here is the 25 free widgets for your blog
1. linkwithin - it help you to display related post with thumbnails
URL : linkwithin.com
2. Disqus - with Disqus your blog visitors easily post a comment to your blog posts.
URL : disqus.com
3. AddToAny - it help you to add sharing buttons like facebook , twitter , LinkedIn , google + , pinterest to your blog
URL : addtoany.com
4. Facebook Like Box - Insert facebook page like box to your blog
URL : https://developers.facebook.com/docs/plugins/like-box-for-pages
5. Twitter Timeline - add your twitter timeline to your blog
URL : https://dev.twitter.com/docs/embedded-timelines
6. LinkedIn Plugins - add linkdin Plugins like LinkedIn share button , follow button, members profile and more to your own blog.
URL : https://developer.linkedin.com/plugins
7. Addthis - it is a best social sharing button widget for your blog
URL : addthis.com
8. scroll to top - Insert back to top button to your blog .
with this widget your blog visitors simply scroll back to top.
URL : scrolltotop.com
9. livefyre - it is a best widget for your blog to add a comment option on your blog.
URL : http://www.livefyre.com/install/
10. google translate - it will help your blog visitors to translate and read your blog in various languages
URL : http://goo.gl/ILpcrj
11. my live Chat Widget - it is a best and absolutely free live chat option for your blog. chat with your blog visitors at free of cost.
URL : mylivechat.com
12. Google Feed Burner - it is a best web feed managment widget for your website
URL : http://goo.gl/91VLdc
13. Google + Badge - with this widget add google plus badge to your blog and link with your google+ page.
URL : https://developers.google.com/+/web/badge/
14. clock link - add a clock to your blog with this clcok widget for your blog.
URL : clocklink.com
15. Skype Button - add this skype button to your blog and enjoy voice calls and instent massage from people
URL : http://goo.gl/Pd4Ncw
16. pollsnack - create a poll for your blog
URL : pollsnack.com
17. Google Map - embed google maps to your blog with this widget.
URL : http://goo.gl/YfTxzA
18. Feed Jit - create live traffic feed for your blog
URL : feedjit.com
19. flag counter - it is also a good widget for your blog
URL : http://s01.flagcounter.com/index.html
20. .foxy form - create contact form for your blog
URL : .foxyform.com
21. copyscape - get copy scapes - content is protected banner for your blog
URL : copyscape.com
22. photosnack - create image slideshow for your blog
URL : photosnack.com
23. White calender - add a calender to your blog with this widget
URL : http://100widgets.com/calendars/91-white-calendar.html
24. time.is - widgets - add your own city or country time to your blog
URL : http://time.is/widgets
25. Addinto - get social sharing buttons for blog
URL : addinto.com