BoltWire is described as 'easy to use web development system with surprising flexibility and power. Our innovative architecture plus best-in-class forms processing makes it easy to create complex, interactive, web applications fast. Best of all, it's FREE' and is an app in the Development category. There are five alternatives to BoltWire for a variety of platforms, including Self-Hosted solutions, Cloudron, Online / Web-based, Wordpress and SaaS. The best alternative is MediaWiki, which is both free and Open Source. Other great apps like BoltWire are DokuWiki (Free, Open Source), Confluence (Paid), Helpie Knowledge Base Wiki Plugin (Paid) and Bookplay (Paid).
MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis, including this website, the home of MediaWiki.