MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
DocParser - Extract data from PDF files & automate your workflow with our reliable document parsing software. Convert PDF files to Excel, JSON or update apps with webhooks.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
EnactJS - An app development framework built atop React that’s easy to use, performant and customizable.