General :: How To Share Access Database On Company Intranet

I want to consider ways of sharing an Access database within our company. This could be web-based via our intranet or done some other way.

I understand that Microsoft's preferred way of sharing via an Intranet is to use SharePoint. However, as we don't use SharePoint (we use Atlassian Confluence) the cost of that route would be prohibitive.

Any methods of sharing an Access database across, say, 20 people? Simultaneous read/write access would be required but in reality the usage will be low, so performance is not really an issue. I would like to consider web-based or other methods.

I have chosen Access 2013 simply because we use Office Professional 2013 and Access will be familiar to some developers. We could use a different product. But I would certainly prefer a tool that supports RAD design of forms.