User Thomas Rabenstein posted the following to the LanguageTool Facebook page and I am not sure what to answer:
I wish I could send out an impulse to direct ypur developers to set LT to the next level and to make it available system wide for Macs, so any writing App could use it and not only the one, you are providing the extension for. This would be a big step forward for all writing tools that still suffer the limited German grammar and spell checker Apple provides. In addition, it would be great if there would be a version available that does not require Java. Are you guys planning anything to make LT rather a system tool than an app-tool?"