5 Free AI Tools for Understanding Code and Generating Documentation

by SkillAiNest

5 Free AI Tools for Understanding Code and Generating DocumentationPhoto by author

# Introduction

We all know that understanding a new codebase is quite difficult. You’re opening file after file, reading comments that don’t make much sense, and trying to figure out how the different parts connect. It doesn’t matter whether you are in research or working in a company. It’s the same struggle. But AI tools are making the process easier. They can map out how the code works, give you quick summaries, and answer questions just like a colleague would. This is much faster than doing it all by hand. Let’s look at five such tools that really help.

# 1. Google Code Wiki

Google Code Wiki is an AI-based documentation tool. It scans a repository after each commit and creates structured documents. It can add diagrams and link different sections of code together. There’s also a chat interface powered by Google’s Gemini AI. You can ask questions about the code in natural language. The CodeWiki is currently in public preview and free for public repositories. Private repositories are supported by the Waitlist with CLI tool.

# 2. Deep Wiki

Deep Wiki Generates interactive documentation for any GitHub repo. You just enter the repo URL, and it creates structured documentation with diagrams of the architecture and modules. You can also ask questions about the code in the chat interface. Important features are free for public repositories. Enterprise features, such as private repo support and dedicated support, are available with custom pricing.

# 3. Define GitHub.

Define GitHub. GitHub helps you discover repositories quickly. You get quick summaries, visual maps, and an AI chat that answers questions about functions, structures, and architecture. It’s free for public repositories, and you don’t need to sign up or subscribe. It is designed to make code searches easier.

# 4. GitDocs AI

GitDocs AI Helps you write documentation for your code. It automatically generates README files and other documentation. AI looks at your repo and creates sections, examples and templates. It connects directly to GitHub and lets you edit and preview. There is a free version, and paid plans are available for advanced features or team use.

# 5. GitSummarize

GitSummarize GitHub turns the repo into a complete documentation hub. It automatically creates summaries and documents. This makes large, complex codebases easier to understand. It’s free to try. It is open source with a community behind it. Paid plans or enterprise pricing are not clearly listed.

# wrap up

  • Best for understanding the entire code base: CodeWiki and DeepWiki
  • The easiest quick code explanation: ExplainGitHub
  • Best README/Documentation Creation: GitDocs AI
  • Detailed documentation hub with architecture visuals: GitSummarize

Kanwal Mehreen is a machine learning engineer and a technical writer with a deep passion for AI along with data science and medicine. He co-authored the e-book “Maximizing Productivity with ChatGPT”. As a Google Generation Scholar 2022 for APAC, she is a champion of diversity and academic excellence. She has also been recognized as a Teradata Diversity in Tech Scholar, a Mitacs Globalink Research Scholar, and a Harvard WeCode Scholar. Kanwal is a passionate advocate for change, having founded FEMCodes to empower women in STEM fields.

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