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SPECIFICTION
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Fern vs Redocly

Fern

buildwithfern.com

Redocly

redocly.com

Side by side

FigureFernRedocly
Price fromFree$10/mo
Free planYes—
Free trial—Yes
Open sourceYes—
WebYesYes
WindowsYes—
macOSYes—
LinuxYes—
APIYesYes
Self-hostedYes—
Plans published24
Spec score · API Documentation Tools8.9 (#1)8.3 (#6)
Spec score · Technical Documentation Software8.8 (#3)8.1 (#17)
Spec score · Knowledge base software8.8 (#17)8.6 (#30)
Spec score · Technical Writing Platforms8.8 (#4)8.2 (#12)
Spec score · Api 18.9 (#4)8.3 (#8)
Spec score · Developer Documentation Software8.7 (#5)8.3 (#8)
Spec score · Api Docs8.8 (#5)8.4 (#7)
Spec score · AI Documentation Generators8.7 (#8)8.2 (#16)
Access controlFern supports documentation access through password protection, SSO, JWT, or OAuth, with role-based access control.Enterprise and Enterprise+ plans include SSO, which supports SAML 2 or OpenID Connect identity providers.
API referencesFern generates interactive API references from OpenAPI, AsyncAPI, gRPC, GraphQL, OpenRPC, and related specifications.Redoc generates API reference documentation from OpenAPI definitions and supports automatic code samples, mock servers, and interactive API testing with Replay.
Publishing audiencebothRedocly describes its product as serving developers, executives, product managers, and technical writers.
ComplianceFern's trust center lists SOC 2 Type II, GDPR, and CCPA, with a SOC 2 report and penetration-test summary available by request.Redocly says it completed a SOC 2 Type II audit and offers a Data Processing Addendum for GDPR, CCPA, and other privacy regulations.
Content analyticsYesYes
Custom domainYesYes
Free planYesNo
SecurityFern's trust center lists SOC 2 Type II, GDPR, and CCPA and provides access requests for its SOC 2 report, penetration test summary, and information security policy.Redocly says data in transit is protected with TLS 1.2+ and data at rest is encrypted with AES-256.
SSO supportYesYes

Plans

Fern

  • FreeFree
  • EnterprisePriced on request

Fern pricing →

Redocly

  • Pro$10 a month
  • Enterprise$24 a month
  • Respect Monitoring$101 a month
  • Enterprise+Priced on request

Redocly pricing →

In their own words

Fern

Fern has no write-up on Specifiction yet; its figures are above.

Visit buildwithfern.com

Redocly

Redocly is an API documentation and governance suite for teams creating, maintaining, and monitoring API experiences. Redoc generates reference documentation from OpenAPI definitions, with automatic code samples, mock servers, and interactive testing through Replay. Reunite supports collaborative editing, visual reviews, remote content, and deployment previews with an audit trail; it connects to GitHub, GitLab, Azure DevOps, or Redocly’s native Git solution. The open-source CLI validates, lints, and bundles OpenAPI definitions, while the VS Code extension helps write and maintain them and flags definition errors. Reef provides a searchable internal API catalog with metadata, scorecards, and discovery features. Respect monitors APIs against an OpenAPI specification and can send alerts through Slack or email. Redocly lists web, API, and extension platforms, custom domains, and content analytics. It says data is encrypted in transit and at rest and reports a completed SOC 2 Type II audit. Pro costs $10.00 per seat/month, billed monthly, and includes one project and 100 pages. API docs can be launched for free, and the full suite has a 30-day trial.

Visit redocly.com