Online screencast tools
A list of tools to create screencasts (screen capture videos) and screen captures as well as some online web page image capture tools and full screen screenshot apps.
No-install screen cast applications
Video of my screen
These apps seem to all use java applets to enable the capture of local screenshots into a video.
Just take a local screen shot?
http://take-a-screenshot.org/ describes how to do it for MS Windows, Mac OS X, iPhone, KDE and Gnome.
Online screen capture (still image)?
Amongst many others will take an image of a webpage for you, these tools are not taking images of what you actually see, they are taking images of what their server sees.
Image of what I’m seeing online?
http://aviary.com/launch/talon – browser addon
http://www.pixlr.com/grabber/ – browser addon
http://www.screengrab.org/ – browser addon, Firefox only; recommends Java
http://www.screenshotsite.com/ no downloads; requires Java
http://www.owely.com/ – MS Windows only; requires application install; depends on .NET framework
http://www.jingproject.com/ – download for MS Win or Mac OSX; snapshot or screen video
http://www.techsmith.com/screen-capture.asp – “snagit”; MS Win or Mac version
Will take images from your local computer and allow you to edit them online, upload them and send them to your friends or customer support or whoever. These do require installation of either an app or an add-on depending on your browser and OS.