JetBrains s.r.o.

Kotlin enhances productivity by offering concise code and seamless Java interoperability.

Share logic across platforms while maintaining native feel.

Develop beautiful shared UIs that feel native across Android, iOS, desktop, and web platforms.

Essential tools for effective Kotlin development, simplifying coding tasks and enhancing productivity.

Facilitates framework-agnostic testing with Kotlin through robust annotations and assertion functions.

Automate Kotlin builds and streamline development processes with Kotlin Gradle plugins.

Create high-performance web applications with Kotlin.

Provides multiplatform date and time handling for Kotlin.

Facilitates efficient I/O operations across multiplatform environments.

Enable efficient asynchronous programming with Kotlin coroutines.

Enables seamless serialization of Kotlin objects into various formats.

Offers immutable and persistent collection types for Kotlin Multiplatform.

Development of scalable cross-platform web and mobile applications, including full-stack engineering, agile delivery, and ongoing support for performance and maintenance.

Products: Kotlin Multiplatform, Kotlin, Kotlin Gradle Plugins, Kotlin Standard Library, kotlinx-serialization, kotlinx-coroutines, kotlinx-collections.immutable, kotlinx-datetime

Frameworks and libraries for building shared declarative user interfaces with hot reload and production-ready iOS support.

Products: Compose Multiplatform, Kotlin Multiplatform, Kotlin Gradle Plugins

A modern, interoperable language and its core libraries providing runtime primitives, collection utilities and cross-platform APIs.

Products: Kotlin, Kotlin Standard Library

Asynchronous, coroutine-based web application frameworks and libraries for building scalable non-blocking backends.

Products: Ktor, kotlinx-coroutines, kotlinx-serialization, Kotlin

Capabilities that automate testing across CI/CD pipelines, support multiple frameworks, and provide dashboards and analytics for test coverage and release quality.

Products: Kotlin Gradle Plugins, Kotlin Test, Kotlin

Kotlin

Kotlin is an open-source, cross-platform programming language developed and maintained by JetBrains. The language supports a global developer community and provides official documentation and tooling for Kotlin projects, with backing from the Kotlin Foundation and JetBrains.

• Facilitates Various Platforms
  Kotlin allows developers to build applications across multiple platforms, including Android, iOS, and backend services, making it a versatile choice for projects.
• Ensures Continuous Improvement
  Regular updates and community engagement provide reassurance of Kotlin's evolution and ongoing relevance in the tech landscape.
• Utilizes Existing Java Libraries
  This feature enables teams to integrate Kotlin into existing Java projects effortlessly, maximizing resource and code reuse.
• Improves Developer Productivity
  By minimizing code complexity, developers can focus on core business logic, resulting in faster development cycles and fewer bugs.
• Enables Cross-Platform Development
  This feature allows development teams to write shared code and reduce duplication while maintaining native performance.
• Access to Community Resources
  The robust community offers valuable support, plugins, and shared knowledge, making it easier for beginners to learn and adopt Kotlin.

Kotlin Multiplatform

Kotlin Multiplatform enables sharing of core business logic and API services across platforms, reducing duplication and enabling platform-specific UIs when needed. It supports mixing shared logic with native code and can be adopted progressively across Android, iOS, and web ecosystems.

• Enables Code Reuse Across Platforms
  By sharing core business logic, Kotlin Multiplatform helps reduce the effort required for development. Developers can maintain native feelings for each platform while avoiding the complexity of maintaining separate codebases.
• Unified Logic and Platform Integration
  The architecture allows for shared logic to communicate with native APIs, enabling seamless functionality across different platforms while ensuring high performance.
• Create Unified UIs Across Platforms
  With Compose Multiplatform, developers can write shared UI code and maintain consistent user experiences on Android, iOS, web, and desktop using Jetpack Compose principles.
• Gradually Incorporate Shared Logic
  Facilitates transitioning to a shared code model, allowing teams to incrementally integrate Kotlin Multiplatform into existing projects without needing a complete overhaul.
• Leverage Community Contributions
  A vibrant community and many libraries contribute to Kotlin Multiplatform, providing developers with resources, tools, and shared knowledge to enhance their development processes.

Compose Multiplatform

A declarative UI framework powered by Kotlin Multiplatform and Jetpack Compose, enabling shared UI across platforms. It supports a complete cross-platform UI solution with production-ready status for iOS.

• Enables Native-Quality UIs
  Create responsive, platform-specific user interfaces that integrate seamlessly with native APIs, ensuring optimal performance across devices.
• Deploy on iOS Efficiently
  Utilize a stable framework that allows iOS applications to take advantage of Kotlin’s capabilities for shared code and functionality.
• Instant UI Tweaks
  Streamline the development workflow by enabling quick visual changes, improving efficiency in the app development process.
• Speed Up UI Coding
  Leverage AI technologies to quickly generate UI components and completeness of screens, boosting developer efficiency.
• Start Small or Go Big
  Easily incorporate shared components into existing applications without requiring a full rewrite, facilitating smooth transitions for teams.

Kotlin Standard Library

The Kotlin Standard Library provides core functions and types used across Kotlin code. It includes higher-order functions, extension functions for collections, utilities for strings and character sequences, and extensions for Java standard library classes to simplify IO, files, and threading.

• Facilitates Common Programming Patterns
  Provides builders for common programming constructs, aiding developers in writing efficient and modular code.
• Enables Flexible Coding Patterns
  Supports functional programming paradigms through higher-order functions and customized operations on collections.
• Simplifies IO and File Handling
  Enhances productivity by providing convenient methods for working with strings, file operations, and threading through JDK class extensions.
• Supports Cross-Platform Development
  Enables developers to write shared code effectively across multiple platforms, maintaining a unified coding experience.

