Aptcode Software
   osCommerce site design and contribution installation. Custom coding and general osCommerce support services.
   http://www.aptcode.com

Attitude osCommerce
   osCommerce customization, support and installation services.
   http://www.oscommerce.co.nz/

EPC En-Powering Commerce solutions
   Specialises in customising osCommerce.
   http://www.e-pc.com.au

Gigabyte-hosting
   Offering osCommerce hosting, technical support, and custom coding.
   http://gigabyte-hosting.com/

J. G. Briggs & Company
   Installation and customization services for osCommerce stores. Template and contribution installation on existing osCommerce sites.
   http://www.jgbriggscompany.com

McGinTech Solutions
   Specialize in ecommerce design utilizing osCommerce.
   http://www.mcgintech.com

Osc4biz
   Provides osCommerce related services package: development, customization, add-ons installation, templates creation and implementation, hosting, consulting and custom e-commerce solutions.
   http://osc4biz.com

eShopFitters
   osCommerce development, including: adding new contributions, search engine optimisation and general bespoke OSC software development.
   http://www.eshopfitters.co.uk/

osCommerce India
   osCommerce services from basic setup to customisation and installation of contributions.
   http://www.oscommerceindia.com