- Corrections Connection
 - Online network for corrections and criminal justice professionals; including associations, prisons, sheriffs, and correctional officers. - Corrections Corporation of America
- Private sector provider of detention and corrections services to federal, state, and local governments.
- American Community Corrections Institute (ACCI)
- Offers cognitive restructuring workbook programmes for domestic abuse, bad checks, sex crimes, theft, murder, and for alternative probations training.
- UNICOR
- Federal government shops for affordable, high-quality goods and services.
- Criminal Justice Institute, Inc.
- National research and consulting firm, specialising in correctional management issues and operations, and professional development of correctional administrators. Established in 1977.
- Federal Prison Consultants
- Assists individuals who have or who are being investigated, indicted, or arrested for a federal or state crime.
- Cornell Corrections
- Private provider of corrections, treatment, and educational services to government agencies.
- Prison Blues
- Jeans, T-shirts, jackets, hats, and more manufactured by inmates at the Eastern Oregon Correctional Institution.
- Correctional Services Corporation
- Developer and manager of privatized correctional and detention facilities in the United States.
- Corrections Consultants, L.L.C.
- Small group of senior-executive level corrections professionals, providing consultations to attorneys and corrections departments.
- Iowa Prison Industries
- Provides inmate produced products including housewares, furniture, clothing, and signs.
- National Corrections Corporation (NCC)
- A prison development firm orchestrating the design, construction, and financing of correctional and detention facilities.
- Avalon Correctional Services, Inc.
- Provides inmates with housing, treatment programmes, and employment opportunities to help pay the cost of incarceration.
- Correctional Management, Inc.
- Providings services and software to government and private industry.
- Metroplex Control Systems, Inc
- Systems integrator specialising in the corrections/detention marketplace with services from design build to turn-key.
- Trinity Corrections Interantional
- Providing metalcraft and packaging employment for inmates in Colorado.
- Public Communications Services
- Provides inmate pay telephone management services.
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