Free and open first

Best Test Data Generation Tools in 2026

Generating test data can help you exercise applications and databases without relying on production records. Compare the available generation modes, supported data formats, and relational data features, then check API data generation and database connectors for workflow fit. Deployment options and generation limits add practical distinctions, while free-plan availability and paid-from pricing help you assess cost. Benerator, YData SDK, and dbForge Studio for PostgreSQL are among the entries to consider. Match the listed capabilities to the data your tests need and how you intend to generate and use it.

28 apps
Research read 23 Sept 2026
How the order is worked out

1

Benerator

Free plan Open source APILinuxMac+3

9.3 Free plan Visit site
2

RandomUser

Free plan Open source APIExtensionSelf-hosted+1

RandomUser provides configurable synthetic records for testing through a free API, with several output formats and request controls.

8.7 Free plan Visit site
3

Bogus

Free plan LinuxMacSelf-hosted+1

Choose Bogus if you develop in C#, F#, or VB.NET and need configurable synthetic data for testing. Its locale support and randomizer seed help with varied or repeatable data sets.

7.6 Free plan Visit site
4

Chance.js

Free plan APIWeb

Chance.js provides configurable generators for test data, including repeatable sequences and unique arrays. Its pseudorandom values should not be used where cryptographic randomness is required.

7.3 Free plan Visit site
5

JSON Schema Faker

Free plan LinuxMacSelf-hosted+2

Choose JSON Schema Faker if you need an open source generator for schema-based synthetic JSON, with repeatable output, CLI support and configurable generators.

7.3 Open source Visit site
6

DummyJSON

Free plan APIWeb

DummyJSON provides sample resources, mock endpoints, and request-inspection tools for frontend development.

7.2 Free plan Visit site
7

MOSTLY AI

Free plan APILinuxSelf-hosted+1

MOSTLY AI combines synthetic-data generation, data analysis, connectors, and deployment choices.

7.1 Free plan Visit site
8

Faker

Free plan Self-hosted

Choose Faker if you need a free Python package for synthetic values, localization, custom providers, or test fixtures.

7.0 Free plan Visit site
9

Faker.js

Free plan Web

Faker.js provides broad synthetic data generation for development and testing, with multiple installation routes and framework examples.

7.0 Free plan Visit site
10

Generatedata

Free plan Self-hostedWeb

Generatedata supports varied synthetic data types, linked geographic values, and many export formats.

7.0 Free plan Visit site
11

Mockaroo

Free plan APISelf-hostedWeb

Mockaroo combines synthetic data generation with API mocking, with multiple formats and data-type options.

7.0 Free plan · paid from $60/yr Visit site
12

Synthesized

Free plan APILinuxSelf-hosted+1

Choose Synthesized if your enterprise team needs governed test data for QA, SAP transformations, or AI-agent validation, especially across relational databases.

7.0 Free plan Visit site
13

Snowfakery

Free plan APILinuxSelf-hosted

Snowfakery offers recipe-based synthetic data generation with file, database, Salesforce, and Python integration options.

6.9 Open source Visit site
14

Datafaker

Free plan Self-hosted

Datafaker offers broad synthetic-data generation with extensive provider and format options. Check the Java requirement and deprecated XML support before choosing a version.

6.8 Free plan Visit site
15

Fishery

Free plan

Choose Fishery if your project needs reusable JavaScript factories for setting up objects, with TypeScript support available when needed.

6.8 Free plan Visit site
16

Mimesis

Free plan Linux

Mimesis covers a broad range of synthetic data types and structured dataset needs. Check its Python compatibility and the pytz requirement for certain timezone methods before choosing it.

6.8 Open source Visit site
17

Tonic Fabricate

Free plan APISelf-hostedWeb

Fabricate covers synthetic data generation across structured records, documents, APIs, and workflows, with Free, Plus, and custom Enterprise options.

6.8 Pricing on request Visit site
18

GoFakeIt

Free plan APISelf-hosted

GoFakeIt offers a broad set of synthetic-data generators alongside customization through tags, custom functions and templates.

6.7 Open source Visit site
19

Synthetic Data Vault

Free plan APISelf-hosted

SDV offers data generation, quality evaluation, and customization across several data structures.

6.7 Free plan Visit site
20

factory_boy

Free plan

factory_boy provides flexible fixture generation for Python tests, including ORM integrations, related objects, and reproducible randomness.

6.6 Open source Visit site
21

Synthea

Free plan Self-hosted

Choose Synthea if you need a free, customizable source of synthetic patient histories for research, policy simulation or Health IT work.

6.6 Free plan Visit site
22

dbForge Studio for SQL Server
by Devart
Free plan WindowsMacLinux

6.4 Free plan · paid from $249.95/yr · 30-day trial Visit site
23

MockNeat

Free plan API

MockNeat offers a broad fluent toolkit for producing synthetic data directly in Java applications.

6.4 Free plan Visit site
24

ApexSQL Generate

Free trial Self-hostedWindows

ApexSQL Generate offers configurable test-data generation for supported SQL databases, with relational consistency and multiple export formats.

6.0 Pricing on request Visit site
25

YData Synthetic

Free plan LinuxMacWindows

5.8 Free plan · paid from $1 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

More in Developer Tools