Free for Data Engineers
The Data Engineer's Testing Toolkit
Generate realistic, production-grade test data for your pipelines. IoT streams, CDC events, financial transactions and more — with real-world data quality issues built in.
10 SchemasDirty Data InjectionKafka-Ready NDJSONUp to 1M RowsNo Server Storage4 Output Formats
10
Schemas
4
Formats
1M+
Rows / run
timestamp
device_id
fraud_flag
user_id
op: INSERT
event_type
amount: €149
kafka_topic
kafka-consumer — data-pipeline
STREAMINGIoT Sensor Stream
LIVE
format: NDJSONencoding: UTF-8
records: 0
Also from HandsOnDataEng
StreamLab
Now test your pipeline
with live streaming data
The Data Generator gives you batch files. StreamLab gives you a live WebSocket feed of realistic e-commerce events — purchases, cart events, signups — flowing continuously into your Kafka topic, Spark job, or Python script. No Docker. No config files. Just connect and stream.
Connect in under 60 seconds
Realistic event state machine
Privacy-safe generated data
Works with Kafka, Spark, Python
Try StreamLab Free
Completely free
No credit card needed
No credit card needed
WebSocket — LIVE
Connect with Python:
import websocket
ws = websocket.create_connection(
"wss://streamlab.handsondataeng.com"
)
Incoming events:
purchaseuser_2847 · €94.50 · 3 items
page_viewuser_1923 · /products/kafka-course
add_to_cartuser_3341 · item_id: TF-AZ-01
signupuser_4102 · source: google
purchaseuser_0891 · €149.00 · 1 item
streaming...
Free