re2c is a tool for writing fast and flexible lexers. Unlike other such tools, it concentrates solely on generating efficient code for matching regular expressions. This make it suitable for a wide variety of applications. The generated scanners approach hand-crafted ones in terms of size and speed.
Cobra is a general purpose programming language with a clean, high-level syntax. It provides language level features for quality, including first class unit tests and Eiffel-style contracts. It supports both static and dynamic binding. Cobra is a compiled language with good run-time performance, but also provides some scripting conveniences such as a pound-bang line (#!) and one step compile-and-run. Cobra runs on Linux, Mac, Windows, and anywhere else that Novell Mono or MS .NET exist, including handhelds.
SQL Construction Kit aims to provide a simple builder/factory pattern based approach to generating DML SQL for all popular RDBMS systems. Included builders are SelectBuilder, InsertBuilder, UpdateBuilder, and DeleteBuilder. It is much lighter weight than any of the ORM tools available, and is 100% Java. It is a complete re-factoring of code that has been in production use since 2001 (updated to use features of Java 6). Also included is a Facade patterned Database object that wraps a Datasource object. This provides an execution framework for the results of the Builder objects, which includes simplified transaction and batch management as well as the ability to transparently handle SQL exceptions in a default manner. The Database object also provides a simple object-oriented approach via wrappers around the database metadata.
Cheetah is a Python-powered template engine and code generator. It can be used as a standalone utility or it can be combined with other tools. Web developers are its principle user group, but it has many potential uses and is also being used to generate C++ game code, Java, SQL, form emails, and even Python code.
The XCB library provides an interface to the X Window System protocol, designed to replace the Xlib interface. It has several advantages over Xlib, including size (small library and lower memory footprint), latency hiding (batch several requests and wait for the replies later), direct protocol access (one-to-one mapping between interface and protocol), thread support (access XCB from multiple threads, with no explicit locking), and easy creation of new extensions (automatically generates its interface from machine-parsable XML protocol descriptions). Xlib can also use XCB as a transport layer, allowing software to make requests and receive responses with both, which eases porting to XCB. However, client programs, libraries, and toolkits will gain the most benefit from a native XCB port.
Caffeine is a free high-performance interoperability solution between the Java platform and the .NET framework, with special emphasis on the enterprise variants of such platforms. It makes software originally written for .NET available to the Java platform. It promotes library reuse between Java and .NET by transferring APIs across environments, and allows code written for one platform to run on the other platform with minimal performance degradation. It is powered by Mono, and runs on Alpha, Linux, Windows, Mac OS X, HPPA, SPARC, and s390 systems.