A lightweight inline completion engine for C and C++ in VSCode and Cursor.

Flow++ provides fast local inline completions while you type.

In this example, consteval and constexpr are suggested by Flow++ and identified by this icon.

Flow++ includes completion support for:

• Algorithms
• Atomics
• Chrono
• Concepts
• Containers
• Contracts
• Execution
• Expected
• Filesystem
• Format
• Memory Utilities
• Optional
• Ranges
• Range Views
• Stop Tokens
• Threads
• Type Traits
• Variant
• Standard Library Headers
• C and C++ Keywords
• Preprocessor Directives

• Fast local inline suggestions
• No AI services required
• No internet connection required
• Works alongside clangd
• Low-overhead completion generation

• C (C90 through C23)
• C++ (C++11 through C++26)

• Debounced suggestions to reduce flickering
• Automatic language detection
• Correct handling of .c,.cpp,.h and .hpp files
• Toggle via status bar
• Toggle via command palette
• Configurable extension settings

• VS Code
• Cursor
• Node.js 18.x or later (for building from source)
• vsce (for packaging)

Clone the repo and install the npm dependencies in the following order:

npm install
npm run compile

Package the extension:

vsce package

Install into Cursor:

cursor --install-extension flowplusplus-2.0.0.vsix

Or install into VS Code:

code --install-extension flowplusplus-2.0.0.vsix

This project is licensed under the MIT License - see the LICENSE file for details.