Highrise is a simple CRM by 37signals (Basecamp) for tracking leads and follow-ups. See features and integrations -- note: closed to new signups since 2018.
Highrise is a simple, no-frills CRM built by 37signals (the makers of Basecamp) to help small teams and freelancers track leads, log notes and emails, and stay on top of follow-ups without a steep learning curve. It centralizes contact details, communication history, tags, and custom fields in one place, and lets teams set reminders, assign leads, and send bulk emails with open/click tracking. Highrise integrates with dozens of third-party tools across accounting, email marketing, forms, live chat, and reporting, and ships with native iOS and Android apps for managing contacts and tasks on the go. Highrise stopped accepting new signups on August 20, 2018; it now serves its existing customer base only, though 37signals has committed to keeping the platform secure, reliable, and fast indefinitely for current users.