JMock

High-performance, business-grade mock data generation framework.
Realistic data at 2M+ records/sec with 95 built-in functions.

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2M+ records/sec generation speed

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Full i18n with Chinese & English

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SPI-based plugin architecture

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Rich built-in mock function library

Quick Example

{
  "name": "@Name()",
  "email": "@Email()",
  "age": "@Integer(18,65)",
  "city": "@City()"
}

{
  "name": "Alice Johnson",
  "email": "alice.j@example.com",
  "age": 32,
  "city": "San Francisco"
}