A while ago we announced a team up with the developer of the free army creation tool WarFoundry. Although it's still in an early development stage it reached a first small milestone.
There is an initial stable version that supports the minimum needed to create an army. It doesn't validate armies yet, but any armies create under v0.1 should be able to be re-used and validated in later releases. Please take a look and drop some feedback here or on the offical website.