Free rank checking tool

If your website is targeted in various countries, you need to know the ranks of various keywords. There are many tools that can ease this work. I've been working with few such tools and will share here.
I would appreciate if reader's could add more tools to this list.

1. Rank checker by SEO Book : This was the tools that I used. It can check ranks for Google.com domain for free version and more international domain for paid version. You can check ranks of single to multiple keywords. Whole process is defined in the videos. This is an add-on (i use it on firefox) and it is quite good with the accuracy of ranks. 
2. Rank tracker: This is a power-pack tool which can not only be use for checking ranks but also for checking back-links of website. The free version is accurate but if you are using it with country specific IP then accuracy increases more. Free version wouldn't allow to save reports-not a problem, take the snapshots. The paid version is amazing and works perfect. One more thing that you may require is captcha filling tool, or better is to fill captcha on your own.
3. Hows this look in: I encountered this tool recently and found it good for manual checking of keywords. This is limited to 8 countries (US, UK, Russia, Netherlands and others). The team is working to add more TLDs. You have to register before using this tool.
   The fields that you need to fill are URL-fill in google.com or .co.uk as per your convenience, Location- The TLD set in URL and Browser form the drop down menu. After these fields are filled you'll be provided with virtual Google of that area to check the ranks manually. 
4. Google adword preview tool  This is a very good tool with one limitation, that you have to check ranks manually. Set domain, language, location and device and check the ranks.

Points to note

• Tools #1 and #2 are good for checking ranks of too many keywords.
• Tool #3 and #4 are good for checking ranks manually.
• Tool #1 and #2 may give wrong ranks if using free. 
• Tool #3 and #4 are accurate with ranks but are tedious tools if the number of keywords are high.