Sharaz Shahid

Code Widget is simple widget allows you to insert any arbitrary Text/HTML and run PHP Code or Short Code. This Widget parses PHP code into simple text and much more.
Only users with the unfiltered_html role will be allowed to insert unfiltered HTML. This includes PHP code, so users without admin or editor permissions will not be able to use this to execute code, even if they have widget editing permissions. 
This plugin is developed and maintained by <a href="https://twitter.com/sharazghouri1" rel="nofollow ugc">Sharaz Shahid</a>

Code Widget

Code widget help  to  add  Short Code, PHP Code, HTML, and Simple Text in widget.

authorstream

Helps you easily embed different presentation formats like PowerPoint files, Apple Keynotes, Adobe PDF files into your WordPress posts by inserting the WordPress embed code of presentations from authorSTREAM.authorSTREAM uses WordPress Short code API.
More info:
<ul>
<li><a href="http://www.authorSTREAM.com/Faq" rel="nofollow ugc">authorSTREAM WordPress plugin</a>.</li>
</ul>

authorSTREAM

Doesnt' work in https

Easily embed presentations(Keynotes, PDF, PPT, PPTX files) into your WordPress posts.

Code Widget vs authorSTREAM