twittercounter is a web app that allows users to gather information about their (or anyone’s) number of followers.

Features:

• easy to use tool to search for follower numbers
• historical, trending and predictive information about follower numbers

The Good:

twittercounter is a good tool to get  a variety of statistics about your follower numbers for yourself or any other Twitter user. In addition to historical and predictive information you can also get a twittercounter badge for your blog, send tweets about your twittercounter info and view lists of top users.

The Not-so-Good:

Just about the only odd thing we could find about twittercounter was that sometimes, there appears to be a slight delay in getting accurate stats on follower numbers. If you care about absolute accuracy, then that could be a problem.

Tweetwave.com rates it: ♦♦♦

Remember the Milk is an app accessible from the web or phone that allows users to manage their task list(s).

Features:

• available for multiple platforms including iPhone/iPod Touch, Gmail, Blackberry, Windows Mobile, Google Gears, Twitter, Google Calendar, iGoogle Gadget
• follow @rtm and to add tasks send a DM
• assign tasks to other users, update tasks all via DM commands

The Good:

Remember the Milk (RTM) is a novel and increasingly popular way to manage task lists via Twitter or other platforms. RTM allows you manage tasks, get reminders, customize lists, locate your tasks on maps, and share, send and publish tasks. Some have said RTM has “reinvented the to-do list.”

The Not-so-Good:

RTM works very well and allows for a good level of customization. We’re not sure if this is a downside, really, but one thing we noted was the sheer overwhelming number of possibilities for RTM. There are so many platforms and ways to configure it, some users might have trouble with that. On the other hand, they may not, and will get the most out of a very useful application.

Tweetwave.com rates it: ★★★★

Retweetist is a web app that allows users to see what people, topics and links are being retweeted the most.

Features:

• website displays retweet information according to people, topics and links
• search feature to show how much any given person is being retweeted

The Good:

Retweeting is seen as a measure of the popularity or interest level in a certain person or topic. Retweetist displays all that information at its website. Pages break out the information in different ways, and there is a search feature so you can check on anybody, not just the highest ranked retweeted.

The Not-so-Good:

Retweetist does a good job of analyzing Twitter information according to the metric of the retweet (RT). Since we have to find something wrong with it, we choose the rather drab color scheme (not really a serious offence though).

Tweetwave.com rates it: ♦♦♦

Tempo is a time-tracking application that allows users to track time spent on projects and create reports based on a variety of criteria. One small part of it is the ability to tweet time reports back to Tempo.

Features:

• enter Twitter ID into Tempo to enable tweeting feature
• log time entries to Tempo by sending DM to @keeptempo

The Good:

If you or your company uses Tempo to track billable (or un-billable) time, then its Twitter integration is a great feature. All you need to do is send a DM with your time details to @keeptempo.

The Not-so-Good:

Tempo is much more than a Twitter tool, and the Twitter integration is just a small part of it. Tempo is a hardcore time tracking application. Look to it for that, not for any Twitter utility.

Tweetwave.com rates it: ♦♦

Twilert is a web app that allows users to track keywords in tweets and have email digests sent at selected intervals.

Features:

• register for free Twilert account (unique password created and validation required)
• select keyword(s) or phrase(s) to track and monitor on Twitter
• select intervals at which email digest(s) are delivered

The Good:

With Twilert it is easy to set up alerts (”Twilerts”) to track and monitor any keyword or phrase the user chooses. Twilert does the work of crawling through Twitter to find occurrences of those words and phrases and then emails you a digest of those tweets. Twilert is especially useful for those interested in tracking brand or corporate references (or anything like that). Advanced filtering is also possible, including for tweets from or to certain people, near a location, with positive or negative attitude, asking a question or containing links.

The Not-so-Good:

The only thing we think Twilert could improve on is the mechanism for selecting the intervals at which email digests are sent to users. No problem with the daily, weekly or monthly choice, but it only allows you to select on the hour (rather than hour and minute). Not a huge deal, but it would be nice to have that extra level of choice available.

Tweetwave.com rates it: ★★★

Twitoria is a web app that allows users to quickly find which of the people they follow on Twitter has been inactive so they can decide whether to continue following them, or not.

