Diff-ext is an extension for filemanagers such as Windows Explorer and Nautilus that allows to launch diff/merge tools on selected files.
Command line tool for counting source code lines
cline is a command line tool that counts code lines in your project folder. It is designed to recursively find any source file matching specific rules and count the line breaks within that file. You may specify file suffixes to include or exclude as well as regular expressions for code lines that shall be excluded (e.g. to exclude comments). By default a heuristic algorithm skips binary files. You may configure the restrictiveness of this algorithm with command line options.