A CRM built around built-in calling and email so sales reps can work leads without leaving the app.
Visit CloseClose is popular with small, fast-moving sales teams (especially SaaS startups) because calling, SMS, and email are native to the CRM rather than bolted-on integrations — reps genuinely spend their whole day in one tab. It's less configurable than Salesforce for complex enterprise sales processes, which is intentional.