- Insomnia - A modern, open source API client for making requests to APIs while doing development
- Postman - A tried-and-true API client for making requests to APIs while doing development
- Postman Learning Resources - A great training center to understand how to use postman, essential for back-end work
- Postwoman - A PWA stand-in for postman
- JSON Schema - Home of the JSON working draft
- JSON-LD (Linking Data) - A super-set of JSON that integrates connected data
- Open Graph protocol - Adds additional metadata which enables any web page to become a rich object in a social graph