SaaS Founders: What Tools Do You Use to Grow Your Business? “I Will Not promote”

I’m currently in the development stage of my SaaS and looking for advice on the best tools to help with growth. There are so many options out there, and I’d love to hear from those who have been through this journey. What tools have made the biggest impact on your SaaS growth? Whether it’s for marketing, analytics, customer engagement, or something else entirely—I’d love to know what’s worked (or what hasn’t). If you had to start over, what tools would be must-haves from day one? Looking forward to your recommendations! I will not promote