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Nextjournal
Nextjournal · Berlin, Germany · founded 2015
What it is
Nextjournal is a notebook service for reproducible and data-driven research, available on the web or as a self-hosted option. A notebook can run multiple languages, with values exchanged between runtimes through files; supported languages include Python, R, Julia, Clojure, Bash, JavaScript, and ClojureScript. Users can edit notebooks together in real time, and automatic versioning saves data and the runtime environment so earlier changes can be restored. Each running notebook gets a compute instance that shuts down when computation ends. GPU support is listed, including up to eight NVIDIA Tesla K80, P100, or P100 Workstation GPUs per runtime. Notebooks can connect to 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 restricted to group members. The free plan has limited concurrent compute under a fair-use policy. Paid plans start at $299/mo, and a 14-day trial is listed.
For and against
For
- Supports multiple language runtimes in one notebook.
- Collaborative real-time editing and restorable version history.
- Can connect to S3 and Google Cloud Storage.
- Published notebooks have permanent URLs.
- GPU support is listed.
Against
- Free plan has limited concurrent compute resources.
- Free compute is subject to a fair-use policy.
- Team plan starts at $299/mo.
The verdict
Nextjournal combines multi-language notebooks, collaborative editing, saved runtime environments, and publishing. The free plan is available, while paid plans start at $299/mo and include a 14-day trial.
Who it suits
It suits researchers, data scientists, professors, scientists, and library authors who need reproducible notebooks or collaboration across languages. Its self-hosted option may also suit teams seeking that deployment model.
Plans and prices
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
Additional editors $99/month each · Unlimited concurrent compute · High-performance compute · Scheduled notebook runs
Read 30 Sep 2026 · nextjournal.com
Enterprise
Additional editors $125/month each · Hosted or on-prem (AWS, Google Cloud) · Single Sign-On · Priority Slack support
Read 30 Sep 2026 · nextjournal.com
On the record
- Audience
- The homepage describes use cases for machine-learning researchers, data scientists, library authors, professors, and scientists.nextjournal.com · read 30 Sep 2026
- Collaboration
- Users can edit notebooks together in real time and create public or private groups.nextjournal.com · read 30 Sep 2026
- Company history
- The About page says the team entered an exploration phase in 2015 and created Nextjournal after exploring reproducibility and scientific tooling.nextjournal.com · read 30 Sep 2026
- Compute
- The service provisions a compute instance for each running notebook and shuts it down automatically when computation is done.nextjournal.com · read 30 Sep 2026
- 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.nextjournal.com · read 30 Sep 2026
- GPU support
- The homepage states support for up to 8 NVIDIA Tesla K80, P100, or P100 Workstation GPUs per runtime.nextjournal.com · read 30 Sep 2026
- HIPAA
- The pricing FAQ says HIPAA guideline compliance may be possible with the on-prem solution and gives AWS reference architecture as an example.nextjournal.com · read 30 Sep 2026
- Import and export
- Nextjournal supports importing Jupyter, IPython, RMarkdown, and Markdown notebooks and exporting notebooks to Markdown.nextjournal.com · read 30 Sep 2026
- Integrations
- Notebooks can access Amazon S3 and Google Cloud Storage, clone private GitHub repositories, and import images from Docker Hub.nextjournal.com · read 30 Sep 2026
- Polyglot notebooks
- A notebook can use multiple programming-language runtimes, with values exchanged between runtimes using files.nextjournal.com · read 30 Sep 2026
- 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.nextjournal.com · read 30 Sep 2026
- Purpose
- Nextjournal describes itself as a notebook for reproducible research and data-driven research.nextjournal.com · read 30 Sep 2026
- Secrets
- Secrets are stored outside notebooks and computational environments in Vault and can only be read by the user's profile.nextjournal.com · read 30 Sep 2026
- Paid from
- 299nextjournal.com · read 20 Sep 2026
- Support
- Enterprise priority support is provided through a team-to-team Slack channel, with responses within 24 hours during the week.nextjournal.com · read 30 Sep 2026
- Versioning
- Changes are saved automatically, including data and the full runtime environment, and previous changes can be restored.nextjournal.com · read 30 Sep 2026
