Copysmith - GPT-3 powered content marketing that feels like magic
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Grammatica - AI powered writing assistant
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
Headlime - Create headlines like copywriting experts
LyX - LyX is a document processor.