blists is a Web interface to mailing list archives. It works off indexed mbox files. It includes two programs: bindex and bit. bindex generates or updates the index file (incremental updates are supported). bit is a CGI/SSI program that generates Web pages on the fly. Both programs are written in C and are very fast.
conv2047 is a very simple RFC 2047 Unicode email header field converter. It reads header lines from standard input and tries to decode or encode them. Operation modes: -d decode (MIME-Header --> UTF-8) and -e encode (UTF-8 --> MIME-Header). The -c option can concatenate multiple output lines into 1.
CCTree is a Vim 7 plugin that displays hierarchical call-trees for functions or files using a cscope database. The functionality is similar to that offered by other IDEs and source-analysis applications, like Kscope, Source Navigator, and Eclipse. CCTree features a symbol dependency tree analyzer for C using a cscope database. It has basic support for functions and macros, and extended support for global variables, macros, enums, and typedefs.