Could have been a little more descriptive on those "cool features".

I vote for WHMCS

I've been using WHMCS since day one (2008) and don't have any plans to stop using them. It is simply a great product, and their team is amazing.

We also use WHMCS - it's very good.

Right now WHMCS but it lacks features which we need so we are using till we find something better.

We use ClientExec and have enjoyed it thus far. We used to use WHMCS however they had a bug in the PDF generation part of the software and the support was less than helpful on fixing the problem. We have been with ClientExec for two years now with no hiccups.

Regards,
AB

Hostbill has been our favourite for a while. It keeps adding features all of the time. (More often than I make use of them) and does everything you need. A full lifetime non branded license is only $300, so its a no brainer.

Thumbs up to WHMCS!

The most popular one is WHMCS I'm already use and offer free to my clients, while Hostbill is very good too, I planned before to switch to, but unfortunately they stopped WHMCS migration.

Like many on here we use WHMCS and have done for years now, we started with Modernbill back in the day and it just wasn't good enough for our needs so we moved, never looked back.

We've been using hostbill and whmcs for a long time. I think it's save to assume that WHMCS is the industry standard

WHMCS is the most useful tool!

Another vote for WHMCS, 5.0 brought a few better reports and being to export data in csv is good for importing into a spreadsheet for Tax time.

I would like better cost tracking in it tough.

I agree, and also put back on the main admin page the listing of suspended accounts they took away in v5.3.