One top contender is Code Snippets AI, an information retrieval system that uses a variety of AI models like GPT-4, Mixtral 8x7B and Capybara 7B to produce code in a chat interface. The system can handle a broad range of programming languages, including Python, Java, C++ and many others. It can generate code, but also can create documentation, refactor code and debug it. It offers a free desktop app with open-source models and Pro and Teams plans for more features, so it's a good option for developers.
Another contender is CodeAI, a VS Code extension that uses AI to help developers write code, generate unit tests and create documentation. It supports several languages, including JavaScript, Python, C++ and others. CodeAI offers a range of features like code completion, test generation and documentation generation, along with strong data security to keep your code private.
If you want a fuller featured AI platform, Google AI offers a wide range of tools and services to boost productivity and collaboration among developers. It includes generative AI tools for creating content, access to AI research and development tools like Google AI Studio and Firebase, and support for a variety of programming languages. The platform has a focus on responsible AI use and offers a range of features to automate tasks and bring new ideas to market.