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DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
GeoPeeker - GeoPeeker is a tool for viewing sites from different geographic solutions.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
browserling - Live interactive cross-browser testing from your browser.
Tiki Wiki CMS Groupware - Tiki Wiki CMS Groupware, also known as Tiki (or TikiWiki), is a full-featured, web-based, multilingual, all-in-one Free/Libre Open Source Software solution. Tiki can be used to create all kinds of web apps, portals, knowledge bases, intranets, etc.
BrowserStack - BrowserStack is a software testing platform for developers to comprehensively test websites and mobile applications for quality.