lddot is a wrapper over ldd, which produces output in Graphviz format.
License: The Expat license
$ ./lddot $(which bash) | graph-easy
+----------------------------------------------------+
| |
| |
+-----------------+----------------------------+ |
| | v v
+-----------+ +----------------------+ +-----------------+ +----------------+ +---------------+
| /bin/bash | --> | /lib/libncurses.so.5 | --> | /lib/libdl.so.2 | --> | /lib/libc.so.6 | --> | ld-linux.so.2 |
+-----------+ +----------------------+ +-----------------+ +----------------+ +---------------+
| | ^ ^
+----------------------------------------------+-----------------------+ |
| |
| |
+----------------------------------------------+