Not free, but much cheaper and not subscription are Affinity Photo and Affinity Designer which are both very good and can edit Adobe file types. We've decided to revert to an owned version of CS5 after they tried charging us over £150 per seat for CC this year. Longer term I would like to move away from Adobe if at all possible. A fun fact we recently discovered is that they licence Sixth Form and FE Colleges differently, with the latter being much more expensive.