4
Mockaroo
Mockaroo creates synthetic test data and mock back-end APIs for UI development.
Free planWebAPISelf-hosted
6.7From $60 a year
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5
Synthetic Data Vault
Synthetic Data Vault (SDV) is a Python library and software platform for generating synthetic data from real data.
Free planAPISelf-hosted
6.6From $250 a month
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6
Chance.js
Chance.js is a JavaScript library for generating random values for automated tests and other uses that need sample data.
Free planWebAPI
6.4Free plan
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7
JSON Schema Faker
JSON Schema Faker generates synthetic JSON data from JSON Schema definitions.
Free planWebLinuxmacOSSelf-hosted
6.4Free plan
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8
MOSTLY AI
MOSTLY AI is a data intelligence platform for accessing production data and generating synthetic, mock and simulated data, with tools for data analysis.
Free planWebAPILinuxSelf-hosted
6.4Free plan
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9
Fishery
Fishery is a JavaScript library for preparing objects as test data and for other situations where JavaScript data needs setup.
Free plan
6.1Free plan
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10
Redgate SQL Prompt
Windows
6.1From $210 a year
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11
Snowfakery
Snowfakery generates synthetic data from YAML recipe files, including records linked across tables.
Free planAPILinuxSelf-hosted
6.1Free plan
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12
Bogus
Bogus is a synthetic data generator for C#, F#, and VB.NET, adapted from faker.js.
Free planLinuxmacOSSelf-hostedWindows
6.0Free plan
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13
Faker.js
Faker.js is a JavaScript tool for generating fake but realistic data for testing and development.
Free planWeb
6.0Free plan
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14
DummyJSON
DummyJSON is a free hosted REST API that supplies fake JSON data for frontend development, building, and testing without backend setup.
Free planWebAPI
5.9Free plan
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15
ApexSQL Generate
ApexSQL Generate is paid Windows software that populates SQL databases with synthetic test data.
Self-hostedWindows
5.8
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16
Mimesis
Mimesis is a free, open-source Python library for generating synthetic data across languages and locales.
Free planLinux
5.8Free plan
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17
Synthea
Synthea is a free, open-source generator that creates synthetic patients and medical histories.
Free planSelf-hosted
5.8Free plan
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18
Faker
Faker is a free Python package for creating synthetic data for database bootstrapping, XML documents, stress testing, and anonymizing production data.
Free planSelf-hosted
5.7Free plan
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19
Generatedata
Generatedata creates synthetic test data through a browser interface, with a self-hosted script for users who want to run it themselves.
WebSelf-hosted
5.7$25 one-time
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20
EMS Data Generator for MySQL
Windows
5.6
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21
Synthesized
Synthesized creates governed test data scenarios for enterprise software releases, SAP transformations, and AI-agent validation.
WebAPILinuxSelf-hosted
5.6
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22
GenRocket
GenRocket generates synthetic test data from user-defined structures, rules, and scenarios.
WebAPISelf-hosted
5.5
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23
Datafaker
Datafaker is a free, self-hosted library for Java, Kotlin, and Groovy projects that generates synthetic data.
Self-hosted
5.3
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24
MockNeat
MockNeat is a free, open-source Java library for generating arbitrary data programmatically.
API
5.2
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25
factory_boy
5.1
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26
dbForge Studio for SQL Server
Devart
WindowsmacOSLinux
4.9
Visit
27
YData Synthetic
LinuxmacOSWindows
4.7
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