High-performance open-source synthetic data engine. Uses LLMs for schema design and vectorized NumPy for deterministic, scalable generation.

Python library to generate and validate credit card numbers. Features a fast, offline BIN lookup using a local database. Zero dependencies, no API keys needed. Perfect for generating test data.

A Python module that provides a unified interface to access mock galaxy catalogs and more for the LSST DESC

Synthetic Mock Data 🔮

Generate random strings that make sense.

A minimal activitywatch client that generates fakedata

Fake data generators for everything Earth (and beyond!)

A Python wrapper for the Mockaroo API 🦘 + 🐍.

Generate synthetic observational datasets from quantum-geometry signatures for LIGO, EHT, and gravitational wave detectors with realistic noise models and instrument specifications

🎩 Generate JSON/YAML/XML... mock data with a structured template

Generate fake data

Creates bank mock data in a simple way

Generate, Load, Develop and Test with consistent relational datasets!

pseudo_big_data is a Python package that generates mock-up datasets for various data types and sizes for testing and development purposes.

Free Open Source Mock Data Generator - A powerful desktop application and REST API for generating realistic fake data, test data, and sample data for testing, development, and prototyping.

leblanc is a modular Python library designed for the rapid generation of large-scale synthetic datasets across various business sectors. It is primarily built using Pandas, NumPy, and Faker to create realistic, structured DataFrames suitable for Data Science training, testing, and exploratory data analysis (EDA).

モックデータを生成する軽量 DSL パーサ（CSV/JSON対応、Python 3.11+）

A flexible web tool to generate synthetic CSV datasets using Regex patterns, Gaussian distributions, and Linear trends. Built with FastAPI and Alpine.js.

A python script which used to send ghcnd data

For generating mock supernodes in DSE Graph