XMCC is free small file packer/archive. Support compression, encryption, and case-sensitive or case-insenstitive filename access for cross-platform support. Mainly designed for compacting resource for games in freeBASIC.

Note: if you working with resource directly from pointer/memory buffer, you can use almost entire library in this page since most library can working with loaded data from pointer (e.g. like Armory-BMP library can load/create image buffer directly from pointer).