Features:

• easy-to-use and good-looking web UI
• only need to enter Twitter username (not password)
• user selects inactive period to display (week, 2 weeks, month, 2 months, 6 months, year)

The Good:

If you are into keeping tabs on those you follow on Twitter and want to prune those who have little or nothing to say, then Twitoria is an excellent tool for the job. All you need to do is enter your Twitter username and select the time period of inactivity you want to filter, and Twitoria displays a list of those who meet that criteria including their last tweet and its date. We like the fact that no password is required.

The Not-so-Good:

Twitoria really is easy to use and quickly identifies those on your list who don’t contribute much. Having said that, there were a couple of things we noticed during our test drive: 1) there is no auto-unfollow feature - you have to manually follow the link back to Twitter an unfollow from there and 2) there are ads displayed right in the middle of the displayed list of inactive users - we didn’t have a big problem with that, but some might.

Tweetwave.com rates it: ♦♦♦

Tweepler is a web app that allows users to manage their Twitter followers.

Features:

• login with Twitter credentials
• organize followers into 3 groups or “buckets” (unprocessed, follow, ignore)
• view details on followers
• move to “follow” bucket executes a follow on Twitter
• sort and search feature

The Good:

If you have more than just a few followers then Tweepler is a good tool to manage them. Some follow everyone back, some don’t. With Tweepler, you can figure out what makes sense for you with the detailed information provided on people following you. The sort and search feature is useful for identifying those with characteristics you find interesting.

The Not-so-Good:

While Tweepler does a good job of managing groups of followers, it is really premised on the idea that such sophisticated management is useful. That’s not for us to say. If you need it, then Tweepler is the right thing.

Tweetwave.com rates it: ♦♦♦

monitter is a web app that allows users to monitor tweets based on any set of keywords.

Features:

• easy to use UI
• uses search.twitter.com API
• keywords will yield relevant tweets streaming live in column view
• two different themes
• widget available for websites

The Good:

monitter is a very good tweet tracking application. Users can configure keywords/search terms and the number of columns for viewing. Tweets can also be limited geographically. Results can also be the subject of an RSS feed.

The Not-so-Good:

monitter does a very good job of searching for and tracking tweets. The only thing we could find that bugged us was a tiny thing: although each tweet has a time stamp, no date is given and there is no indication of which Twitter client was used to send the tweet.

Tweetwave.com rates it: ★★★

Twist is a web app that allows users to follow trends in Twitter.

Features:

• detailed graphic display of trending topics selected by users
• precise tracking of tweets with times and percentage of usage
• detailed “hot topic” information
• zoom detail on charts
• mouseover wikipedia information for hot topics
• dialog box shows recent tweets on hot topics
• ability to embed chart(s) in website(s)

The Good:

Twist is an excellent tool for those wanting detailed tracking analysis of trending topics in Twitter. Details are provided on the percentage of Twitter usage a topic represents and the time frame in which that topic was “hot”. The graphical display looks good too. You can even compare topics by separating them with commas in the search box.

The Not-so-Good:

We couldn’t really find much to complain about with Twist, which is a shame because we are really good at complaining. We did find one thing though: there does seem to be a delay between the live stream on Twitter and what Twist pulls up for individual tweets (the trending graph is current). Also (two things now), the only place you can drill down to individual tweets is from the “most recent tweets about this topic” window.

Tweetwave.com rates it: ★★★★

twtvite is a web app that allows users to announce meetings or events and track RSVPs, all via Twitter.

Features:

• simple form to create event
• ability to tweet the event
• tweets contain a link to RSVP and a hashtag #tweetup
• track RSVP responses

The Good:

twtvite is an easy to use form to create events and track RSVPs. Your invites can be “tweeted” or sent to Facebook and responses can be tracked.

The Not-so-Good:

twtvite does a great job. We couldn’t find any problems creating, tweeting and tracking RSVPs to events. Some folks may not be keen on a logo featuring a pig floating under three balloons, but that’s about it.

Tweetwave.com rates it: ♦♦♦♦