Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
highlight.js - Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Asklayer - Get real answers from your customers with Asklayers surveys, quizzes, polls and more. Works on any website with zero code and includes enterprise level features such auto-segmentation, user tagging, branching, NPS & CSAT calculation.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.