1.OpenAPITools / openapi-generator
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
+18 stars
from 26,826 · score 2.94
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2.microcks / microcks
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
+6 stars
from 2,067 · score 1.95
3.standard-webhooks / standard-webhooks
The Standard Webhooks specification
+5 stars
from 1,781 · score 1.79
4.springdoc / springdoc-openapi
Library for OpenAPI 3 with spring-boot
+3 stars
from 3,740 · score 1.39
5.aklivity / zilla
🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.
+3 stars
from 1,688 · score 1.39
6.OpenAPITools / openapi-diff
Utility for comparing two OpenAPI specifications.
+1 stars
from 1,098 · score 0.69