TripIt

Tripit is an app that manages your travel planning. With TripIt, you forward incoming bookings to plans@tripit.com and the system manages the rest.

Over the past year TripIt has continued to iterate on its feature set - introducing LinkedIn integration, better mobile functionality, more social networking features, and other goodies. In short, it's user experience continues to rock!

BooRah

BooRah is a restaurant review site that we first reviewed earlier this year and has come on in leaps and bounds over 2008. BooRah uses semantic analysis and natural language processing to aggregate reviews from food blogs. Because of this, BooRah can recognize praise and criticism in these reviews and then rates restaurants accordingly. BooRah also gathers reviews from Citysearch, Tripadvisor and other large review sites.

BooRah also announced last month the availability of an API that will allow other web sites and businesses to offer online reviews and ratings from BooRah to their customers. The API will surface most of BooRah's data about a given restaurant, including ratings, menus, discounts, and coupons.

BlueOrganizer (AdaptiveBlue)

Disclosure: AdaptiveBlue's founder Alex Iskold is a feature writer at RWW.

AdaptiveBlue are makers of the Firefox plugin, BlueOrganizer. As we wrote in January this year, the basic idea behind BlueOrganizer is that it gives you added information about webpages you visit and offers useful links based on the subject matter.

Over the past year the company has been working on a new product, called Glue. Launched last month, Glue is a more social networking oriented version of BlueOrganizer - it connects you to your friends based around things like books, music, movies, stars, artists, stocks, wine, restaurants, and more. We think the company has diversified smartly in 2008, by integrating social networking and mobile functionality into its products.

Zemanta

Zemanta is a blogging tool which harnesses semantic technology to add relevant content to your posts. While it didn't make either of our 'Semantic Apps to Watch' lists in November, a number of commenters pointed it out as something they use. In September we covered a major upgrade to Zemanta's service, allowing users to specify the sources they want to see in the suggestions list that Zemanta provides. Users can now incorporate their own social networks, RSS feeds, and photos into their blog posts. As we noted, this makes Zemanta a lot more appealing to established bloggers who are in less need of suggestions and more in need of automation.

Zemanta's API is also being used by startups, including semantic bookmarking service Faviki - which we mentioned in our second Watch-list. So all up, we think Zemanta has done enough this year to be included in our top 10 list.

UpTake

Semantic search startup UpTake (formerly Kango) aims to make the process of booking travel online easier. In our review in May, we explained that UpTake is a vertical search engine that has assembled what it says is the largest database of US hotels and activities - over 400,000 of them - from more than 1,000 different travel sites. Using a top-down approach, UpTake looks at its database of over 20 million reviews, opinions, and descriptions of hotels and activities in the US and semantically extracts information about those destinations.

And now please let us know in the comments what you think of our selections. Do you think we've picked the best 10 Semantic Web products of the year?