What are some alternatives?
When comparing Flamelink.io and Restful CMS, you can also consider the following products
Contentful - You don't need another CMS. You need a better way to manage content — unified, structured, and ready to deploy to any digital channel.
Prismic - prismic.io is a web software you can use to manage content in any kind of website or app. API-driven.
PushTable - Headless CMS for Google Firestore and Firebase
Comfortable - Content API for Websites & Apps
Strapi - Strapi is the most advanced Node.
GraphCMS - The GraphQL Headless CMS