The New Stack
6/29/2026

JetBrains kills Kotlin Notebook months after Microsoft’s Polyglot exit. But Jupyter is doing just fine.
Short summary
JetBrains discontinues Kotlin Notebook as the notebook market consolidates around Jupyter, following Microsoft's Polyglot exit. This reflects a broader trend where open-source solutions dominate over proprietary alternatives in developer tools. Jupyter's position strengthens despite competitive product closures.
- •JetBrains is sunsetting Kotlin Notebook
- •Follows Microsoft's Polyglot discontinuation
- •Jupyter emerges as dominant open-source standard
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