Best query testing tools in 2025
Run SQL queries on diverse data without preparation.
Free
open
A web-based application for formatting and viewing JSON data.
Paid
open
Generates high-quality labels for machine learning datasets.
Free
+ from $0.08/object
open
Real-time data gathering for search results and brand monitoring.
Paid
+ from $14.99/m
open
Generate large volumes of synthetic data for various projects.
Free
+ from $5.00/m
open
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Download sample data
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Practice SQL queries
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SQL command testing
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SQL testing
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Sample data analysis
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Understanding SQL relationships