LanguageTool

Fourteen accounts commenting on five YouTube videos between 2019 and 2026 describe LanguageTool from three angles. Four accounts on three videos value it for writing in languages other than English, two of them naming Spanish and one Catalan as well; one other commenter objected that the English variant they saw was American English. Seven accounts on three videos describe self-hosting the open-source server. Three of them run their own instance, two in Docker; three describe what it takes to run, one finding Docker too resource-hungry, one reporting high memory use in Docker and one noting that a zip install needs Java; and three describe the self-hosted version as basic or without the AI checks, though they differ on how far it goes, from spelling only, to grammar beyond a browser spellchecker, to grammar that misses complex structural problems. One self-hoster adds that an instance open to the internet has no access control and that browser extensions cannot pass it a login; another notes that the optional n-gram data covers only four or five languages. Three accounts writing in 2025 and 2026 describe it as needing payment for use they expected or remembered as free, and two others call Premium expensive; one of the multilingual commenters finds the free version enough.