Twitter is a great social messaging service and business networking tool. It allows you to keep up to date on what friends are doing, tell the world what’s up in your life and meet new people. We use Twitter a lot and not just via twitter.com. Here is our list of the 10 Best Twitter applications.

1. Tweet Scan
Tweet Scan is a real-time search engine for Twitter. It searches all public messages on Twitter. You can search by keyword, author, and date with results available via email, RSS, and Twhirl.
Tweet Scan is great. We use it to see who is talking about Bemba and who shares links on Twitter using the Bemba service.
Another good search engine is Summize.

2. Twittermail
On the road a lot? Have email on your smart phone? Then TwitterMail is for you. It’s the best way to send tweets via email. Sign up on the Twittermail website with your Twitter username and password, get a ’secret’ email address and program that in your smart phone. Done!
I use Twittermail everyday from my Nokia E61i.
Read the full Mashable Twittermail review to learn about all the features.

3. Autopostr
Autopostr.com is a great and simple service for connecting Flickr to Twitter. Just put an # in the title of every Flickr photo you want to be posted on Twitter and Autopostr will automatically send a tweet with your new post to all your Twitter followers. All Autopostr needs is your Flickr ID and your Twitter username (no password).
Autopostr works like a charm.

4. Twitstat
The creator of Twitstat – Michiel Berger – was not happy with Twitter mobile (m.twitter.com). So he built his own. And it rocks! Twitstat shows the last 10 tweets of friends, allows you to update and shows your received @replies. Twitstat is a great Twitter mobile client.

5. Twitterfox
TwitterFox is a Firefox extension that notifies you of your friends’ tweets (former name is TwitterNotifier). Twitterfox adds a tiny icon on the status bar that notifies you when your friends update their tweets. Also it has a small text input field to update your tweets.
Twitterfox is a good Twitter Firefox add-on.

6. Twubble
Twubble is a nice service that helps you find more people to follow. It searches your friend graph and picks out people who you may like to follow. It really does a fine job at this. I started following several people after using Twubble.

7. TwitterSnooze
Are some of your Twitter friends at a conference and you are not? Don’t want to receive all those conference tweets? TwitterSnooze lets you temporarily unfollow Twitter friends for a few days.
Note: as Dave Winer points out, there is one undesired side-effect: “when a person is unsnoozed, Twitter will send them an email alerting that person that you are now following them again”.

8. MobyPicture
Mashable’s Kristen Nicole writes: “MobyPicture is a mobile photo-sharing site, where you can send in images to your account directly from your cell phone”. MobyPicture can post directly to lots of online services, not just Twitter.
We use MobyPicture to easily post photos on Twitter that we don’t post on Flickr.

9. Twistori
Twistori is a “first step in an ongoing social experiment.” It pulls public tweets from Twitter containing specific keywords: i love, i hate, i think, i believe, i feel, and i wish. It then publishes the tweets anonymously in a non-stop, auto-updating stream. Not very useful perhaps, but it’s just a nice example of what you can do with Twitter data. Take a look at http://twistori.com.

10. Bemba
Yeah, of course we finish the list with our own service. Bemba offers the easiest way to share links on Twitter. Straight from your browser, no copy & paste and of course Bemba shortens the URL. And you can see what other people are sharing on Bemba.com. Learn more about Bemba at www.bemba.com/about

What’s your favorite Twitter app?
Is it Twittermail? Twitterfox? Or is it some great Twitter application, desktop or web, that’s not in our list? Let us know! Leave a comment below or send an @reply to Bemba on Twitter.