Hlo Friends,
What are webmastertools ?

Webmaster tool is a free tool from google. its used for submitting sitemap, finding crawl error, backlink of site, HTML improvement and to set geographical location

Google Webmaster Tool is a free web service by Google for webmasters. It allows webmasters to check indexing, crawl errors and over all activities fo a website.

Google webmaster tool is a search engine tool used to submit your website to increase the visibility in Google searches. The tool also helps to find backlinks, submit sitemap and analyze various data to improve optimization techniques for your website.

Google Search Console is a no-charge web service by Google for webmasters. It allows webmasters to check indexing status and optimize visibility of their websites. As of May 20, 2015, Google rebranded Google Webmaster Tools as Google Search Console.

Webmaster Tools-

1. Google Webmaster
2. Bing/Yahoo Webmaster
3. Yandex Webmaster

1. Google Webmaster Tools. This is my preferable tool.
2. Yandex Webmaster Tools
3. Bing Webmaster Tools
4. Baidu Webmaster Tools

Webmaster tool is a free service that helps to evaluate and maintain the performance of your website in search results. It is the primary mechanism for Google to communicate with webmasters.