This year, the BBC News website has done the hard work for you. We've selected a few companies, not all of which will attend 3GSM, that we think will be interesting to watch over the next 12 months.
A company that offers maps, traffic information and even information about the number of available parking spaces at a given car park direct to mobile phones.
MX Data, based in Cheshire was founded in 2004 by Ian Thompson-Smith.
Its Traffic TV service offers users a map of the UK, showing all the motorways and A-roads. Users can zoom in on a particular road to see live pictures of the traffic.
MetroTV, available for users in Reading, Sheffield and Birmingham, is a regional version of the service, which allows users to drill down to find out specific times of buses, information about road works and whether there are spaces available in specific car parks.
50,000 people have downloaded the service which is available to anyone with a mobile phone that has a colour screen and web access.
The firm has already launched in the US, is planning a Blackberry version of the service and is looking forward to rolling out the service across Europe.
Set up in 2003, the company offers wireless communication between networks of machines, sensors and mobile phones.
Products include wireless rat traps, which send alerts to mobile phones if a rodent is spotted.
The company is working on wireless billing for supermarkets such as Tesco and Sainsbury, as well as a mobile monitor system for yacht owners to keep their eye on their boats via their phone.
Founded 18 months ago, the service currently works with Chiltern Railways, offering tickets direct to mobile phones.
Users buy their ticket on the internet and it is delivered to their mobile phone in the form of a barcode. 
Currently it can only be scanned by ticket inspectors but at the end of this month, gates are being installed at Marylebone station which will open when the phone is scanned over them.
The next stage for the firm is to allow users to purchase tickets on their mobile phone. This service should be available from March 2007.
3,000 people are currently registered for the service. YourRail hopes to spread the system to more of the rail network, and is currently speaking to a number of other train companies.
Tocmag is a free user-generated mobile content service.
It allows users to create their own "Tocmags", up to six pages of video, audio, text and images, which can be shared with the public through its website.
The company officially launched in November 2006. Since then over a million 'Tocmags' have been downloaded.
As well as fanzines and magazines about celebrities, Tocmag has attracted some criticism for a magazine showing how to roll a joint and listing the top ten activities to do when "caned". It was removed from the site following a complaint from a teacher.
Founded in 1999, by David Springall, YoSpace launched in Netherlands with Vodafone. It is the company behind 3 and O2's user-generated content services, SeeMe TV and LookAtMe respectively.
The services are similar to video-sharing site YouTube but contributors are paid each time their clip is downloaded. 
SeeMeTV has generated 12 million downloads since its launch and handed over £250,000 to contributors.
The firm, which has just been bought by publishing house Emap, plans to add a new European and North American operator to its books soon.
This Swedish developer of mobile devices is worth a mention not least because it was a pioneer in buttonless, touchscreen mobile phones long before the iPhone came along. 
It introduced its first touchscreen controlled mobile in 2004 and will be showing off its new mobiles at 3GSM.
"We will be exhibiting a strong product, which shows that one does not need to be the biggest to be at the forefront of development," said Tommy Halberg, chief executive of the company.
Another Swedish company, nominated for the Most Innovative Technology Development at the Global Mobile Awards, will be at 3GSM showing off its patented invention, the ippi.
Designed for groups such as older people, who may not use advanced mobile phones, the ippi is a box that connects to the TV. 
It allows the user to receive and reply to text messages from mobile phones including those containing images or video.
So a picture of a new grandchild can be viewed on the television, without the recipient needing to own or know how to use a mobile.
A built-in microphone allows users to send a response and images stored in its built-in memory can also be sent.
