Square ORG

Square’s meticulous HTTP client for the JVM, Android, and GraalVM.

OkHttp is a networking library for Java, Kotlin, and Android apps that makes HTTP requests cleaner and faster, with automatic connection pooling, response caching, compression, and modern TLS security built in.

A type-safe HTTP client for Android and the JVM

Java and Android library that turns a typed interface into a working REST API client automatically, describe your endpoints with annotations and Retrofit generates all the networking code.

A memory leak detection library for Android.

LeakCanary is an Android development library that automatically detects memory leaks in your app while you test it, pinpointing exactly which objects are being held in memory unnecessarily so you can fix the cause before shipping.

A powerful image downloading and caching library for Android

A now-deprecated Android library from Square that downloads, caches, and displays remote images in your app with a single line of code, but the team now recommends migrating to Coil for new projects.

A Java API for generating .java source files.

JavaPoet is a deprecated Java library from Square that lets you write code which generates other Java code, automatically handling formatting details like imports, indentation, and semicolons.

A modern JSON library for Kotlin and Java.

Moshi is a JSON library from Square for Android, Java, and Kotlin that converts between JSON text and your app's data objects, with strong support for custom conversion logic and Kotlin null safety.

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

A utility library from Square that simplifies reading and writing files, network sockets, and byte data in Android, Java, and Kotlin projects, filling gaps left by standard Java I/O tools.

A fast dependency injector for Android and Java.

A deprecated Java and Android library from Square that automatically wires up dependencies between classes at build time. Replaced by Dagger 2, only useful today for maintaining legacy codebases.

Fast n-dimensional filtering and grouping of records.

Remote network and data debugging for your native iOS app using Chrome Developer Tools

Config files for vim and tmux.

An enhanced Guava-based event bus with emphasis on Android support.

Cubism.js: A JavaScript library for time series visualization.

A lightweight wrapper around SQLiteOpenHelper which introduces reactive stream semantics to SQL operations.

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

Standalone Android widget for picking a single date from a calendar view.

Valet lets you securely store data in the iOS, tvOS, watchOS, or macOS Keychain without knowing a thing about how the Keychain works. It’s easy. We promise.

A Kotlin API for generating .kt source files.

Cube: A system for time series visualization.

IntelliJ IDEA code style settings for Square's Java and Android projects.

Name UI states, navigate between them, remember where you've been.

Distributing instrumentation tests to all your Androids.

A system for distributing and managing secrets

A lightning fast, transactional, file-based FIFO for Android and Java.

Tools to bootstrap CAs, certificate requests, and signed certificates.

A simple library that makes it easy to pair thin views with dedicated controllers, isolated from most of the vagaries of the Activity life cycle.

An implementation of JOSE standards (JWE, JWS, JWT) in Go

Lightweight Swift Dependency Injection Framework

A set of AssertJ helpers geared toward testing Android.

DEPRECATED Java library to automate the analysis of Android heap dumps.

A Kotlin compiler plugin to make dependency injection with Dagger 2 easier.

Phrase is an Android string resource templating library

A simple, static portal which outlines our open source offerings.

Android device shake detection.

Code quality threshold checking as part of your build

Plugin for sudo that requires another human to approve and monitor privileged sudo sessions

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

Commit fully-formatted Objective-C as a team without even trying.

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

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

I CAN HAZ LOGZ?

Makes fingerprint encryption a breeze.

Paralayout is a set of simple, useful, and straightforward utilities that enable pixel-perfect layout in iOS. Your designers will love you.

No description.

An IntelliJ IDEA plugin for Dagger which provides insight into how injections and providers are used.

A simple way to serve up appropriate images for every visitor.

shift is an application that helps you run schema migrations on MySQL databases

Declarative UI construction for iOS, written in Swift

Simple MVWhatever for Android

Block's Bitcoin Cold Storage solution.

A pure Java library implementing the GIF89a specification. Suitable for use on Android.

String extraction, translation and export tools for the 21st century. "Moving strings around so you don't have to"

Java client for the Thumbor image service which allows you to build URIs in an expressive fashion using a fluent API.

Lift the curtain on Android Windows!

a D3.js tutorial

Shard your builds for fun and profit

No description.

An IdlingResource for Espresso which wraps an RxJava Scheduler.

A unit testing library for varying test data.

FieldKit lets you take control of your text fields.

An IntelliJ IDEA plugin to navigate between events posted by Otto.

SuperDelegate provides a clean application delegate interface and protects you from bugs in the application lifecycle

Python Library for device debugging/programming via J-Link

JavaScript library to encrypt/decrypt data in JSON Web Encryption (JWE) format and to sign/verify data in JSON Web Signature (JWS) format. Leverages Browser's native WebCrypto API.

Sharkey is a service for managing certificates for use by OpenSSH

Code samples demonstrating the functionality of the Square Connect API

Extract, Transform, and Load data with Ruby

PAPA: Performance of Android Production Applications

Simple object validation for JavaScript.

Open source package for Survival Analysis modeling

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

Object-oriented, composable, fluent API for writing validations in Laravel

Flutter Plugin for Square In-App Payments SDK

Modular resource-based authentication and authorization for Rails/Rack

A CLI app and Gradle plugin to sort the dependencies in your Gradle build scripts

A CocoaPods plugin that allows you to easily generate a workspace from a podspec.

inspect is a collection of metrics gathering, analysis utilities for various subsystems of linux, mysql and postgres.

Aardvark is a library that makes it dead simple to create actionable bug reports.

Hack to get the iPhone Simulator to run on the command line

jet.pack: package your JRuby rack app for Jetty.

No description.

Declarative list views for iOS apps.

An extension for Google's AutoValue that omits redacted fields from toString().

Java parser for .proto schema declarations.

