The top performance testing tools in software development include:

• JMeter – An open-source tool by Apache for load testing web applications and APIs.
• LoadRunner – A powerful enterprise tool by Micro Focus for performance and stress testing.
• Gatling – A developer-friendly tool for load testing with high scalability.
• Locust – A Python-based tool for simulating user traffic efficiently.
• NeoLoad – A modern performance testing tool with real-time analytics.

These tools help identify bottlenecks, ensure scalability, and enhance application performance. Institutes like Uncodemy offer hands-on training in these tools for real-world testing expertise.