  O-RAN Software Community (OSC) is an open-source project collaborated by
O-RAN Alliance and Linux Foundation, aiming to develop reference software
components based on 3GPP and O-RAN Alliance specifications. The OSC has twelve
projects. Among them, the Integration and Testing (INT) project is responsible
for testing the requirements documented in each release for end-to-end and use
case testing. Three OSC Community Laboratories were built to speed up the
integration and interoperability testing among different projects. This paper
summarizes the software components developed by OSC projects and the status of
the three OSC Community Laboratories. The activities of each laboratory, how
the community collaborates, and the challenges we encountered along the way
were elaborated.
