriented design with a Java-like sensation.
The library is composed by two main modules: "Base" and "Widgets". The target operating systems are Windows and Unix(Linux and BSD in primis) with a plan to move also towards other systems.
Main features:
- Use of modern C++ - use of many powerfull features offered by modern C++ like exceptions,RTTI,templates and namespaces allows faster development,improves code readability,and reduces programming errors.
- Strong Object-Oriented design - designed to meet requirements of modern software industry: modularity, low coupling, high cohesion,information hiding. Design patterns and advanced class hierarchies are extensively used in all the library.
- Ease of use - Clean and intuitive programming interface with a Java-like sensation.
- Complete - Features supported includes:
- Basic services: Thread, Synchronization, Filesystem access, Processes, Networking.
- Advanced services: I/O Streams, Logging.
- Debugging tools: Stack tracing, Memory Leak detection.
- Gui widgets (Work in progress): Windows,Frames,Layout managers,common controls,advanced controls.
- Generic utilities: complete data structures framework, String class with unicode support.
- Full unicode support: native support to unicode, conversion to/from different charsets.
- And many others: the list is too much long to enumerate all minor but extremely usefull features.
- Cross Platform - Supports various systems and compilers.
- XTKlib is known to work under:
- Windows XP (x86)
- Visual C++ versions 7.1, 8.0
- MinGW32
- Linux (x86, x86_64)
- GCC 3.4
- Compatibility with other platforms and compilers are not excluded.(If you can compile/use xtklib with a non listed compiler/platform let us know about that, thanks)
- Fast - Although performance are not the main goal of this library (exceptions and RTTI have a tradeoff in this meaning), code agility and execution speed are often taken in consideration during development, thus leaving a performance advantage compared to interpreted programming languages(eg. Java,C#) or scripting languages(eg. Python,Ruby,Perl).
Enhancements:
- This is the first release with a working "Widgets" module, although it has only basic features.
- This release is provided for testing and development only.

Canorus is a free cross-platform music score editor.

Canorus supports an unlimited number and length of staffs, polyphony, a MIDI playback of written notes, chord markings, lyrics, a number of import and export filters to many formats like MIDI, MusicXML, ABC Music, MUP, PMX, MusiXTeX and LilyPond and more!

Canorus is evolving quickly.

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.

DeXSS project provides a SAX2 Parser to help protect against Cross-site scripting (XSS) attacks.

DeXSS uses TagSoup to parse potentially malformed input, followed by a SAX2 filter pipeline to remove JavaScript from HTML.

You can use the DeXSS parser in place of your existing SAX2 parser, or you can use the DeXSS utility to provide a string-to-string conversion.