Kotlin Test

The kotlin.test library provides annotations to mark test functions and a set of functions for performing assertions in tests, independently of the test framework being used. It includes modules for common code, common annotations, and multiple test runtimes.

• Abstracts Testing Logic
  This feature allows developers to decouple their tests from specific frameworks, providing flexibility in testing methodologies.
• Enables Structured Testing
  By using annotations and assertions, developers can create clear and maintainable tests, improving code quality and developer productivity.
• Supports Multiple Runtimes
  This functionality enables developers to run tests across different environments, ensuring compatibility and versatility.

Kotlin Gradle Plugins

The Kotlin Gradle plugins automate compiling, testing, and packaging Kotlin code, simplifying JVM and multiplatform builds, managing dependencies, and integrating with IDEs and CI systems.

• Automate Build Processes
  This feature enables developers to streamline their build processes, reducing manual setup and configuration while enhancing productivity.
• Simplify Multiplatform Development
  This feature helps in managing dependencies across platforms easily, allowing developers to focus on writing code instead of worrying about build configurations.
• Enhance IDE Workflow
  The integration provides auto-completions, suggestions, and direct access to Kotlin features, making the coding experience smoother for developers.
• Improve CI Integration
  This feature ensures that your Kotlin applications can be easily compiled and tested in CI environments, increasing reliability and delivery speed.

Ktor

Ktor is a multiplatform toolkit built by JetBrains for creating web applications in Kotlin. It leverages coroutines for high scalability, allowing developers to write asynchronous and non-blocking applications easily. Ktor offers a simple and expressive API that supports various features, enabling smooth integration into existing applications while maintaining efficient performance.

• Utilize Coroutines
  Using coroutines simplifies asynchronous programming in Ktor, enabling developers to write more readable and maintainable code while making effective use of resources.
• Configure Routes Effortlessly
  The flexible routing capabilities in Ktor allow developers to define application behavior based on specific routes, simplifying request management and enhancing user experience.
• Access Comprehensive Guides
  With extensive documentation, Ktor users can access the necessary information to utilize the framework effectively, reducing onboarding time and speeding up development.
• Enhance Existing Applications
  Ktor's compatibility with well-known frameworks allows developers to enhance their existing applications without extensive rewrites, facilitating smoother upgrades and improvements.

kotlinx-datetime

kotlinx-datetime offers a date and time module for Kotlin multiplatform, providing essential functionality for calendar-based computations and timezone operations.

• Handles Dates and Times Effectively
  kotlinx-datetime enables developers to manage dates and times with ease across multiple platforms, supporting a variety of operations related to calendars and timezones.
• Performs Timezone Calculations
  This feature permits accurate scheduling and date manipulations that consider local time zones, ensuring that applications operate correctly regardless of user location.

Kotlinx I/O

kotlinx-io provides the Kotlin I/O library, including core multiplatform IO primitives and platform integration.

• Streamlined I/O Handling
  Offers robust primitives for reading and writing binary streams and buffers efficiently.
• Utilize Efficient Byte Handling
  Includes the ByteString module to represent and operate on byte sequences effectively.
• Seamless Interoperability
  Enhances compatibility with Okio library for advanced I/O operations.

kotlinx-coroutines

kotlinx-coroutines offers core primitives to work with asynchronous coroutines in Kotlin.

• Facilitates Coroutine Management
  Provides essential functions and types for launching, executing, and managing coroutines efficiently, ensuring structured concurrency.
• Supports Flow API
  Enables the creation and consumption of asynchronous data streams, allowing for non-blocking operations that improve responsiveness in applications.
• Optimizes Execution Contexts
  Includes Dispatchers.Main for UI operations, Dispatchers.IO for I/O-bound tasks, and Dispatchers.Default for CPU-intensive tasks, facilitating optimal resource utilization.
• Enables Safe Concurrent Access
  Features constructs like Mutex and Semaphore that allow for controlled access to shared resources among coroutines, improving data integrity.
• Facilitates Coroutine Testing
  Specialized test utilities that help ensure that coroutine code behaves correctly under various scenarios, enhancing software reliability.

kotlinx-serialization

kotlinx-serialization provides core serialization API and serializers for standard Kotlin types, including a JSON format implementation.

• Facilitates Kotlin Object Serialization
  The core serialization API seamlessly handles the serialization process for standard Kotlin types, allowing for easy data interchange across platforms.
• Transforms Kotlin Objects To JSON
  This feature allows the effortless conversion of Kotlin objects to JSON format, enabling smooth data sharing with web services and handling of JSON data structures.
• Efficiently Encodes Data
  Provides support for CBOR format, allowing serialization of data in a compact binary representation, which reduces the size of data transmitted over networks.
• Integrates With Protocol Buffers
  Allows the use of Protocol Buffers for high-performance serialization, which is widely used in applications for its efficiency and versatility.

kotlinx-collections.immutable

kotlinx.collections.immutable provides immutable and persistent collection types for Kotlin Multiplatform.

• Ensure Data Integrity
  These collections guarantee that data remains unchangeable after creation, enhancing safety and predictability while interacting with shared data in concurrent environments.
• Facilitate Cross-Platform Development
  The library allows developers to write code once and deploy it across multiple platforms, reducing redundancy and effort in maintaining separate codebases.