Go SQL utility library

Platypus Platform: Tools for Scalable Deployment

Utility for creating RFC-compliant multipart and form-encoded HTTP request bodies.

git clone --recursive on steroids

RRULE expansion for Ruby

Continuous Integration for KIF

Metrics Query Engine

The purpose of a quota service is to prevent cascading failures in micro-service environments. The service acts as a traffic cop, slowing down traffic where necessary to prevent overloading services. For this to work, remote procedure calls (RPCs) between services consult the quota service before making a call. The service isn’t strictly for RPCs between services, and can even be used to apply quotas to database calls, for example.

A Gradle plugin for generating Java code for your protocol buffer definitions with Wire.

A package-at-a-time wrapper for protoc, for generating Go protobuf code.

Utility to audit the balance of Hierarchical Deterministic (HD) wallets. Supports multisig + segwit wallets.

No description.

🔃 Inverted view of your Project

Everything you need to start or expand a women in engineering group in your community.

A simple library for letting Point of Sale take in-store payments for your app using Point of Sale API.

No description.

JSON <=> PHP8+ objects serialization / deserialization library

React Native Plugin for Square Reader SDK

PHP client library for the Square Connect APIs

A CocoaPods plugin for producing xcframeworks from podspecs.

Python client library for the Square API

Zstandard compression for Kotlin Multiplatform

Typescript client library for the Square API

BorderPatrol lets you import a KML file and then check if points are inside or outside the polygons the file defines.

simple command line to utility to run commands on multiple hosts in parallel

Quickstart for using Square's Web Payments SDK

A simple library for letting Point of Sale take in-store payments for your app using the Point of Sale API.

A Python framework for data science.

A Model Context Protocol (MCP) server for square

Jetpack Compose integration for Square Workflows.

Quickly and easily apply a template to a target string.

Flutter Plugin for Square Reader SDK

PJFDataSource is a small library that provides a simple, clean architecture for your app to manage its data sources while providing a consistent user interface for common content states (i.e. loading, loaded, empty, and error).

Distributed locking with MongoDB.

Open Source Software Task Robot Indestructible Computer Hero

No description.

A simple API for programmatically handling maven artifacts and metadata

Javascript client library for the Square Connect APIs

Template project for new Workflow-based Android apps – just clone and start building!

PHP client library for the Square API

This repository contains the OpenAPI specification as well as templates for generating SDKs for Square's APIs

Ruby client library for the Square API

Tool to find affected Gradle projects given the diff between commits

Java client library for the Square API

.NET client library for the Square API

Java utility for programmatically triggering and resolving PagerDuty incidents.

Build worker component of Kochiku

Keysync periodically downloads secrets from Keywhiz

A Java JNA wrapper around the GNU Multiple Precision Arithmetic Library.

Maker Design System by Square

No description.

No description.

Microservices on Rails

A whole bunch of functions, filters, and other tools that make writing Cascading flows a joy

Simple, flexible and lightweight configuration switching.

Configures your git author info with one or more people.

Embed JRuby Rack applications in your Java container.

Manage linux luks client devices and escrow recovery keys to crypt-server

No description.

In-App Payments Quick Start Sample Android App

A library to generate encrypted URLs for Thumbor in your iOS app.

Java client library for the Square Connect v2 API

DEPRECATED - The React Square Payment Form lets you take payments securely and easily in your React app using a familiar, component-based syntax.

A bazel ruleset creating a more idiomatic bazel representation of a maven repo using a pinned list of artifacts.

No description.

In-App Payments Quick Start Sample iOS App

This tool allows using a SPIFFE JWT to authenticate to AWS APIs

API versioning toolkit for Laravel apps

A dependency graph analysis library in Kotlin

VS Code extension for the goose developer agent

Semantic exit codes inspired by HTTP status codes

Repotoddy is a continuous deployment tool that works in conjunction with Reposado. An open source tool that replicates the key functionality of macOS Server's Software Update Service.

Python USB firmware update library

Provides loosely-coupled helpers for Sidekiq workers. Provides highly available scheduling across multiple hosts.

Reader SDK Quick Start Sample Android App

Builds a minimal subset of ICU required by OkHttp.

Square's specific extensions for Metro to make dependency injection easier.

Credit card (“plastic”) library for Ruby

Password rotation function for AWS Lambda and Secrets Manager

Square Web SDK

Go client library for the Square API

sqPaymentForm starter kit with Node.JS

Cascading 2 library for working with Protocol Buffers (Scheme, Serialization, and maybe even some functions/filters)

Pull data from MySQL and PG databases and consolidate it into a single target store.

System telemetry for Chrome OS

Shows why one CocoaPod depends on another

Public repository that hosts the Square In-App Payments SDK iOS binaries

No description.

Mobile Payments SDK Flutter Plug-in

A framework for presenting modal content deterministically in an iOS application.

Cross-host Sidekiq worker killswitches

DEPRECATED - The Square Payment Form Ember addon lets you take payments securely and easily in your Ember app using a familiar, component-based syntax.

Mobile Payments SDK React Native Plug-in

Public repository that hosts the Square Mobile Payments SDK iOS binaries

The "code" for squarectf.com

The code for the Mimic and Rephrase paper

No description.

No description.

Debug socket.

No description.

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

No description.

No description.

No description.

A regex language over rich tokens

Tinysweeper is a minimal remote attestation client library.

No description.

Compatibility classes to make wire-generated services work with gRPC server.

Micro websites for limited projects at square.github.io/microsite

Square's shared Prettier configuration

This repository is to be used by our internal teams for testing. PLEASE IGNORE.

Library packaging and distribution for Ruby.

Usb serial controller for Android

A Gradle plugin that infers Proguard/R8 keep rules for androidTest sources.

A package for observing the frame of the on-screen keyboard

No description.