type-graphql is a powerful library for building GraphQL APIs using TypeScript and decorators. It allows developers to define GraphQL schemas using TypeScript classes and decorators, providing a type-safe and intuitive way to create GraphQL resolvers and types. While type-graphql offers a robust solution for building GraphQL APIs, there are several alternatives in the ecosystem that cater to different needs. Here are a few notable options:

• apollo-server-express is a popular library that integrates Apollo Server with Express.js, allowing you to build a GraphQL API with ease. It provides a comprehensive set of features, including support for middleware, subscriptions, and caching. If you are already using Express.js in your application and want a powerful GraphQL server with a rich ecosystem, apollo-server-express is an excellent choice.
• graphql-modules is a library that helps you organize your GraphQL schema into modules, promoting better separation of concerns and modularity in your codebase. It allows you to define resolvers, types, and schemas in a modular fashion, making it easier to manage large GraphQL applications. If you are working on a large-scale project and want to keep your code organized and maintainable, graphql-modules is a great option.
• graphql-tools is a set of utilities for building and manipulating GraphQL schemas. It provides functions for merging schemas, creating type definitions, and adding resolvers. If you need flexibility in constructing your GraphQL schema and want to leverage existing schemas or combine multiple schemas, graphql-tools is a valuable tool in your toolkit.
• nexus is a code-first GraphQL schema construction library that allows you to define your GraphQL schema using a fluent API. It emphasizes type safety and developer experience, making it easy to build and maintain GraphQL APIs. If you prefer a more programmatic approach to defining your GraphQL schema while still leveraging TypeScript, nexus is worth considering.

To explore how these packages compare, check out the comparison: Comparing apollo-server-express vs graphql-modules vs graphql-tools vs nexus vs type-graphql.