Yesterday, IGG Software announced iBiz 4, an update to its flagship timekeeping and billing software that adds several new features for freelancers and small groups.

iBiz 4 includes an all-new library of invoice templates, payment reminder and expense tracking functionality, faster editing and entry, and a new way to back up and restore your iBiz data.

The software extends its Mac OS X integration to include creating billing events from items in iCal. Previous versions of iBiz were already integrated with Address Book, but iBiz 4 lets you further organize clients into groups. It also has a spiffy new charting engine based on Core Animation.

iBiz Professional has also been updated, and includes a server component and two client licenses. iBiz Professional allows small teams to coordinate their time and to-do items across a Bonjour network.

iBiz 4 is $40, iBiz 4 Professional is $100, and both are available for download at IGG Software's website. Both include a 10-day free trial. Users who purchased iBiz 3 after January 5 also qualify for a free upgrade.

I got a lot of feedback from commenters yesterday about the app roundup of timekeeping and billing software. Turns out that little part about not having a comprehensive list didn't satisfy anyone!

So let's add to our list, and include five more apps and services to make you a billing maestro and timekeeping maven:

• iBiz
• Billings
• TimeLog
• OfficeTime
• Harvest

When I started freelancing last November, I knew I needed to get my act together about billing. I have a love/hate relationship with billing: I love getting paid, but I hate doing billing.

Thankfully, there are many, many apps that help you do this. If you're just starting out, you might be a little overwhelmed at just how many ways there are to track your time. This little post here isn't meant to be a comprehensive list, but instead a place for freelancers to start looking for a small-scale billing solution that works best for them.

Follow me for a look at a handful of apps and services that will help you keep your time tracking and invoicing in line:

• Billable
• Fanurio
• On The Job
• WorkTimer
• Tempo
• LiveTimer
• Freshbooks