Full membership.

Fee: USD $10,000 per annum.

Full members can participate in and vote on everything, and receive all membership benefits.

Associate membership.

Fee: USD $1,000 per annum.

Associate members can participate in and vote on all technical matters, and receive all membership benefits. They can not buy the System Development Kit at the membership reduced price, nor vote on financial or strategic issues, nor run for board or officer positions. Also, they must pay attendance fees to participate in face-to-face meetings.

Observer membership.

Observer memberships will no longer be supported. Those wishing to observe the technical progress of OCA may watch the SDO's public process.