Custom Software Developer Home / Software Development / South West, UK / Exeter / EX4 / Existor Limited Existor Limited - Software Development services, South West, UK Existor LimitedExistor - Software Development services, South West. Existor Limited, 32 Bartholomew St W, Exeter EX4 3BN, United Kingdom, EX4 3BN, UKhttps://www.existor.com Custom Software Developer Services offered in South West: Bespoke Software Development, Custom Software Development, Software Design, Application Development, Embedded Software Development, Business Software Solutions