Best TestZeus Alternatives in 2026

Open-source Firebase alternative

High-performance AI code editor built in Rust

Serverless MySQL database platform

Free, open-source code editor

The intelligent terminal built for modern developers

Where the world builds software

Develop, ship, and run applications

API platform for building & using APIs

Deploy app servers close to your users

Application monitoring & error tracking

Build, deploy & scale modern web projects

AI-powered developer productivity OS

Developer security platform

Feature management for modern teams

Code, build, deploy in your browser

DevSecOps platform

Continuous integration & delivery

Git solution for professional teams

Cursor is your AI coding agent for building ambitious software.

Fast, scalable inference infrastructure for running AI models in production

Agentic AI that helps SDETs author, execute, debug, and maintain tests 4X faster inside the IDE

AI-native Digital Teammate that handles your engineering team's full quality lifecycle

Lightweight open-source SDK for building AI agents and orchestrating AI models with existing code.

AI agents that automate game QA testing by playing games like a human