Software for business management - open to bidding

Dear Sir/Madam, We are looking for a basic Business Management Software which can be distributed amongst our colleagues for their use at home. We need this Software to be ours and not available in the Market. The basic Requirements for this software is to have a basic accounting software, a Human Resource Software, a Payroll Software and an Inventory Management/Stock Take Software, These requirements can be merged into one software or be created individually. We hope you can create this for us and also we hope this software will be the only one and no other party should have it as we want to keep it as personalised as possible. We appreciate your time. Thank you and do revert back to us if you can assist us for further discussions. I have also listed a few examples of the kind of software we are looking for. Thank you. Examples of Softwares we require that is currently in the market. Accounting: 1. Tas Basics 2. NCH Express Invoice PayRoll: 1. Basics Payroll 2014 Human Resource: 1. Simple HR Inventory Management: 1. Pos Maid 2. inflow Inventory Regards, Syed Saleh