There are many extensions are there on Chrome web store but only some extensions are attracted by most of the people.Here I listed Top 10 most popular Chrome extension which are provided by Google.
1. Google Mail Checker Users: 4,034,579
This extension gets #1 position in this list, it displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
2. Google Translate 2,221,401 users
This extension translates entire webpages into a language of your choice with one click. It enables translate button to your chrome toolbar, just click on the icon whenever you want to translate the page.
3. Screen Capture Users: 1,782,813
This extension allows you to capture visible content of a tab, a region of a web page, or the whole page as a PNG image. You can also edit your captured image before saving it as a PNG image. Highlighting, redacting and adding text are supported.
4. Google Chrome to Phone Users: 1,667,256
Google Chrome to Phone Extension enables you to send links and other information from Chrome to your Android device.
5. Google Dictionary Users: 1,514,482
With this extension users can know the meaning of highlighted texts on any webpage. Select text on any webpage, then click the Google Dictionary button to view the definition of your selection.
6. RSS Subscription Users: 869,798
This extension auto-detects RSS feeds on the page you are reading and upon finding one will display an RSS icon in the Omnibox, allowing you to click on it to preview the feed content and subscribe.
7. Google Voice Users: 862,902
This extension allows users to Make calls, send SMS, preview Inbox and audio alert for new messages. Currently this feature only available for US peoples.
8. Search by Image Users: 828,920
This extension allows you to initiate a Google search using any image on the web. Just right click a image on webpages then select "Search Google with this image", similar images will show in Google search.
9. Google Translate for Google+ Users: 727,746
This extension enables Translate feature on Google+ posts. If you find any Google+ posts in foreign language simply click on the Translate button, it translates the specific posts to your native language.
10. Hangouts Users: 699,445
Google+ Hangouts brings one-on-one and group conversations to life with photos, email, and video calls for free. Connect with friends across computers, Android and Apple devices.