Altair GraphQL Client

Automated transcription of database schemas into GraphQL schemas, resolvers, queries, and mutations

Rich editor support for GraphQL client and server development that seamlessly integrates with the Apollo platform

Select "GraphQL" at the top, explore the GraphQL AST and highlight different parts by clicking in the query.

StackHawk

Query public API's schemas (e.g. Reddit, Twitter, Github, etc) using GraphiQL

An ESLint plugin that checks your GraphQL strings against a schema.