Beeceptor vs Citrus

Beeceptor is a developer-focused API simulation platform for mocking services, virtualizing them, testing contracts, and simulating failures. It supports HTTP, HTTPS, HTTP/2, mTLS, REST/OpenAPI, SOAP, GraphQL, and gRPC. Users can build no-code mocks with request-matching rules and set response status codes, headers, and bodies. Uploading an OpenAPI specification can create a populated mock server with AI-generated data. Beeceptor can proxy requests to live backends, record traffic, and switch to mock behavior when a backend is unavailable. Latency, timeouts, and errors can be simulated to check client resilience. Its CLI exposes a localhost service through a public HTTPS URL and runs on Windows, macOS, and Linux. Management APIs support mock-server configuration, while MCP connectivity supports AI agents including Claude and Cursor. API Connections store OAuth credentials and generate tokens for outbound requests. Beeceptor says it is SOC 2 Type II audited, adheres to ISO 27001, and complies with GDPR; it also says data is encrypted in transit and at rest. The free plan has public endpoints, a 1 MB request payload limit, and cleanup rules for unclaimed endpoints.

Citrus is a free integration-test framework for messaging applications and microservices. It can make a test act as both client and server across messaging interfaces, send and sequence messages, and validate payloads and other elements. Supported endpoints include HTTP, Kafka, JMS, Apache Camel, mail, FTP/SFTP, OpenAPI, SOAP, Docker, Kubernetes, Knative, SQL, and SSH. Validation covers JSON and XML, XML schemas, DTDs, and database data. Test cases can use loops, delays, retries, parallel sections, and timeouts. Tests are written in Java, XML, YAML, or Cucumber BDD features. Citrus integrates with JUnit 5, Cucumber, JBang, Quarkus, Spring Boot, TestNG, and JUnit 4, with Maven and Gradle setup guidance. It runs on Linux and requires Java 17 or newer since version 4.0. Citrus is Apache-licensed freeware for testing commercial applications.