Monetization Backlash: How Open-Source Tools Are Reshaping the API Testing Market

API tool selection is shifting in 2025 as developers increasingly reject monetization paywalls and cloud-lock-in enforced by market leader Postman. Open-source alternatives like Bruno are gaining significant traction by prioritizing transparency, local-first workflows, and git integration—signaling a broader developer preference for ownership and control over proprietary platforms. For development teams, this landscape change creates genuine alternatives that challenge enterprise-dominated tooling.