Work on the MAFF format as a standard for multi-file archives is underway.
Home page: http://maf.mozdev.org/maff-specification.html (This is the best overview IMO).
Mailing list: https://www.mozdev.org/mailman/listinfo/maf
MAFF files are standard ZIP files containing one or more web pages,
images, or other downloadable content, with optional metadata. This
open format was first adopted as a real-world solution to save web
pages by the Mozilla Archive Format extension for the Firefox web
browser, providing an efficient alternative to the MHTML format.
Today, the availability of a technical specification for the MAFF format
is a great opportunity for extending MAFF support to other browsers and
applications as well.
This is related to digital music packaging formats like Apple’s LP format, the rumored CMX format, and ePub. Related posts on this blog:
content packaging tech explosion