N2O is Erlang and Elixir compatible set of libraries that covers full ERP application stack: NS and MQ buses, storage, business processes, ui, forms, complex controls elements, document management, etc. As Erlang/OTP stands for language and set of base libraries, you may call our stack Erlang/N2O or Elixir/N2O. KVS is the light version of client interface on top of BTREE database abstractions strive to support the basic features: Polymorphic tuples aka extensible records; Basic schema for chain storage; Backends: MNESIA, FS, ROCKS; Extremely compact and battle-tested: 500 LOC. This is an essence and fruit of KVS; the abstract term interface with naive yet productive stream implementation. Useful for simple blockchains, messaging, storage, processing systems, and banking industry. KVS is used in BPE and BANK applications.