SlideWiki is described as 'platform created as a proof of concept for CrowdLearn concept. SlideWiki empowers extremly large communities of instructors, teachers, lecturers, academics to create, share and re-use sophisticated educational content in a truly collaborative way' and is an website in the Education & Reference category. There are four alternatives to SlideWiki, not only websites but also apps for Tumblr and Wordpress. The best alternative is LinkedIn SlideShare, which is free. Other great sites and apps similar to SlideWiki are SlideOnline (Free), DocDroid (Freemium) and DocSlide (Free).
SlideShare is the best way to share presentations, documents and professional videos. SlideShare is the world's largest community for sharing presentations. SlideShare is a business media site for sharing presentations, documents and pdfs.
SlideOnline lets upload and share PowerPoint and PDF presentations online making easier to embed the presentations in websites, blogs and social networks. Currently it supports Adobe PDF and PowerPoint (.ppt, pptx) presentation format.
Share documents and knowledge that you care with colleagues, customers, friends and those you are interested. You can easily embed documents, slide on the website or share on social networking sites such as Facebook, Twitter, LinkdIn.