Libvc is a vCard library which was written using 'flex' and 'bison'. It handles scanning a vCard file, parsing the vCard file into a data storage structure, manipulating the data storage structure, and writing the structure back to a file. It was originally written for 'rolo', but has been split off for general use.
CVS History is a Web application for searching the history of CVS actions. It parses the output of the CVS history command and imports it into a MySQL database for ease of manipulation by the PHP front-end. Its advantage over other CVS history viewing applications is that it only needs anonymous CVS access to the repository.