Apollo Studio vs Mockoon

Apollo Studio is the interface for Apollo GraphOS, a platform for managing a supergraph and coordinating GraphQL development. Studio Explorer lets developers create, run, and share GraphQL operations, with query linting and autocomplete. GraphOS maintains a central registry of schemas and metadata, generates changelogs, and visualizes graphs. Teams can review proposed schema changes asynchronously and validate them against past requests from registered clients to check for breaking changes. Composition, validation, and approvals can connect to CI/CD pipelines. Access controls include granular roles and filtered graph variants for specific clients or partners. Studio tracks usage by field, client, and operation, showing trends, request volume, rates, errors, and service traces; OpenTelemetry support can send metrics to a chosen APM tool. Rover CLI supports schema publishing, CI checks, and local supergraph testing, while the Platform API enables custom automation. GraphOS supports any GraphQL API, including Federation and Connectors. Free costs nothing, supports up to three developers, and retains checks and insights data for one day. Developer starts at $5 a month, based on $5 per million requests.

Mockoon is a free, open-source tool for designing and running mock APIs locally. It supports OpenAPI and can fit into existing applications and API design workflows. Mock behavior can use dynamic templating, rule matching, JSON databases, proxy mode, webhooks, and TLS. The tool can record requests and responses from a real API to create mocks, and it supports proxying and integration testing. The open-source version permits unlimited mock APIs and routes, including parallel runs. Its CLI can run mocks in headless automated environments such as CI, GitHub Actions, and Docker; mocks can also run in serverless environments including AWS Lambda and GCP/Firebase Functions. The desktop app stores mocks locally, works offline without an account, and reports that mock content and request data are not sent to Mockoon. Pro adds real-time team collaboration, synchronized mocks, and deployment management on private infrastructure; it can be self-hosted on-premises, in a private cloud, or on isolated or air-gapped networks. Team is listed at €10 a month, billed annually at €120/license/year, tax excluded. Eligible companies can request one 14-day self-hosted Pro trial with five license slots using a verified work email, without a payment method.