Altair GraphQL Client vs Ariadne

Altair GraphQL Client is an IDE for running and debugging GraphQL queries, mutations and subscriptions. It formats queries, supports file uploads using the multipart specification, and can export query collections. Users can set environment variables for endpoints, headers and queries, then browse schema types and operations in a documentation explorer. Pre-request and post-request scripts and an extensible plugin system add customization options. Altair GraphQL Cloud provides centralized query management, collections, query versioning and shareable query URLs. Official integration packages include Express middleware, Koa middleware, a static build and a Gatsby plugin. The free Basic plan lists up to two team members and 20 queries; Pro costs $7.99 a month per user and lists unlimited team members, teams and queries. The client is available as a web app and on desktop platforms, including Linux, macOS and Windows, with extension and self-hosted options. The maker says the web app is for quick or one-time use, not full development, because it has limitations. Documentation warns that introspection can expose an API schema and that Content Security Policy support is beta.

Ariadne is an open-source Python library for building GraphQL APIs with a schema-first design. Developers describe an API using GraphQL Schema Definition Language and connect schema fields to application logic with resolver functions. The server supports asynchronous and synchronous query execution and can be served through WSGI or ASGI apps. The project describes interoperability with web frameworks and includes a Django integration example. Ariadne Codegen creates a typed Python client and Pydantic models from a GraphQL schema and operations; generated client results are validated against those models at runtime. An optional SQLAlchemy 2.0 integration supports synchronous sessions in WSGI and ASGI, while AsyncSession is limited to ASGI and has a documented limitation involving sibling root fields. Ariadne implements the GraphQL multipart request specification for uploads. Its default Upload scalar is write-only and supports values passed through variables. Security documentation discusses denial-of-service and credential-leakage risks and gives mitigation guidance. Ariadne is self-hosted and free, and the site lists Linux, web, and API platforms.