Copytesting - Improve your website copy based on data from your audience
Headlime - Create headlines like copywriting experts
avocode - Centralize design collaboration, version control, prototyping, feedback, and developer hand-off with Avocode. Work on any design, anywhere, with anyone. Sign up free 👉 https://avocode.com/.
GETitOUT - Build a strong marketing foundation to attract your ideal clients: Easily create buyer personas, turn features into benefits, and generate websites and emails - complete with texts and layout, in your design.
HTMLEmail.io - Responsive HTML email templates for startups & developers
Good Email Copy - Email copy from great companies.