A special thanks goes to Vicente J. Botet Escriba that helped a lot on all areas of this lib.

Thanks to (chronological order):

Antony Polukhin for improvements on plug-in system module (shared_library), that now is a new library, see notes above.
Rodrigo Madera for your comments, help and RM support.
Sergei Nikulov for provided fixes and patches.
Benjamin Dieckmann for your comments and help on posix side and the singleton implementation inside lib.
Stanislav Ivochkin for your comments and self-pipe aspect design.
Julian Gonggrijp for your comments to improving the ease of use.
Jarrad Waterloo for your comments and directions.

The first Boost.Application appears in 2011 labed as 'version alpha 1 (0.1)' and some people have helped on various areas that influenced Boost.Application.