1. nitroNITRO (NITFio, "R" is a ligature for "Fi") is a full-fledged, extensible library solution for reading and writing the National Imagery Transmission Format (NITF), a U.S. DoD standard format. It is written in cross-platform C, with bindings available for other languages.
2. coda-ossThe Common Open Development Archive (CODA-OSS) is a set of open source, modular components developed by Maxar Technologies, Inc., primarily as a portable runtime for C++ processing.