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ReviewNB
What ReviewNB is
ReviewNB is a notebook review tool for Jupyter pull requests. It shows changes to notebook code, Markdown, and rendered outputs in readable diffs, while comments attach to individual cells. Reviewers can track whether discussions are resolved and receive email notifications. Integrations cover GitHub Cloud, GitHub Enterprise Server, and Bitbucket Cloud; GitLab is not supported because of an API limitation. The service is available on the web, as an optional Chrome extension, or through self-hosting. GitHub users can enable access per repository, while Bitbucket access covers all repositories. ReviewNB says it fetches repository contents on demand rather than storing them. Pull-request comments go to the code host, while standalone-notebook comments remain with ReviewNB. Plans include Free, Team at $79 a month, Business at $249 a month, and Enterprise or Self-Hosting options with unlisted prices.
Who it suits
ReviewNB suits teams reviewing Jupyter notebooks in GitHub or Bitbucket workflows. Self-hosting and repository controls also suit organizations with specific deployment or access requirements.
What it does well
- Cell-level notebook comments
- Readable code and output diffs
- GitHub and Bitbucket integrations
- Web, extension, and self-hosted options
- Free plan available
What to know first
- GitLab is not supported
- Team starts at $79 a month
- Enterprise and Self-Hosting prices unlisted
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 10 free PRs after the trial · Academic use free forever · Open-source use free forever | Free |
| Business | per month · Up to 30 users · Unlimited private repositories · Unlimited public repositories · 14-day free trial | $249 a month |
| Team | per month · Up to 10 users · Unlimited private repositories · Unlimited public repositories · 14-day free trial | $79 a month |
| Enterprise | Plans for 30+ users · Unlimited private and public repositories · Priority support · ACH invoicing · Custom ToS | On request |
| Self-Hosting | Secure self-hosted installation · Priority support · Simple Docker distribution · Works with GitHub Enterprise/Cloud | On request |
As reviewnb.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
ReviewNB focuses on notebook-specific diffs and discussions rather than ordinary code review alone. Its integrations, self-hosted option, and free tier give teams several deployment and pricing paths.
Facts from ReviewNB's own pages
- Browser extension
- An optional Chrome extension is available for smoother GitHub integration. · reviewnb.com, 11 Oct 2026
- Comments
- Pull request comments are posted to GitHub or Bitbucket, while comments on standalone notebooks are stored with ReviewNB. · reviewnb.com, 11 Oct 2026
- Company
- ReviewNB describes itself as a bootstrapped company based in India that has been building the product since 2018. · reviewnb.com, 11 Oct 2026
- Data handling
- ReviewNB says it does not store repository contents and fetches them from GitHub or Bitbucket on demand. · reviewnb.com, 11 Oct 2026
- Diffs
- It displays changes to notebook code, Markdown, and rendered outputs in a readable diff. · reviewnb.com, 11 Oct 2026
- Discussions
- Reviewers can comment on specific notebook cells, track resolution status, and receive email notifications. · reviewnb.com, 11 Oct 2026
- Founded
- 2018 · reviewnb.com, 28 Sept 2026
- GitLab
- GitLab is not supported because of a GitLab API limitation. · reviewnb.com, 11 Oct 2026
- Headquarters
- India · reviewnb.com, 28 Sept 2026
- Integrations
- ReviewNB supports GitHub Enterprise Server, GitHub cloud, and Bitbucket cloud. · reviewnb.com, 11 Oct 2026
- Purpose
- ReviewNB provides rich diffs and cell-level comments for reviewing Jupyter notebook pull requests. · reviewnb.com, 11 Oct 2026
- Repository access
- On GitHub, users can enable or disable access to individual repositories; on Bitbucket, ReviewNB gets access to all repositories. · reviewnb.com, 11 Oct 2026
- Self-hosted security
- The self-hosted application runs on the customer's servers and does not call back to ReviewNB infrastructure. · docs.reviewnb.com, 11 Oct 2026
- Support
- The Enterprise plan lists priority support, and the site provides [email protected] for contact. · reviewnb.com, 11 Oct 2026
- Token security
- Access tokens are stored with AES encryption, and ReviewNB generates a new token when a user logs out and back in; Bitbucket tokens expire in one hour. · reviewnb.com, 11 Oct 2026
Where ReviewNB stands on Freedom251
- Code review software#30 of 51