The best AI agent builder software in 2026

AI agents have matured fast, and I've been in the weeds the whole time. These days, AI agents are running a lot of my processes in the background. And it's not just me or the Zapier team: 84% of enterprises plan to boost AI agent investments.  Agents can run complex, org-wide workflows across your entire app stack. I work at Zapier, and I think it's the best option to make that happen, but I also know that's not a universal truth—and I'd rather help you figure out which one actually