Ontraport by itself can do amazing things, but sometimes they don't offer the exact service that you need for your business. But don't worry, there are several great tools that enhance features that Ontraport offers. Some of them I use daily.
When you need to set conditional shortcodes (display/hide part of your page in a certain condition), create multistep forms, 2-way SMS messaging, update recurring payments, verify an email address or a phone number in real-time, and many others amazing features. Just click here for more details.
AccessAlly is mainly a Learn Management Software and a Membership platform, so since Ontraport introduced their own membership solution, it is not so much popular. But there are still users that prefer to use their Wordpress website with AccessAlly as it offers you additional features and also the option to switch from one CRM to another more seamlessly.