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Coding assistants

Reasonix

An AI coding assistant that reads your project, edits files and runs tests, asking before each step if you want.

Fast-rising

What it does

Reasonix is an open-source AI coding assistant. You describe a task in plain language, and it reads your code, changes files and runs commands and tests inside the project folder you choose.

You decide how much freedom it has: it can ask before every step, or handle everyday actions on its own within rules you set. A plan mode shows its approach first. Files it edited can be rewound to an earlier point.

The program runs on your computer, while the AI model is a service you choose and pay for directly. A DeepSeek option is built in, and other OpenAI-compatible services can be added. It's available as a desktop app, a terminal tool and in browsers and editors.

Who it's for

Programmers who want an AI helper that can make and test changes in their code.

Can I use it without coding?

With some setup. There's a desktop app to download, but you'll need an AI provider key and a coding project to work on. New to this? Start here.

Can I run it?

Cost
Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
Computer
An ordinary computer is fine
Privacy
Sends what you give it to an online service
API key
Needed. An API key is a password-like code from an online AI service. What's that?

Try it

  1. Download and install the Reasonix Studio desktop app from the project's releases page.
  2. Open it and enter your AI model provider and key when asked.
  3. Open your project folder, describe what you want, and approve or refuse each step.
Official download page

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page or the official download page above. Copies with similar names exist for many popular projects.
  • License (MIT): Very permissive: free to use, change and share, including for business.
  • Keep your API key private. Never paste it into websites or share it, and set a spending limit with the AI service.
  • What you type or upload is sent to an online service. Avoid sharing private or sensitive information.
  • More on staying safe