Scribo is a low/no-code web app builder that tries to be simple for non-technical people, but powerful enough to support developers in creating amazing interactions.
With a drag n' drop interface, Scribo provides a dozen of powerful components that will help you create dynamic web apps that can fetch data from any external API, making it a simple tool for creating e-commerce, blogs, and landing pages.
Devhints - TL;DR for developer documentation
HelpNDoc - What is HelpNDoc ? Easy to use yet powerful help authoring environment which can generate various documentation formats from a single source.
Documentation Agency - We write your product or library documentation.
HelpSmith - HelpSmith is a help authoring tool to create CHM HTML help files, manuals, and PDF documents.
Docusaurus - Easy to maintain open source documentation websites
Adobe RoboHelp - Adobe RoboHelp empowers organizations to deliver engaging help and policy content across mobile devices, formats, and platforms.