Criteria

Google Alerts 

Addict-o-matic 

Twazzup 

Social Mention  

Netvibes 

Klout 

Followerwonk  

Pricing

Free

Free

Free

Free

Free trial

Free

Free

Type of social media

All

All

Twitter

All

All

All

Twitter

Type of data gathered

Emails you online mentions of keywords—for example, your organization’s name

Provides the users with a dashboard made up of a variety of sources, which can be set to social media sites, with related links on a specific topic of their choice

You can follow a real-time stream of updates including a certain keyword on the left, while the right sidebar shows the top tweets and a list of the top tweeted stories about this topic, as well as related photos from twitpic

Social Mention monitors 100+ social media properties directly including: Twitter, Facebook, FriendFeed, YouTube, Digg, Google etc

Monitors campaign across all social media domains

Tracks how retweets, likes, and shares change your Klout Score. To calculate the Klout score they measure multiple pieces of data from several social networks, and also real world data from places like Bing and Wikipedia. They we apply them to our Klout Score algorithm, and then show the resulting number on your profile. It is useful as an indictaor of your outreach.

Provides detailed information about followers along with their activity. You can even access statistics such as the number of followers that are online or your standard posting schedule etc. It also categorizes your followers based on authority, total tweets, activity, and number of followers.

What is it useful for monitoring

Mentions of your campaign in social media

Mentions of your campaign in social media

Mentions of your campaign on twitter

Mentions of your campaign on twitter

Mentions of your campaign in social media

Klout suggests shareable content that your audience hasn't seen yet.

Profiles twitter followers