The document summarizes and compares several online presentation tools: SlideShare allows users to import and share presentations but does not offer online editing. It also has a SlideCast feature to create podcasts under 50MB. Zoho Show and Google Docs allow users to import, edit, and share presentations online as well as conduct live webcasts. Thinkfree offers similar editing and sharing features to PowerPoint. MixerCast focuses on combining various media types into shareable presentations. The document provides details on features, file limits, and purposes of each tool.