Grammarly is a extremely useful browser extension but it not being free and open source makes me want something better. Alternativeto.net had a few recommendations but nothing that seemed great. Any recommendations or git hub projects I can help with?
I use LanguageTool, their privacy policy seems okay.
They have paid and free option, and it can be self-hosted, but as fare as understand the self-hosted options doesn’t have any of the software enhancements you get on their servers.