Ranked in these QuestionsQuestion Ranking
Pro Very slim
IncludeOS is a very lightweight piece of software, even for Linux standards. It includes a bootloader, OS components and a complete C++ library and it's just 693K when optimized for use. It's even less than 1MB.
Con Has some complexity added because it's not based on a language with process isolation
Since C and C++ (with which IncludeOS is built) have no language level isolation, IncludeOS doesn't have process isolation either. Because of this, sensitive components have to be split into different nodes, isolated by either different virtual machines or different computers.