Mocklantis

Mocklantis is a desktop mock server for creating mock APIs and testing HTTP/REST endpoints. Its site describes it as a way to build faster by simulating APIs and accelerating development workflow with a desktop application.

The product includes an intuitive interface for managing mock servers and endpoints. It offers a clean workspace for organizing multiple servers, quick navigation between endpoints, dark theme support for long coding sessions, and auto-save. Mocklantis also supports stateful scenarios through a state machine, with a visual flow editor for dragging and connecting states, flexible binding between endpoints and states, advance control over which endpoints move the state forward, and a one-click reset to return a scenario to its initial state.

Several functions focus on testing edge cases and failure conditions. These include response corruption, latency injection, error simulation, rate limiting, and multiple responses for the same endpoint. Multiple responses can run in sequential mode, random mode, or repeat-last mode, and the interface also provides request count and expire time controls for usage limits and response expiration. It supports WebSocket mocking with conversational, streaming, and triggered modes, and webhook handling with many-to-many binding, auto-retry, and four auth types. The tool also includes API recording to capture real API responses and auto-create mocks, plus proxy mode for forwarding unmatched requests to real APIs in hybrid testing.

Mocklantis is described as suitable for solo developers and teams, with use cases for microservices, frontend development, QA work, and API design. It is available as a free desktop download. The page also refers to it as a modern API mocking platform and a native mock server for REST, WebSocket, and SSE.