square

A memory leak detection library for Android.

A powerful image downloading and caching library for Android

A Java API for generating .java source files.

A modern JSON library for Kotlin and Java.

A fast dependency injector for Android and Java.

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

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

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

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.

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 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.

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!

Shard your builds for fun and profit

a D3.js tutorial

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.

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

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

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.

Code samples demonstrating the functionality of the Square Connect API

Sharkey is a service for managing certificates for use by OpenSSH

Extract, Transform, and Load data with Ruby

Documentation format and verification

PAPA: Performance of Android Production Applications

Simple object validation for JavaScript.

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

Open source package for Survival Analysis modeling

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

Flutter Plugin for Square In-App Payments SDK

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

Modular resource-based authentication and authorization for Rails/Rack

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.

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

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

Java parser for .proto schema declarations.

Declarative list views for iOS apps.

Go SQL utility library

Platypus Platform: Tools for Scalable Deployment

git clone --recursive on steroids

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

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...

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.

🔃 Inverted view of your Project

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

A CocoaPods plugin that shows differences between locked and installed Pods

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

Zstandard compression for Kotlin Multiplatform

JSON <=> PHP8+ objects serialization / deserialization library