MazeCore services may not be the best, but at least keyword monitoring specialist services are free:). To colleagues who want to monitor keyword positions on the three well-known search engines like google, yahoo and bing. This application seems to be an attractive option. How to use this application is not difficult, we need only register, then enter your blog URL and the keywords you want on the monitor.
In addition to functioning as a monitoring keywords, these services also have a message alert as the report (report) which will be sent directly to the mail address, we just choose option 3 to report results, could be daily, weekly and monthly. Good luck.