This is a minor but ongoing annoyance that takes up more time than I would like, and I am wondering if anybody knows of a solution. I often write papers with foreign collaborators, and we tend to end up with a mixture of British and American spellings of words in our text. We know it's a problem, and often agree on which to use ahead of time, but it's so ingrained one often doesn't even realize when you've made a mistake. Thus, in the final proofing stage, somebody has to go through and manually regularize the spelling, which is really boring and time-consuming.

My question is this: does anybody know of software that can help automate this process? It feels to me like it should exist, but I don't know of any...