sangria

There are some very solid libraries in most languages. I'm not a .NET dev, but I think that HotChocolate takes the cake. Here's a non-exhaustive list: - Kotlin: Netflix's "DGS" (https://github.com/Netflix/dgs-framework) - Python: Strawberry (https://github.com/strawberry-graphql/strawberry) - .NET: HotChocolate (https://github.com/ChilliCream/hotchocolate) - Rust: async-graphql (https://github.com/async-graphql/async-graphql) - Java: GraphQL-Java (https://github.com/graphql-java/graphql-java) - Scala 2: Sangria (https://github.com/sangria-graphql/sangria) - Scala 3: Caliban (https://github.com/ghostdogpr/caliban)

We use Sangria: https://github.com/sangria-graphql/sangria Our usage of Sangria is unusual, though. We use it for parsing and serving GraphQL schemas. We take advantage of their builtin validation logic. Everything else between parsing and having a result to serve back is piped through custom code that translates Sangria's GraphQL AST into Fauna queries.

Generally I would assume an Apollo stack would have an Apollo server [1] or an Apollo client [2] or both. GraphQL on the other hand is just a query language. GraphQL queries are used by Apollo Client to ask for data from a GraphQL endpoint which could be provided by an Apollo Server or some other GraphQL server implementation. By my inspection it seems the only official Apollo Server implementation is in Node.js. By my understanding, you can replace an Apollo Server with any GraphQL server for example Scala's Sangria [3]. So, your Apollo Client can talk to any GraphQL server, and Apollo Client is probably the best and most useful part of an Apollo stack anyways. One good website for figuring out how to use different Apollo stacks is howtographql.com [4] (I am not affiliated with them, but I only like their service.) It has free tutorials