Swift Server Workgroup (SSWG)

The Swift Server workgroup is a steering team that promotes the use of Swift for developing and deploying server applications. The Swift Server workgroup will:

Analogous to the Core Team for Swift, the workgroup is responsible for providing overall technical direction and establishing the standards by which libraries and tools are proposed, developed and eventually recommended. Membership of the workgroup is contribution-based and is expected to evolve over time.

The current Swift Server workgroup consists of the following people:

With Tom Doron (@tomerd, Apple) representing the Swift core team.


The Swift Server workgroup uses the Swift Server forum for general discussion.

Community Participation

Everyone is welcome to contribute in the following ways:

These conversations will take place on the Swift Server forum. Over time, the workgroup may form smaller working groups to focus on specific technology areas.


The main goal of the Swift Server workgroup is to eventually recommend libraries and tools for server application development with Swift. The difference between this workgroup and the Swift Evolution process is that server-oriented libraries and tools that are produced as a result of workgroup efforts will exist outside of the Swift language project itself. The workgroup will work to nurture, mature and recommend projects as they move into their development and release stages.


In various situations the SSWG shall hold a vote. These votes can happen on the phone, email, or via a voting service, when appropriate. SSWG members can either respond “agree, yes, +1”, “disagree, no, -1”, or “abstain”. A vote passes with two-thirds vote of votes cast based on the SSWG charter. An abstain vote equals not voting at all.

Incubation Process

The Swift Server Workgroup has a process which allows a project to go through incubation stages until it graduates and becomes a recommended project.


Project Description Maturity Level Pitched Accepted
SwiftNIO Event-driven network application framework. Graduated N/A 9/7/2018
SwiftLog Logging API Graduated 9/10/2018 2/7/2019
SwiftMetrics Metrics API Graduated 1/8/2019 4/4/2019
PostgresNIO PostgreSQL driver Incubating 11/18/2018 5/16/2019
RediStack Redis driver Sandbox 1/7/2019 6/27/2019
AsyncHTTPClient HTTP client Graduated 4/18/2019 6/27/2019
APNSwift APNS client Incubating 2/5/2019 6/27/2019
SwiftStatsdClient StatsD driver for the metrics API Incubating 6/2/2019 8/11/2019
SwiftPrometheus Prometheus driver for the metrics API Sandbox 11/18/2018 8/11/2019
gRPC Swift gRPC client & server framework Graduated 9/30/2019 2/19/2020
Swift Crypto Open-source implementation of a substantial portion of the API of Apple CryptoKit Incubating 2/20/2020 3/4/2020
OpenAPIKit OpenAPI client Sandbox 1/14/2020 4/29/2020
MongoSwift MongoDB driver Incubating 10/30/2019 5/13/2020
Swift AWS Lambda Runtime Runtime library for AWS Lambda functions in Swift Sandbox N/A 6/24/2020
Backtrace Nice backtraces in production Incubating 5/30/19 7/29/2020
Service Lifecycle Lifecycle management Incubating N/A 9/2/2020
Soto for AWS Third-party SDK for AWS Incubating 10/1/2020 11/12/2020
MultipartKit Multipart parser and serializer with Codable support for Multipart Form Data Incubating 3/3/2021 11/11/2021
MQTT NIO A Swift NIO MQTT v3.1.1 and v5.0 Client Sandbox 11/2/2021 1/19/2022
GraphQL GraphQL query language implementation Incubating 8/22/2022 9/15/2022
Graphiti Library for building GraphQL schemas Incubating 8/22/2022 9/15/2022

The SSWG publishes a package collection that contains the projects incubated by the workgroup. The collection is available at https://swiftserver.group/collection/sswg.json.

Meeting Time

The SSWG meets biweekly on Wednesday at 2:00PM PT (USA Pacific). The meetings take place in the weeks with the odd week numbers.