Not directly, no.
There are too many technologies for a small company like ours to keep track of and export to, so we don’t plan on adding export capabilities natively any time soon.
Our strategy instead is to use an open, well-documented file format and work with partners to provide such features. There are already a number of projects under way which extend Mockups this way, see for yourself in the extensions page.
If you’d like to write an extension for Mockups, do get in touch, we’d love to help you as much as we can.