ApiNotes vs Theneo

ApiNotes turns OpenAPI and Swagger specifications into hosted interactive documentation and a changelog that alerts teams to breaking changes. It accepts OpenAPI 3.0, 3.1, and 3.2, plus Swagger 2.0, in YAML or JSON. Generated references show endpoint parameters, response schemas, code samples in more than 10 programming languages, and a Try-It-Now console. Users can paste, upload, or link a specification and publish documentation at an ApiNotes subdomain. A GitHub Action can publish an updated specification on merge, while the Team plan lists pull request comments about breaking changes. Starter is free and limited to one public API, the last 10 changelog releases, 25 subscribers, and one team member. Team costs $19 a month and includes five APIs, private docs, full changelog history, unlimited subscribers, a custom domain, and five team members. The Team plan has a 14-day trial with no credit card required. Additional APIs are listed at £5/API; Postman, Bruno, and Insomnia integrations are marked as coming soon.

Theneo is a developer portal for publishing API references, guides, changelogs, and customer-specific private portals. It creates interactive API documentation from OpenAPI files, Postman collections, or Git connections, with code samples, live testing, and CI/CD sync. Supported formats include REST, AsyncAPI, SOAP, GraphQL, and gRPC. Teams can co-edit, comment, review changes, track versions, and roll back. AI tools include documentation generation, Ask AI answers, release summaries, MCP, and llms.txt support. Private portals can control API visibility by customer and include SSO options and custom branding. Integrations include GitHub and Bitbucket sync, a VS Code extension, Postman sync, CLI, SDK, and API access. Theneo lists SOC 2 Type II, ISO 27001, and ISO 9001 certifications and GDPR compliance; it describes AES-256 encryption at rest, TLS 1.2 or later in transit, and seven-day point-in-time backups. A free plan is available; Business starts at $120/month billed annually. Enterprise includes self-hosting on AWS, Azure, Google Cloud, or on-premises Kubernetes.