What are some quality third-party software solutions for managing localization in a .NET Windows Forms app? Currently the only one I know of is Lingobit but I don't have any idea of if it's any good and if there are better alternatives.
Here are three great ones:
Zeta is the most polished and allows for active translations of resource strings. I am developing ResourceStudio that will be an all singing and dancing localisation tool that will eventually cover all platforms - this won;t be ready for a while yet though (spare time job).
I hope this helps.
Note. the ones I have linked are FREE. there is no doubt that Lingobit is a more substantive product. If you don't like the 600+ USD price tag then the above might help you...