Here we have officially published over 40 free shed plans for your garden and storage, that are suitable for experienced diy'er.whether you are looking for a big or small, modern or classy looking shed - we have all of them available for you and that too for free!. Below we set out 5 shed design software options that offer shed-specific options. some offer free access and features; others are paid software (i.e. you need to pay for them). fyi, if this is your first introduction to the concept of design software for the home , there are options for pretty much every aspect of a home and garden..