Textus — if you need a solid, open-source Markdown editor that run on macOS, Linux and Windows
I quite enjoy using it, and it does come with an AI writing assistant (grammar check, revision, built-in skills, etc)
Export to PDF, Word, or HTML, runs on your device and can use your AI provider of choice
TextusTextus — the next-generation Markdown editorYou hold the pen. AI keeps your ink flowing. Textus is a free, open-source, next-generation Markdown editor for macOS, Windows and Linux, with a writing assistant built in.