SPI Inc, Software in the Public Interest, is the non-profit organization serving as the organizational steward for many open-source projects from Arch Linux and Debian to recently X.Org. SPI Inc also manages the finances for smaller projects like Drizzle, GNUstep, YafaRay, HeliOS, Fluxbox, and many others. Those that somehow never heard of SPI Inc can learn more about their efforts via SPI-Inc.org.
SPI recently published their 2016 end-of-year financial statements for their various projects they manage, which some of you might be interested in. All together at the start of 2017, SPI had under management $2,486,503.75 USD, as outlined here.
For those wondering about the financial health about various projects, their end-of-year numbers are outlined here. Arch Linux has $30,603 USD, Debian has $207,824, FreeDesktop.org has $17,500, LibreOffice has $68,740 tucked away, X.Org has $33,444, and SPI itself has $170,854 collected from its 5% cut from open-source projects as well as donations and interest.