Best API Design Software for Java

Treblle is a federated API Intelligence platform that unifies API visibility, governance, and security in a single enterprise-grade solution. Designed for complex environments, Treblle connects seamlessly through one integration and supports deployment on-prem or in private cloud—meeting even the strictest regulatory and data residency requirements. Once integrated, Treblle instantly maps your entire API landscape with automatic discovery, generating real-time inventories and eliminating shadow APIs. Its observability tools track every request and response, surfacing performance issues, anomalies, and SLA breaches across all services. Advanced analytics give teams insights into traffic, latency, endpoint usage, and client behavior, making debugging, optimization, and scaling easier and 15 times faster. Security is built-in, not bolted on. Treblle provides runtime protection, threat detection, schema validation, and governance policies to safeguard APIs across environments. It empowers DevOps and platform teams to implement shift-left strategies and enforce consistent practices across the lifecycle. With its AI-powered Integration Assistant, Treblle simplifies onboarding and improves developer workflows. Whether you’re running internal microservices or customer-facing APIs, Treblle gives you the clarity and control to move faster, reduce risk, and scale with confidence.

Apache APISIX boasts a comprehensive suite of traffic management capabilities, including Load Balancing, Dynamic Upstream, Canary Release, Circuit Breaking, Authentication, and Observability. This open-source API Gateway is designed to effectively manage microservices, ensuring optimal performance, enhanced security, and a scalable infrastructure for all your APIs and microservices. Notably, Apache APISIX is the pioneering open-source API Gateway equipped with an integrated low-code Dashboard, offering a robust and adaptable user interface tailored for developers. The Dashboard simplifies the operation of Apache APISIX through an intuitive frontend, making it accessible for users. As an open-source project, it is continually evolving, and contributions are always welcome. Furthermore, the Apache APISIX Dashboard is highly responsive to user needs, allowing the creation of custom modules to meet specific requirements while still providing a comprehensive no-code toolchain. This adaptability ensures that users can enhance their experience while working with the platform.