The individual contributions are listed in the ChangeLog files inside the source tree.
SOPE was started in 1996 as a basis for building Internet and Intranet applications at the MDlink online service center. At the time we liked the ideas behind the NeXT WebObjects frameworks and decided to build something which provides similiar capabilities on the Linux platform.
SOPE was then used as the basis for the Skyrix Web Groupware Server,
which is now known as OpenGroupware.org.
When Skyrix released their groupware server as free software in 2003,
the SOPE frameworks got released in the same run, also under the terms
of the Lesser GNU Public License (LGPL).
Since about 2002 we started to add new concepts to SOPE, primarily based on ideas from the Zope application server. Hence the new name.