SlideShare alternatives

SlideShare is an online slide hosting service. Users can upload files in the following file formats: PowerPoint, PDF, Keynote or OpenOffice presentations. Slide decks can then be viewed on the site itself and embedded on other sites.
SlideShare alternatives are:
Scribd, Google Presentations, SlideRocket, Prezi, Docstoc
Here are the latest news about SlideShare:

2014 SlideShare gets iOS app

LinkedIn rolled out the first-ever iOS app for SlideShare, the presentation and content-sharing platform. It's offering a modern, clean layout to browse and search through the presentations hosted on SlideShare’s service. It also adds more social experience, allowing you to like and share the presentations you come across, and follow the categories you care about. Users have their own profiles on the app, where you’re able to see all the presentations you’ve liked, uploaded and saved. And you can view presentations from your friends and professional network, tying LinkedIn’s social graph into SlideShare more directly, so you can see what’s popular within your own group.

2014 SlideShare makes Pro features Free

LinkedIn-owned SlideShare, the service for publishing presentations online is going free. It's dropping its PRO accounts and making extra features, which used to come at a price, free for all. The most popular paid feature is analytics. It lets you know who has looked at your presentations (including location), how they found the content, which sites are driving traffic to the presentation, and other engagement metrics — much like the profile viewing analytics on LinkedIn’s main site. Another paid features include the ability customise your profile, to set presentations to private so that only specified users can view them, as well as video uploads. Thus LinkedIn wants to increase the number of active visitors and uploads to the site and to collect more data for itself about how business people are using its cloud-based services.

2012 LinkedIn acquired Youtube for presentations - SlideShare

LinkedIn, the professional social network #1, is doing fine. During two last quarters LinkedIn manages to double its incomes - already up to $188 million/quarter. And the company is already valued at $10 billion. That's why LinkedIn can afford to buy the new users in bulk - for example, by purchasing online service SlideShare for $119 million. SlideShare works like Youtube - only not for video - but for presentations. And its target audience - are mostly business users (like in LinkedIn). You can upload to SlideShare your PowerPoint presentation and publish it anywhere in the embeddable web-viewer (like yuotube video). Besides SlideShare - is itself an additional marketing channel with a large audience, so by publishing a presentation on it, you can get new customers and partners. Will LinkedIn somehow integrate SlideShare into its network - is not clear yet, but at least they have already embedded LinkedIn presentation on the SlideShare homepage.

2011 Online presentations go HTML5: SlideShare and Zoho Show

It seems that the days of Flash as a platform for the Rich web interfaces are really coming to an end. Online presentation services, for which the Rich-interface is most important, are ditching Flash in favour of HTML5. Last year, the market leader, SlideRocket released the HTML5-viewer and today the most popular presentation sharing service SlideShare has done the same. Moreover, SlideShare not just added the HTML5-view option but completely removed the Flash-option. Developers say the new HTML5-viewer is 30% faster and displays presentation on tablets (like iPad) and smartphones. In addition, you can now select and copy text from a presentation with the help of the mouse.

Unlike its rivals, Zoho Show service was originally built on HTML and Ajax. And that's why it reached even more progress in creating presentations on HTML5. Today Zoho has announced the new version Zoho Show 3, which includes impressive editing features for vector and raster graphics and animation support. Moreover, unlike SlideRocket, Zoho Show uses HTML5 not only in the viewer. The presentation editor is also working on HTML5. The new version also allows to collaboratively edit presentations in real time and demonstrate presentations via the Internet in the interactive mode.

2009 ThinkFree takes on Scribd and Docstoc with online docs viewer

ThinkFree Viewer
The online office service ThinkFree has launched a new Flash-based document viewer called Uni Paper. It can be embedded to any web page and displays most common office formats: PDFs, Word, Excel and PowerPoint. The max file size is 5MB. The readers can view and search in a document without the need to download it to desktop. And when you edit this published document in your online ThinkFree account, the changes are reflected in real-time back anywhere the Uni Paper has been embedded or shared. Besides the opportunity of publishing documents on your site, you can add it to ThinkFree public catalog, that can attract additional readers. But ThinkFree's viewer is not so advanced as one in Scribd, Docstoc, Slideshare. For example, it's missing the option to view all the pages of a document at once, and the the directory of publicly shared documents contains very little categorization, or genre-based exploration.