Last week we listed and categorized some of the leading topic-tracking tools on the Web. As usual we got a great response in the comments, with additional information about the apps listed and suggestions for other apps to add. So in this post we present an updated list of topic tracking tools for you to explore. Once again, we invite you to add more in the comments and/or comment on the existing ones.
We've also added links, to make it easier for you to check these services out.
These are services that output RSS and/or other formats, such as email notification. We think this type of topic feed tool is the most flexible, particularly when it outputs RSS. With RSS feed output, you can do further filtering or grouping of the feeds inside an RSS reader like Google Reader or Netvibes.
These services don't output RSS or emails for topic searches. That's not necessarily a bad thing, it just means you have to visit the destination site to see results every day.
These services show what is popular or new amongst their respective communities. There are many other such services, so the following is just a sample:
Similar to social filter services, only these have a specific community driving the output of stories. Again, the below is a small sample:
Topic-focused blogs (such as ReadWriteWeb!) are great for tracking topics on the Web. In recent times, light blogging services have offered an easy way for individuals or small groups of people to curate information on a given topic.
See also: interesting post by Tony Karrer about "topic hubs" for bloggers.
These services aggregate, or group, news and other stories around a specific topic.
These are professional brand management services that you typically have to pay for. Many of them include topic tracking. Here's a sample...
Please add your further suggestions to our categorized lists in the comments.
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Last week we listed and categorized some of the