Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
code-prettify - Code Prettify is an embeddable script that makes source-code snippets in HTML prettier.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
highlight.js - Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.