Facebook Creative Hub - A new way to create & preview mockups for ads with Facebook
Typorama - Typorama: Text on Photo Editor is a Typography Art and Poster Maker application created and published by Apperto Ltd.
Enhance - Find, crop, edit, & share pics to social. Made by Hootsuite.
Polona Typo - Type, share and print your own sentences using thousands of letters from the books, posters and maps created over more than six centuries.
Font Candy - Font Candy lets you mask your photos with captions or simply overlay your images with text.
APITemplate.io - APITemplate.io allows you to auto-generate social images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML required.