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Nextjournal

nextjournal.com

From $299/mo Free plan WebSelf-hosted
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Spec score 8.3 #44 of 138 in Coding Playgrounds

What it is

Nextjournal is a notebook for reproducible research and data-driven work, available on the web or self-hosted. A notebook can combine programming-language runtimes, with values passed between them through files; listed languages include Python, R, Julia, Clojure, Bash, JavaScript, and ClojureScript. Users can edit together in real time and create public or private groups. Automatic saves preserve changes, data, and the runtime environment, with earlier versions available for restoration. Each running notebook gets a compute instance that shuts down when computation finishes, and a runtime can use up to 8 NVIDIA Tesla K80, P100, or P100 Workstation GPUs. Notebooks can access Amazon S3 and Google Cloud Storage, clone private GitHub repositories, and import Docker Hub images. Import formats include Jupyter, IPython, RMarkdown, and Markdown; notebooks can be exported to Markdown. Published notebooks have permanent URLs and can be public or group-limited; viewers can remix read-only published versions. Plans include Free and paid plans from $299/mo, with a 14-day trial.

Spec sheet

Purpose
Nextjournal describes itself as a notebook for reproducible research and data-driven research.Read 30 Sep 2026 · nextjournal.com
Audience
The homepage describes use cases for machine-learning researchers, data scientists, library authors, professors, and scientists.Read 30 Sep 2026 · nextjournal.com
Free plan
YesRead 20 Sep 2026 · nextjournal.com
Paid from
299Read 20 Sep 2026 · nextjournal.com
Integrations
Notebooks can access Amazon S3 and Google Cloud Storage, clone private GitHub repositories, and import images from Docker Hub.Read 30 Sep 2026 · nextjournal.com
Support
Enterprise priority support is provided through a team-to-team Slack channel, with responses within 24 hours during the week.Read 30 Sep 2026 · nextjournal.com
Headquarters
Berlin, GermanyRead 28 Sep 2026 · nextjournal.com
Collaboration
Users can edit notebooks together in real time and create public or private groups.Read 30 Sep 2026 · nextjournal.com
Company history
The About page says the team entered an exploration phase in 2015 and created Nextjournal after exploring reproducibility and scientific tooling.Read 30 Sep 2026 · nextjournal.com
Compute
The service provisions a compute instance for each running notebook and shuts it down automatically when computation is done.Read 30 Sep 2026 · nextjournal.com
Fair use limit
The free plan has no hard compute-time or resource limits, but Nextjournal reserves the right to cancel computation it deems excessive case by case.Read 30 Sep 2026 · nextjournal.com
GPU support
The homepage states support for up to 8 NVIDIA Tesla K80, P100, or P100 Workstation GPUs per runtime.Read 30 Sep 2026 · nextjournal.com
HIPAA
The pricing FAQ says HIPAA guideline compliance may be possible with the on-prem solution and gives AWS reference architecture as an example.Read 30 Sep 2026 · nextjournal.com
Import and export
Nextjournal supports importing Jupyter, IPython, RMarkdown, and Markdown notebooks and exporting notebooks to Markdown.Read 30 Sep 2026 · nextjournal.com
Polyglot notebooks
A notebook can use multiple programming-language runtimes, with values exchanged between runtimes using files.Read 30 Sep 2026 · nextjournal.com
Publishing
Published notebooks have permanent URLs and can be public or limited to group members; published versions are read-only and can be remixed by viewers.Read 30 Sep 2026 · nextjournal.com
Secrets
Secrets are stored outside notebooks and computational environments in Vault and can only be read by the user's profile.Read 30 Sep 2026 · nextjournal.com
Versioning
Changes are saved automatically, including data and the full runtime environment, and previous changes can be restored.Read 30 Sep 2026 · nextjournal.com

Plans and prices

Free Free Unlimited private notebooks · Data & Secrets Management · Limited concurrent compute resources · Entry level compute resources under Fair Use Policy Read 30 Sep 2026 · nextjournal.com
Team $299 a month starts at $299/month, including 5 editors Additional editors $99/month each · Unlimited concurrent compute · High-performance compute · Scheduled notebook runs · ~$240/month of computational credits · Additional compute billed per use Read 30 Sep 2026 · nextjournal.com
Enterprise $499 a month starts at $499/month, including 5 editors Additional editors $125/month each · Hosted or on-prem (AWS, Google Cloud) · Single Sign-On · Priority Slack support · Dedicated compute · ~$400/month of computational credits · Internal publishing Read 30 Sep 2026 · nextjournal.com

Every Nextjournal plan and price →

Strong points and limits

Strong points

  • Supports multiple languages within one notebook.
  • Collaborators can edit notebooks in real time.
  • Version history preserves data and runtime details.
  • Supports up to 8 listed GPUs per runtime.
  • Imports Jupyter, IPython, RMarkdown, and Markdown.

Limits

  • Free compute resources are limited under fair use.
  • Team starts at $299/month.
  • Additional Team editors cost $99/month each.

Who it suits

It suits machine-learning researchers, data scientists, library authors, professors, and scientists working with reproducible notebooks. Teams needing shared editing, version history, or GPU compute may also find the listed capabilities relevant.

Verdict

Nextjournal combines reproducible notebook environments with collaboration, publishing, and compute features. Its free plan has limited concurrent resources, while paid plans add capacity and team features at listed monthly prices.

Where Specifiction places it

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