Typical form designer software simply notifies you via email when the form is completed. Bitrix24 does the same (plus mobile push notification, if necessary), but it also creates a new CRM record - lead, contact, company, deal, quote or invoice. This means that Bitrix24 can automatically run marketing campaigns (email or telemarketing) based on the information entered in the form. And Bitrix24 will calculate conversion ratio for you - how many filled out the form and how many made the purchase. Product catalog and online payments are already integrated in Bitrix24 web form designer. This means that your website visitors can not only schedule online consultation, but pay for it right away as well - this information will be reflected in your CRM as well. Oh, and Bitrix24 CRM is free, just like the form designer. Pretty cool, isn't it?
Bitrix24 CRM manual is available here.
If you are interested in buying self-hosted editions of Bitrix24, which come with API, CMS and source code, can be easily customized and integrated with other tools, please download a trial version here.