FeedbackSpark's answer:
Range of powerful features designed specifically for digital product teams:
madkudu - We’re building a better knowledge base
Back Market - the refurbished (super) market
Salesforce - CRM software solutions and enterprise cloud computing from salesforce.com, the leader in CRM and platform as a service.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Google Forms - Simple web forms from Google.