The only alternative is what is often called "internal devaluation". This basically means reducing the actual (domestic) prices of goods in a country.
This is what is often called as increased "competitiveness". It is most often achieved through cutting wages or slowing down wage growth. This is because wages are most often a huge cost factor and the price of capital (which is often bought internationally) is harder to reduce just like that. However there is also the phenomenon known as "downward nominal rigidity", which means people don't accept lower nominal wages, so it's very difficult to lower wages. Much harder than increasing them. In fact, in practice, it's easier to increase inflation to reduce real wages than actually reducing the number printed on your check at the end of the month. However in this case, we want deflation (reduction in prices) to boost exports, so the whole matter gets more complicated.
Technically a devaluation only makes all your domestic goods cheaper abroad. This can also be achieved by just reducing your prices of course. However, as we saw, this is difficult. Also there is a coordination problem, as each industry would have to adjust (thousands of prices must adjust) for the same effect as the exchange rate adjusting (one price adjusts).
Milton Friedman used to compare this to daylight savings. We could all just agree to push all our appointments and activities by an hour for some time, which is hard (this would be internal devaluation). Or just change the time for the same effect (exchange rate devaluation).
A surge in quality is technically also an alternative, but not possible always and especially not short-term.