Repositories list

• wire

  Public
  gRPC and protocol buffers for Android, Kotlin, Swift and Java.

  Kotlin

  •

  Apache License 2.0

  •594•4.4k•152•20•Updated Jan 7, 2026Jan 7, 2026

• retrofit

  Public
  A type-safe HTTP client for Android and the JVM

  androidjava

  HTML

  •

  Apache License 2.0

  •7.4k•44k•127•35•Updated Jan 7, 2026Jan 7, 2026

• invert

  Public

  square/invert’s past year of commit activity
  🔃 Inverted view of your Project

  Kotlin

  •

  Apache License 2.0

  •3•128•15•2•Updated Jan 6, 2026Jan 6, 2026

• okhttp

  Public

  square/okhttp’s past year of commit activity
  Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

  androidkotlinjava+ 1graalvm

  Kotlin

  •

  Apache License 2.0

  •9.3k•47k•62•26•Updated Jan 6, 2026Jan 6, 2026

• web-sdk

  Public

  square/web-sdk’s past year of commit activity
  Square Web SDK

  javascripttypescript

  TypeScript

  •

  Apache License 2.0

  •14•22•1•2•Updated Jan 6, 2026Jan 6, 2026

• exit

  Public

  square/exit’s past year of commit activity
  Semantic exit codes inspired by HTTP status codes

  Go

  •

  Apache License 2.0

  •3•29•0•0•Updated Jan 5, 2026Jan 5, 2026

• square-python-sdk

  Public
  Python client library for the Square API

  apiecommercesdk+ 4api-clientpython-sdkpayment-processingcredit-card-payments

  Python

  •

  MIT License

  •51•109•1•4•Updated Jan 5, 2026Jan 5, 2026

• square-java-sdk

  Public
  Java client library for the Square API

  sdkapi-client

  Java

  •

  MIT License

  •35•65•0•3•Updated Jan 5, 2026Jan 5, 2026

• square-nodejs-sdk

  Public
  Typescript client library for the Square API

  nodejstypescriptsquare+ 2generated-from-openapibuilt-with-fern

  TypeScript

  •

  MIT License

  •45•104•1•5•Updated Jan 5, 2026Jan 5, 2026

• square-php-sdk

  Public
  PHP client library for the Square API

  sdk

  PHP

  •

  MIT License

  •55•76•1•4•Updated Jan 5, 2026Jan 5, 2026

• leakcanary

  Public

  square/leakcanary’s past year of commit activity
  A memory leak detection library for Android.

  androidkotlinjava+ 7kotlin-androidmemory-leakleakcanaryoutofmemoryoutofmemoryerrorleak-canaryleak-trace

  Kotlin

  •

  Apache License 2.0

  •4k•30k•136•10•Updated Jan 5, 2026Jan 5, 2026

• kotlinpoet

  Public
  A Kotlin API for generating .kt source files.

  kotlincode-generationjavapoet

  Kotlin

  •

  Apache License 2.0

  •306•4.1k•63•15•Updated Jan 5, 2026Jan 5, 2026

• moshi

  Public
  A modern JSON library for Kotlin and Java.

  Kotlin

  •

  Apache License 2.0

  •795•10k•92•4•Updated Jan 5, 2026Jan 5, 2026

• pyfu-usb

  Public
  Python USB firmware update library

  Python

  •

  MIT License

  •11•27•0•0•Updated Jan 3, 2026Jan 3, 2026

• affected-paths

  Public
  Tool to find affected Gradle projects given the diff between commits

  Kotlin

  •

  Apache License 2.0

  •5•67•2•2•Updated Jan 2, 2026Jan 2, 2026

• square-mcp-server

  Public
  A Model Context Protocol (MCP) server for square

  TypeScript

  •

  Apache License 2.0

  •17•90•0•7•Updated Jan 1, 2026Jan 1, 2026

• workflow-kotlin

  Public

  square/workflow-kotlin’s past year of commit activity
  A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.

  androidkotlinworkflow+ 3reactiveuistate-machine

  Kotlin

  •

  Apache License 2.0

  •111•1.1k•142•30•Updated Dec 31, 2025Dec 31, 2025

• exoskeleton

  Public
  Go

  •

  Apache License 2.0

  •0•5•1•1•Updated Dec 30, 2025Dec 30, 2025

• zstd-kmp

  Public
  Zstandard compression for Kotlin Multiplatform

  C++

  •

  Apache License 2.0

  •5•101•5•0•Updated Dec 30, 2025Dec 30, 2025

• okio

  Public
  A modern I/O library for Android, Java, and Kotlin Multiplatform.

  kotlinkotlin-multiplatform

  Kotlin

  •

  Apache License 2.0

  •1.2k•9k•90•15•Updated Dec 30, 2025Dec 30, 2025

• Blueprint

  Public
  Declarative UI construction for iOS, written in Swift

  swiftuiuikit+ 3declarativesquaredeclarative-ui

  Swift

  •

  Apache License 2.0

  •48•703•10•10•Updated Dec 24, 2025Dec 24, 2025

• certigo

  Public
  A utility to examine and validate certificates in a variety of formats

  tlsclissl+ 9command-line-appcryptocertificatepkcs7x509keystorepem+ 2

  Go

  •

  Apache License 2.0

  •70•1k•20•13•Updated Dec 23, 2025Dec 23, 2025

• mobile-payments-sdk-ios

  Public
  Public repository that hosts the Square Mobile Payments SDK iOS binaries

  iosmobilesdk+ 1payments

  Swift

  •

  Other

  •6•12•0•1•Updated Dec 18, 2025Dec 18, 2025

• mobile-payments-sdk-android

  Public
  Public repository that host the Square Mobile Payments SDK Android tech refs and example app.

  Kotlin

  •4•7•0•0•Updated Dec 18, 2025Dec 18, 2025

• workflow-swift

  Public
  A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.

  swiftiosworkflow+ 2reactivestate-machine

  Swift

  •

  Apache License 2.0

  •46•360•20•14•Updated Dec 18, 2025Dec 18, 2025

• wire-grpc-server

  Public

  square/wire-grpc-server’s past year of commit activity
  Compatibility classes to make wire-generated services work with gRPC server.

  Kotlin

  •

  Apache License 2.0

  •3•4•4•2•Updated Dec 18, 2025Dec 18, 2025

• mobile-payments-sdk-react-native

  Public

  square/mobile-payments-sdk-react-native’s past year of commit activity
  Mobile Payments SDK React Native Plug-in

  Swift

  •

  Apache License 2.0

  •7•11•5•9•Updated Dec 18, 2025Dec 18, 2025

• square-dotnet-sdk

  Public
  .NET client library for the Square API

  sdkapi-client

  C#

  •

  MIT License

  •31•70•1•1•Updated Dec 17, 2025Dec 17, 2025

• web-payments-quickstart

  Public
  Quickstart for using Square's Web Payments SDK

  HTML

  •

  Apache License 2.0

  •144•102•0•2•Updated Dec 15, 2025Dec 15, 2025

• square-ruby-sdk

  Public
  Ruby client library for the Square API

  apiecommercesdk+ 4api-clientpayment-processingsdk-rubycredit-card-payments

  Ruby

  •

  MIT License

  •45•76•0•1•Updated Dec 15, 2025Dec 15, 2025