Parkinsons International
- Provides professional services including accountancy, tax, corporate finance, e-security, internal audit, fraud investigation and financial advisory services in Singapore.
- http://www.parkinsons.com.sg

X2 Business Services
- Offers bookkeeping, income tax, corporate secretarial services and other business services.
- http://x2.com.sg/

The Working Professionals
- Offers affordable part-time accounting and bookkeeping services; suitable for companies that cannot afford full-time accounts staff.
- http://web.singnet.com.sg/~seewai/seewai.index.html

AJ Management Services
- Services include accounts computerisation, bookkeeping, income tax returns, internal auditing and management services.
- http://web.singnet.com.sg/~jcfh8/