Random Data
Mockaroo
Data Creator
Random Data Monster
DUMMY DATABASE
DDL to Data
Generate Data
RANDOM.ORG
ThreadMine.dev
ThreadMine analyzes Java/JVM thread dumps in seconds. Upload or paste a dump (no signup, up to 10 MB) and get automatic detection of deadlocks, thread leaks, pool exhaustion, CPU hotspots and virtual thread pinning (Project Loom), plus a health score and a shareable report.
Parses HotSpot, OpenJ9, Zing and GraalVM. Paid plans add an AI assistant that explains the root cause and suggests a fix, multi-dump comparison/timeline, history, integrations and an API. A free, no-login web analyzer is the entry point โ the same low-friction flow as fastThread.io or jstack.review, but with automatic problem detection and AI on top.
Privacy: no account, TLS + AES-256, temporary dumps, zero AI-data retention.
Random Data
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Mockaroo - A realistic data generator to test your app
Data Creator - Data generator that can create a table filled with pseudo-random content.
Random Data Monster - Random Data Monster is a comprehensive suite of advanced random data generation that features generating secure passwords, names, numbers and more than 30+ Google Sheets custom functions to generate random data.
DUMMY DATABASE - Generate and manage synthetic datasets easily with DUMMY DATABASE
DDL to Data - Turn SQL schemas into realistic test data in seconds. Perfect for testing, demos, and development.
Generate Data - GenerateData.com: free, GNU-licensed, random custom data generator for testing software