# zasper-io/zasper

High Performace IDE for Jupyter Notebooks

Repository: https://github.com/zasper-io/zasper
Canonical: https://ross.abutalabs.com/products/zasper
Homepage: https://zasper.io
Language: TypeScript
License: AGPL-3.0
License Family: copyleft
Topics: data-science, golang, ide, jupyter, zasper
Last push: 2026-07-13T05:59:53+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 92, release rhythm 40, longevity 52
- inputs: {"age_days": 741, "days_push": 51, "days_rel": 449, "gap_med": 18, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2320, forks 74 (observed 2026-08-28T04:06:37.111580+00:00)

## What it is
Zasper is a high-performance IDE purpose-built for running Jupyter Notebooks, implementing Jupyter's wire protocol with massive concurrency and a minimal memory footprint. It is available as both a desktop app and a web app, supporting all Jupyter kernels including Python, R, Julia, Ruby, Go, and JavaScript.

## Use cases
- run jupyter notebooks in a faster ide
- lightweight alternative to jupyterlab
- ide for data science notebooks
- edit and execute ipynb files with low memory usage
- work with conda environments and jupyter kernels
- run many concurrent notebook kernels efficiently

## When to choose
- you find JupyterLab slow or resource-heavy and want lower CPU/RAM usage
- you need to run many concurrent notebook kernels under heavy load
- you work on macOS or Linux and want a fast, native-feeling notebook IDE
- you want compatibility with all existing Jupyter kernels and conda/UV environments

## When to avoid
- you rely on JupyterLab extensions or a highly customized notebook ecosystem
- you primarily work on native Windows without WSL
- you need a fully mature, battle-tested tool with long-term enterprise support
- you require an AGPL-3.0-unfriendly licensing context

## Facets
- artifact type: application
- maturity: active
- function: editor, gui, developer-tools
- domain: data-science, developer-tools, cross-platform
- platform: windows, go
- tags: jupyter-notebooks, ide, interactive-computing, jupyter-kernels, notebook-editor, data-science-ide, macos, linux, desktop, web-server, typescript

## Member repositories
- zasper-io/zasper (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:37.111580+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:38:50.292694+00:00, confidence not recorded.
  - readme: https://github.com/zasper-io/zasper (fetched 2026-08-28T04:06:37.111580+00:00, sha 75427716bf01)
  - homepage: https://zasper.io (fetched 2026-08-29T10:19:17.738773+00:00, sha b47ad0435482)
  - site_page: https://zasper.io/docs (fetched 2026-08-29T10:19:17.741132+00:00, sha dc5645ba9a55)
- Data as of 2026-08-30T08:39:29.467469+00:00.