Operational Accounting Systems Limited (​o-a-sys) supplies and supports business software to a diverse range of industries both on premise and in the cloud.

Our Software Solutions

Exact Software

Pegasus Software

Construction Software

Operational Accounting Systems Limited

Helping you build your software

o-a-sys specialise in helping small and medium sized businesses bring their processes and people together to improve efficiency. With a collective 82 years’ experience and an award winning software portfolio we are able to deliver software solutions to a diverse range of industries.

o-a-sys are leading software partners, with our dedication and hard work being recognised by software vendors who have awarded the team with Centre of Excellence accreditations. This status is only awarded to a selection of software partners and is reviewed on an annual basis to ensure high standards are maintained. 

We are also accredited developers, allowing our in-house development team to tailor the software to your more detailed requirements.

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Upcoming Events

Roundtable Session

Managing Employee absences, Roundtable Session at the o-a-sys office, Tuesday 3rd July 2018

CIS Breakfast Seminar

Construction Software Seminar at The Spitfire Ground, Canterbury, Kent, Wednesday 11th July 2018

Payroll Seminar

Payroll Seminar, Cineworld, Ashford, Kent, Wednesday 12th September 2018. More details coming soon

More Events