Noctule, the Swift IDE downloads statistics

Cross-platform Swift language support for JetBrains IDEs 2026.1 and later. Noctule supports Swift Package Manager and Xcode projects, and debugging with LLDB.

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Important: Noctule is a freemium plugin. Most features are free to use, but some require a paid license.

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Platform Support

• JetBrains IDEs 2026.1 and later are supported. Noctule integrates with JetBrains plugins JSON, Git, Spellchecker, Markdown, Copyright, and IntelliLang. • Android Studio releases based on IntelliJ Platform 2026.1 and later are supported, including LSP support, which other Swift plugins don't provide. • JetBrains remote development with support for language support on the frontend and build logs of the backend shown in the frontend. • Development containers support integrates with your IDE's built-in support. • macOS, Linux and Windows are supported with Swift Package Manager and also Xcode projects on macOS.

Language Support

• Swift 6.4 language specification support • Syntax highlighting, including semantic token highlighting and customizable color schemes settings • Code folding with custom settings for default code folding • Brace matching with auto-close for {}, (), [] and for string interpolation tokens \() • Comment support for line and block comments • Native code formatter for Swift and Objective-C. • Format on Save with SwiftFormat, Swift's own swift format, and SwiftLint. • Duplicate code detection with IDEs support the feature.

Navigation and Code Insight

• Go to Declaration • Go to Implementation • Go to Class and Go to Symbol • Find Usages • Rename refactoring • Structure view supporting all Swift types and conditional compilation blocks • Quick documentation with colored rendering of embedded code blocks, retrieved from your source files • Type hierarchy with supertypes, subtypes, or both in a single hierarchy • Call hierarchy showing callees (outgoing calls) or callers (incoming calls)

Editor Support

• Code completion with context-aware suggestions • Error highlighting with quick fixes for Swift files • Diagnostics of SwiftLint and SwiftFormat are shown in the editor • Inlay hints for types and parameters • Language injection support for string and multiline string literals • File templates for common Swift declarations • ToDo item highlighting • Breadcrumb navigation support • Parameter info support for function signatures • Live Templates for common Swift elements and suitable contexts to add your own

Most of the language features rely on Apple's sourcekit-lsp and need an installed Swift toolchain.

Debugger

• Debugging for Swift, Objective-C and C code, based on lldb-dap of the Swift toolchain. It needs a Noctule license or trial. • Breakpoints and watchpoints, an LLDB console and a rich debugger integration with LLDB of the Swift toolchain.

Swift Toolchain Support

Noctule automatically detects Swift toolchains on your system:

• Installed in $PATH and common installation locations of Swift on Windows • Swiftly toolchains, including toolchains inside a Windows WSL container • Xcode toolchains • User-defined toolchains to add your own paths

Swift Package Manager Support

• Swift Package Manager projects are detected and supported as SourceKit LSP workspaces • "New Project…" wizard to quickly create such a project. • Test runner to execute tests of a Swift PM project integrating with the test runner UI. • swift run run configuration, including support for the optional "Build" step • swift build run configuration • swift test run configuration, including support for the optional "Build" step and run line markers for suites and functions. • Build Project support to build Swift PM projects for with Build Project or Build Module.

Xcode Support

Noctule integrates Xcode with the help of xcode-build-server and Apple's SourceKit LSP.

Refer to Noctule's documentation about its Xcode support to learn more about the integration.

• Xcode project support: Open the directory containing an Xcode workspace (*.xcworkspace) or project (*.xcodeproj) and Noctule will automatically set up the IDE project. • Choose scheme and destination: Available in the main toolbar and similar to Xcode. Run and debug on simulators directly from the toolbar. • Build Project support to build the selected scheme and destination with xcodebuild. • xcodebuild run configuration: Execute the build for a specific workspace/project, target, scheme and destination. • Xcode simulator run configuration: Build, deploy and debug applications on an Xcode simulator. • Xcode test run configuration: Run Xcode tests with the test runner you already know. • Simulator toolwindow: Manage Xcode simulators in a dedicated toolwindow. • Project view for Xcode workspaces and projects. • Xcode 27 project format: The new JSON project format (project.xcproj) and .xcconfig files are supported. • Support for Plist files: old-style, XML, and binary Plist files are supported. • Highlighting and navigation inside Xcode *.pbxproj project files. • Highlighting for *.xcstrings, contents.xcworkspacedata, *.entitlements, *.xcscheme, *.intentdefinition, *.storekit, *.xcstrings.

Description from the JetBrains Marketplace listing.