S2 Form Processor takes data from any HTML form and inserts it as a new contact in your Highrise account

The S2 Form Processor for Highrise is a third-party extra that takes data from any HTML form and inserts it as a new contact in your Highrise account. Using configurable tags you can assign fields on your existing web forms to match up with Highrise data. There is a one-time $39 fee, but you can try it free for 15 days.

Learn more and see a video demo at Stringtwo Software. There's also a tutorial on how to setup the S2 Form Processor.