Altair GraphQL Client vs Optic

Altair GraphQL Client is an open-source GraphQL IDE for sending queries, mutations, and subscriptions to GraphQL APIs. It provides features like query autocompletion, schema documentation browsing, environment variables, and request collections. The client is available as a desktop application, browser extension, and web app.

Optic is API linting and diff tool that catches breaking changes and enforces API design standards in CI.. It is available under a freemium model. This tool falls under the api tools category.