I'm part of a community that work in financial mathematics, and every now and then there are ideas to start library development on narrow sub-fields. A thing missing is a centralized place -exactly like boost- where people can submit and acquire high quality *narrow* C++ source code libraries. There are a lot of fragmented initiatives in mathematical finance: there is overlap between projects, quality may vary a lot, etc. The landscape resembles a bit the pre uBlas era for matrices. It there a place just like boost (good quality C++ source code libs with a large community) for narrow libraries? If not, wouldn't it be possible to create a subsection at boost for narrow libraries? Something like the Matlab toolboxes for C++ source libraries?