OPIS hsa served a variety of clients, including:

International Facility Management Association

Institute of Real Estate Management: Dallas Chapter

Tree Care Industry Association

Ohio CPAs

National Association of the Gifted and Talented

Texas Association of Gifted and Talented

American Society of Plastic Surgeons

American Association of Dental Plans

Independent Insurance Agents of Texas

AMVETS

American Retailers Association

ASAE and The Center for Association Leadership

American Water Resources Association

American Society for Parenteral and Enteral Nutrition

Association for Career and Technical Education

Children Affected by AIDS Foundation (CAAF)

The Electronic Transactions Association

The National Court Reporters Association

American Society for Breast Disease

Texas Society of Association Executives