Pears Database Software
The Pears Open Source Software project offered software that implemented a Pears database layer.
Pears databases had features that made them ideal for storing hierarchically structured data, such as bibliographic records, authority records and text documents.
The software included a stand-alone program to build a Pears database.
Documentation
License
From original distribution to 2006 - this software was released without charge in accord with the terms of the OCLC Research Public License.
From 2006 until it's discontinuation, the software was issued under the Apache License, Version 2.0.
Distribution
The pears source code is on longer available.