RSS has become a very common phenomenon on the web. Everybody uses it, whether they realize it or not. It has taken different forms and works in different ways. RSS delivers content with flexibility and faster than any owl at Hogwarts. (Don’t know what’s RSS? Read this)

A typical webworker goes through hundreds of feeds in a day, maybe more. Many of which are uncategorized and just linger between the pile. Those feeds may be bundled into a single feed. Like all news feeds combined into one and same with design, photography etc. A developer on the other hand might want to do it for a different reason. We have 10 tools today on Techie Buzz that should make your task easier.

1. Yahoo Pipes: Yahoo pipes is one of the most powerful and extendible tool on this list. Within Yahoo pipes, you can source in multiple feeds into a ‘pipe’, add filters to it, sort data as you wish, add conditions and whole lot. Yahoo pipes is so feature rich, that it can sometimes get a little confusing. If so, follow this little tutorial to get right on track.

2. FeedMingle: FeedMingle mingles your feeds into different formats. You’ll need to add your feed urls in the provided box, one in each line. Once done, you can grab the combined feed in formats of either RSS, atom or json. An html widget is also available, which you can paste anywhere on the web.

3. Feedweaver: Feedweaver allows you to create your own personalized RSS feeds. You can create your own feeds by combining source feeds from your favorite websites, and use filters to choose what you want in it. By using filters, you can extract only those stories which you wish to read. Feedweaver requires registration.

4. FeedStitch: FeedStitch lets you pull data from a lot of sources: Regular rss, Twitter, Flickr, Delicious and Tumblr to name a few and put them under groups. Each group then has its own feed which contains stories from all its constituents. FeedStitch also needs registration, which also gets you a public profile listing all your groups.

5. FeedKiller: No FeedKiller doesn’t kill the poor feeds. It mixes them. It’s working is quite simple. Enter a name for the new feed. Enter feed urls of the constituent feeds and mention how many stories you want to be indexed. There’s no limit to the number of feeds and no registration is required.

6. Feed Informer: Feed Informer lets you create digests out of multiple rss feeds. Once a digest has been created, the output can be in different forms which include PDF, Flash, Rss, atom, jpeg, Js and a lot more. Templates can be chose and digests can be published as well. Feed Informer requires registration.

7. Feed Rinse: Feed Rinse is more of a Filter than a mashup tool. Nevertheless, you can combine feeds with it regardless of any applied filters or not. Feed Rinse previously was a premium application, but now all the packages are free. You’ll get features like channels, keyword filtering, author filtering tag filtering and a lot more.

8. xFruits: xFruits is a lot more than a Rss feed aggregator. It’s a whole power house. It contains different modules that do different tasks. There’s one which creates a bunch of RSS feeds and packs them into one. Another creates a web page with a feed. xFruits will also let you create PDF files, OPML files, a mobile friendly version of your blog from a RSS feed. Requires registration.

9. BlogSieve: BlogSieve is a free web-based tool that creates new feeds by filtering, merging and sorting existing feeds. The BlogSieve engine accepts virtually every (valid) feed format, processed results are then exported into any feed format you choose.

10. Google Reader: Google Reader although is a feed reader itself, but does a very intelligent task of combining feeds as well. The feature is not really traceable at the first sight, but can be found if you dig deeper. All that you need to do is assign a folder to the feeds you need to mashup. Then go the settings page > click on folders and tags link and make that particular folder public. The public page so formed now has a feed of its own which constitutes all the stories of the feeds in the folder. So there you have it, a combined rss feed.

10+1. Feedity: Feedity comes to use when you want to create a RSS feed for a page that doesn’t provide one by default. It also lets you track webpage changes in real-time, pull web content for mashups, publish rss feeds on your website and aggregate rss feeds.

And That’s All. If you find any other useful tool , the comments are all yours!