D
Drillbench
Learn any tech by doing — a desktop drill & notebook workbench.
About
A Windows desktop workbench for learning technology by doing. It began as a PySpark-only trainer (real local Spark, drills with hidden tests, an embedded Spark UI) and grew into a universal drillbench: workspaces for any subject — Kafka, Terraform, Kubernetes, Snowflake, cloud certifications, even math — with polyglot runnable notebooks on a live Python kernel and an AI coach that turns any pasted question into a richly-explained study notebook. Ships with a demo profile of 160 real study notebooks. Desktop app — use the site's Download button (no hosted version).