BitDive vs Signet
BitDive
bitdive.io
Signet
signet-framework.devSide by side
| Figure | BitDive | Signet |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 0 |
| Spec score · Contract Testing Tools | 8.0 (#11) | 7.0 (#21) |
| Integrations | The integrations page lists 49 supported technologies, including Java, Kotlin, Spring Boot, PostgreSQL, MongoDB, Kafka, JUnit 5, Testcontainers, and Maven. | Signet documents use of AWS ECS Fargate for broker deployment, Docker Compose for self-hosting, and CI/CD webhooks. |
| Intended users | BitDive describes its intended audience as modern JVM engineering teams verifying changes against real service behavior. | Signet is designed for companies experiencing integration and end-to-end testing pain who want to introduce contract testing. |
| Purpose | BitDive captures runtime behavior from Java and Kotlin services and turns recorded executions into replay-based JUnit suites for verifying code changes. | Signet is an open-source, self-hosted framework for spec-driven contract testing of microservices. |
Plans
In their own words
BitDive
BitDive is a freemium API, web, and self-hosted tool for Java and Kotlin teams that want to verify code changes against recorded service behavior. Its agent captures method calls, SQL queries, HTTP requests, Kafka messages, JVM metrics, and exception traces, then compares behavior before and after changes to reveal SQL drift, extra HTTP calls, and performance regressions. Recorded executions become replayable JUnit 5 tests that run with standard Maven or Gradle tooling. The agent supports Java 8 through 21 and captures bytecode behavior without source changes. BitDive exposes runtime context and trace operations through MCP for Cursor, Windsurf, and Claude. It lists 49 supported technologies, including Spring Boot, PostgreSQL, MongoDB, Kafka, JUnit 5, Testcontainers, and Maven. Deployment options include hosted SaaS, on-premise, and air-gapped installations. Security details specify TLS 1.3 in transit, AES-256 at rest, and in-JVM masking of sensitive fields. Developer Use costs nothing; Company Rollout pricing is custom.
Signet
Signet has no write-up on Specifiction yet; its figures are above.