The granddaddy of HTML tools, with support for modern standards
...The HTML Tidy library, libtidy, is used and incorporated into many applications and projects. It offers an extensive API to read in and parse HTML from a file or buffer into a DOM-like node tree, has cleaning and diagnostic services, etc.
A open source HTTP-Client to send messages to a SAP XI or PI system. Features: Read results of syncronous connections, login with special SAP users, send your own payload...