# SDKs

> A curated index of services, tooling, and open source solutions for generating API SDKs, client libraries, and code from API specifications. This collection covers SDK generation platforms, open source code generators, RPC frameworks, and schema-driven toolchains across the SDK lifecycle stop.

This is the **SDKs** topic area of [API Evangelist](https://apievangelist.com) — a network of focused knowledge bases drawn from 16 years of independent API research by Kin Lane. Browse all areas at https://apievangelist.com/areas/.

## Services & Tools
- [APIMatic](https://providers.apis.io/providers/apimatic/) (repo: https://github.com/api-evangelist/apimatic)
- [Apollo](https://providers.apis.io/providers/apollo/) (repo: https://github.com/api-evangelist/apollo)
- [Apache Thrift](https://providers.apis.io/providers/thrift/) (repo: https://github.com/api-evangelist/thrift)
- [AutoRest](https://providers.apis.io/providers/autorest/) (repo: https://github.com/api-evangelist/autorest)
- [Buf](https://providers.apis.io/providers/buf/) (repo: https://github.com/api-evangelist/buf)
- [Cap'n Proto](https://providers.apis.io/providers/capn-proto/) (repo: https://github.com/api-evangelist/capn-proto)
- [Connect-RPC](https://providers.apis.io/providers/connect-rpc/) (repo: https://github.com/api-evangelist/connect-rpc)
- [Feign](https://providers.apis.io/providers/feign/) (repo: https://github.com/api-evangelist/feign)
- [Fern](https://providers.apis.io/providers/fern/) (repo: https://github.com/api-evangelist/fern)
- [Genql](https://providers.apis.io/providers/genql/) (repo: https://github.com/api-evangelist/genql)
- [GraphQL Code Generator](https://providers.apis.io/providers/graphql-codegen/) (repo: https://github.com/api-evangelist/graphql-codegen)
- [gRPC](https://providers.apis.io/providers/grpc/) (repo: https://github.com/api-evangelist/grpc)
- [Hey API](https://providers.apis.io/providers/hey-api/) (repo: https://github.com/api-evangelist/hey-api)
- [Kiota](https://providers.apis.io/providers/kiota/) (repo: https://github.com/api-evangelist/kiota)
- [Konfig](https://providers.apis.io/providers/konfig/) (repo: https://github.com/api-evangelist/konfig)
- [Liblab](https://providers.apis.io/providers/liblab/) (repo: https://github.com/api-evangelist/liblab)
- [NSwag](https://providers.apis.io/providers/nswag/) (repo: https://github.com/api-evangelist/nswag)
- [oapi-codegen](https://providers.apis.io/providers/oapi-codegen/) (repo: https://github.com/api-evangelist/oapi-codegen)
- [Ogen](https://providers.apis.io/providers/ogen/) (repo: https://github.com/api-evangelist/ogen)
- [OpenAPI Generator](https://providers.apis.io/providers/openapi-generator/) (repo: https://github.com/api-evangelist/openapi-generator)
- [OpenAPI TypeScript Codegen](https://providers.apis.io/providers/openapi-typescript-codegen/) (repo: https://github.com/api-evangelist/openapi-typescript-codegen)
- [Orval](https://providers.apis.io/providers/orval/) (repo: https://github.com/api-evangelist/orval)
- [Protocol Buffers](https://providers.apis.io/providers/protobuf/) (repo: https://github.com/api-evangelist/protobuf)
- [Refitter](https://providers.apis.io/providers/refitter/) (repo: https://github.com/api-evangelist/refitter)
- [Relay Compiler](https://providers.apis.io/providers/relay-compiler/) (repo: https://github.com/api-evangelist/relay-compiler)
- [RestSharp](https://providers.apis.io/providers/restsharp/) (repo: https://github.com/api-evangelist/restsharp)
- [Retrofit](https://providers.apis.io/providers/retrofit/) (repo: https://github.com/api-evangelist/retrofit)
- [Sideko](https://providers.apis.io/providers/sideko/) (repo: https://github.com/api-evangelist/sideko)
- [Smithy](https://providers.apis.io/providers/smithy/) (repo: https://github.com/api-evangelist/smithy)
- [Speakeasy](https://providers.apis.io/providers/speakeasy/) (repo: https://github.com/api-evangelist/speakeasy)
- [Stainless](https://providers.apis.io/providers/stainless/) (repo: https://github.com/api-evangelist/stainless)
- [Swagger Codegen](https://providers.apis.io/providers/swagger-codegen/) (repo: https://github.com/api-evangelist/swagger-codegen)
- [tRPC](https://providers.apis.io/providers/trpc/) (repo: https://github.com/api-evangelist/trpc)
- [Twirp](https://providers.apis.io/providers/twirp/) (repo: https://github.com/api-evangelist/twirp)

## Related Areas
- [Clients](https://clients.apievangelist.com): This is the index of API client, HTTP client, and API consumer tools repos being tracked by the API Evangelist networ...
- [IDE](https://ide.apievangelist.com): An index and topic collection covering integrated development environments (IDEs), code editors, and cloud workspaces...
- [API Clients](https://api-clients.apievangelist.com): An index and topic collection covering API clients, the developer tools used to inspect, debug, exercise, and documen...
- [Command Line Interface](https://cli.apievangelist.com): A curated index of services, tooling, and open source solutions for API command line interfaces, HTTP clients, and te...
- [Encryption](https://encryption.apievangelist.com): An index and topic collection covering encryption services, key management systems (KMS), hardware security modules (...

## More
- [Latest SDKs stories](/stories/)
- [All API Evangelist topic areas](https://apievangelist.com/areas/)
- [API Evangelist network index (llms.txt)](https://apievangelist.com/llms.txt)