Question: I'm looking for a tool that can explain complex code snippets and suggest improvements.

If you're looking for a tool that can explain code and suggest improvements, Codeium is a top pick. This AI-powered coding assistant supports more than 70 programming languages and plugs into major IDEs. It's got fast and accurate autocomplete, AI-powered search, and an AI chat that writes boilerplate code, refactors code, generates documentation, explains code and suggests bug fixes. Codeium is for individuals and teams, with a variety of pricing levels to match your needs.

Another contender is Metabob, which uses graph-attention networks and generative AI to help with code review, refactoring and debugging. It's good at improving software security and quality by spotting and fixing tricky coding problems. Metabob offers AI code review, software security scanning, debug and refactor abilities, and can be self-hosted. It's got a free plan for solo developers and paid plans starting at $20 per month per developer.

If you prefer open-source options, Refact has a lot to offer, including fast code completion, code improvement tools and a built-in chat. It supports multiple Large Language Models (LLMs) and can be customized with self-hosted versions with privacy controls. Refact's pricing levels range from personal use to enterprise, so it's a good option for those who want to improve productivity and privacy.

Last is Code Snippets AI, which uses multiple AI models to generate, refactor and debug code in a chat interface. It supports a broad range of programming languages and comes with a free desktop app with Pro and Teams plans. It's updated regularly based on user feedback to improve coding speed, accuracy and collaboration.