Introduction

Zasper is an open-source, high-performance IDE for working with Jupyter notebooks. It’s built from scratch to be:

• Fast to start and fast to run
• Highly concurrent, with a small resource footprint
• Resilient under heavy load

It is cross-platform:

• Fully supported: macOS and Linux
• Limited support: Windows — for the best experience, use via WSL

Benchmarks

How is Zasper better than JupyterLab?

• Up to 5X less CPU usage
• Up to 40X less RAM usage
• Higher throughput
• Lower latency
• Highly resilient under very high loads

The full benchmark report, methodology and raw results are in the zasper-benchmark repository.

Screenshots

Editor

Terminal

Launcher

Jupyter Notebook

Version Control

Command Palette

Dark Mode