MockNeat
MockNeat is a free, open-source Java library for generating arbitrary data programmatically.
What MockNeat is
MockNeat is a free, open-source Java library for generating arbitrary data programmatically. Its fluent API can produce JSON, XML, CSV, and SQL data, and the library can also serve as a Java Random substitute or a mocking library. Documented generators cover Java types and objects, numbers, personal information, geography, internet data, financial data, and data formats. Java object creation options include constants, constructors, factories, fillers, and reflection. Generators are lazy: call get() or val() to produce a value. The tutorial describes reusable random factories backed by ThreadLocalRandom, SecureRandom, or the older Random implementation. MockNeat is installed through Maven Central or Gradle, and the getting-started examples list version 0.4.8. The maker's tutorial and API documentation explain its use. The project states that its data generators are not thread-safe. For REST API mocking, the maker directs users to a separate project, ServerNeat. MockNeat is a library rather than a hosted data service, so developers use it within their own Java projects.
Good
- Generates JSON, XML, CSV, and SQL data.
- Includes financial, geographic, and personal-data generators.
- Supports Maven and Gradle installation.
- Offers ThreadLocalRandom and SecureRandom-backed factories.
Watch out
- Data generators are not thread-safe.
- REST API mocking is handled by a separate project.
Who it suits
MockNeat is for Java developers who need to generate synthetic data in code, including structured JSON, XML, CSV, or SQL output. It also suits developers looking for random-value generation or Java object mocking.
Verdict
MockNeat provides a broad set of programmatic data generators for Java projects. Its lack of thread safety and separate REST-mocking project are important considerations for implementation.
The facts
Each one read from MockNeat's own pages, with the date it was checked.
The company
- Company details
- The opened maker pages identify an individual developer but do not state a founding date or company headquarters.checked 4 Oct 2026
- Maker
- The site identifies Andrei N. Ciobanu as the maker and lists Bucharest, Romania.checked 4 Oct 2026
- Maker location
- The maker profile on the official site lists Bucharest, Romania.checked 4 Oct 2026
What it does
- Current listed version
- The getting started page gives version 0.4.8 in its Maven and Gradle examples.checked 4 Oct 2026
- Data formats
- Its fluent API can generate JSON, XML, CSV, and SQL data programmatically.checked 4 Oct 2026
- Generator categories
- Documented generator categories include financial, geographic, internet, Java type, Java object, number, and personal information data.checked 4 Oct 2026
- Generators
- The documentation lists generators for Java types, personal information, geography, internet data, financial data, and data formats.checked 4 Oct 2026
- Installation
- The maker provides Maven Central and Gradle installation instructions and source-build instructions.checked 4 Oct 2026
- Integrations
- The maker provides Maven and Gradle dependency instructions for installing the library.checked 4 Oct 2026
- Intended users
- The maker’s pages describe MockNeat as a library for developers generating arbitrary data programmatically.checked 4 Oct 2026
- Lazy API
- Generators are lazy: call get() or val() to produce a value.checked 4 Oct 2026
- Object creation
- The documented Java object generators include constant, constructor, factory, filler, and reflect.checked 4 Oct 2026
- Object generation
- Its documented Java object generators include constructor(), factory(), filler(), and reflect().checked 4 Oct 2026
- Other use
- The maker says MockNeat can also act as a Java Random substitute or a mocking library.checked 4 Oct 2026
- Output formats
- The maker documents CSV and SQL insert generators, and describes generating JSON and XML through the API.checked 4 Oct 2026
- Product
- MockNeat is an open source, faker-like arbitrary data generator library written in Java.checked 4 Oct 2026
- Purpose
- Its fluent API lets developers create JSON, XML, CSV, and SQL data programmatically.checked 4 Oct 2026
- Random modes
- The tutorial describes reusable factories backed by ThreadLocalRandom, SecureRandom, or the older Random implementation.checked 4 Oct 2026
- Random options
- MockNeat provides factory objects wrapping ThreadLocalRandom, SecureRandom, or the older Random implementation.checked 4 Oct 2026
- Random values
- The library can generate primitive values, strings, and date-related values, and can act as a Random substitute.checked 4 Oct 2026
- REST API mocking
- For mocking REST APIs, the maker directs users to its separate ServerNeat project.checked 4 Oct 2026
- Support and documentation
- The maker provides a tutorial and official API documentation for the library.checked 4 Oct 2026
- Thread safety
- The tutorial states that none of the data generators is thread-safe.checked 4 Oct 2026
Alternatives to MockNeat
- 1
Benerator
Free planOpen sourceWebAPILinuxmacOS7.6Free plan - 2
RandomUser
Free planOpen sourceWebAPIExtensionSelf-hosted7.1Free plan - 3
Tonic Fabricate
Free planWebAPISelf-hosted6.8$29 usage-based - 4
Mockaroo
Free planWebAPISelf-hosted6.7From $60 a year - 5
Synthetic Data Vault
Free planAPISelf-hosted6.6From $250 a month - 6
Chance.js
Free planWebAPI6.4Free plan