indd to html conversion is pretty much just export of InDesign documents (.indd) to HTML format, something that can be certainly done with the default save or export function found in InDesign. Considering the proprietary nature of InDesign formats, it is unlikely that some 3rd party software would be otherwise capable to help you convert indd to html, certainly not the latest version anyway.
Open INDD file Open HTML file
Professional desktop document publishing software from Adobe
Mac version od Adobe's popular document designing and publishing software
A design software used to create rich documents for web or print
Software fro document design and publishing