Difference between Beta and Developer Channel Chrome
The difference between beta and developer channel chrome is just the updated period. Developer Channel of Google Chrome is updated weekly where as beta chrome is done monthly.

Google Chrome peaked when it was released with market share of 3.1%. Since then its dropped down to 1.5% and even sometime to 1.4%.
Google launched its browser in to market in September after so much talk and long wait. According to Global Marketshare Statistics Google Chrome reached its peak on September 3 with market share [...]