Free Tools to Capture, Edit, Save and Share Screenshots

1- Site2Pic
This is one of my favourite screen capturing tools. It is very easy to use and does not require any installation or  download. Just head over to its main page and enter in the URL of the webpage you want to capture and  Site2pic will instantly provide you with a screenshot of that website. You can share the screenshot using the  unique image  URL Site2Pic generates for you.

2- Puush
Puush is a free tool that lets you share screenshots and files. Use keyboard shortcuts provided to quickly capture any portion of your screen or upload any file. It can store up to 200 MB of files for free.

4- Four Screen Sharing Tools
Here is a list of four free screen sharing tools teachers can use to share their screens with their colleagues or students particularly when working on classroom projects or tutorials.

Chrome Screenshot Extensions :

1-  LightShot
This is a great screen capture extension that works on Chrome. Besides being able to take a screenshot of a webpage or part of a web page, LightShot lets you also takes screenshots from videos and share them with others. It is really great.

2-  Explain and Send Screenshots
This extensions lets you capture a webpage, write text, draw arrows, and circles on it and share it with a direct link to the screenshot without a frame.

3- Pixlr Grabber
This extension allows users to edit, save or share screen grabs and images.

4-  Aviary
Aviary allows users to edit any photo on the web without leaving the page using Aviary's super simple photo editor. Just right-click and select " edit image "

5- Webpage Screenshot
This is one of the most popular and installed extension. It is fast and simple way to save screenshots of any webpage and is completely free.

6- Awesome Screenshot
This add-on allows users to capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info and many more.

7- Screen Capture
This tool lets you capture visible content of a tab, a region of a web page, or the whole page as a PNG image. It supports horizontal and vertical scrolling.