Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

ReadMe (Developer Tools): ReadMe is a developer-friendly API documentation platform for building docs loved by developers and understood by AI. Pricing: from from $0/mo. (data verified July 2026)
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ReadMe is a full-stack documentation platform that helps you create, host, and maintain beautiful API docs. It solves the problem of scattered, hard-to-navigate documentation by providing a unified workspace with built-in AI assistance, interactive API references, and version control. ReadMe is ideal for developer-facing teams at companies of all sizes—from startups to enterprises like NVIDIA, Amazon, and PagerDuty. It is not a general-purpose wiki or a no-code tool for non-technical content.
ReadMe is built for product teams, developer experience (DX) leads, and technical writers who want to turn API docs into a product developers actually use. Use cases include publishing an interactive API reference from an OpenAPI spec, writing step-by-step guides and recipes, maintaining a changelog, and adding AI-powered search so users can ask questions in plain English. ReadMe also supports branching and reviews for team workflows, plus bi-directional sync with GitHub and GitLab.
ReadMe offers a WYSIWYG editor, customizable themes, reusable content blocks, and MDX support for interactive docs. Its AI features—such as Agent, Owlbert, Linter, and Ask AI—help you write, review, and improve documentation faster. Enterprise customers get SSO, audit logs, role-based access, and dedicated support. The platform also includes developer dashboard metrics, an API explorer, and integrations with tools like Intercom, Zendesk, Segment, and Slack.
Editorial score from our review methodology — not user ratings.
ReadMe pricing: from $0/mo.
Free for everyone. Includes 1 project, custom domain, bi-directional sync, interactive API reference, usage metrics, markdown editor, customizable themes, and AI features (AI Dropdown, LLMs.txt, MCP Server). Ask AI add-on: $150/month.
All Starter features, plus: invite teammates, branching and reviews, notifications, private docs, landing page, changelog, recipes & forums, custom MDX components, reusable content, CSS/HTML, and AI features (Ask AI Lite, Agent, Owlbert, AI Linter, GitHub AI Writer). Ask AI add-on: $150/month. Start free trial available.
All Pro features, plus: multiple combined projects, no ReadMe branding, user roles & access control, branch review permissions, global reusable content library, audit logs, SSO, OAuth, dedicated support, implementation services. AI features include Docs Audit, Private AI Context, Global Lint Rules.
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