GitHub
Where the code already is. The AI tools on this list act on repositories, pull requests and Actions rather than replacing them, so this is the thing they plug into.
Where the code already is. The AI tools on this list act on repositories, pull requests and Actions rather than replacing them, so this is the thing they plug into.
The categories GitHub is listed in, and how strong a fit it is in each.
Programming, debugging, data analysis, spreadsheets, math, engineering, technical research.
GitHub has a free plan. Free plan for individuals and organisations
Copilot is sold separately from Microsoft 365 Copilot and aimed at a different job, which is why both appear on this site.
Also from GitHub: GitHub Copilot.
Tools that do comparable work, best fit first, drawn from the catalogue rather than hand-picked. Every one is listed whether or not there is money in it for us.
Best general option for explaining unfamiliar code, debugging a single file, or analysing a spreadsheet with real Python behind it.
View ChatGPT →Reads long files and whole error traces without losing the thread, which makes it good at explaining unfamiliar code and debugging in a chat window.
View Claude →Reviews pull requests line by line and leaves comments in the diff, with the reasoning attached rather than a score.
View CodeRabbit →The editor most professional developers have converged on. Understands a whole codebase, not just the open file.
View Cursor →The default, and the one already wired into the editor and the pull request your team uses. A free tier now covers light use.
View GitHub Copilot →Upload a spreadsheet and it writes and runs real code against it, showing the working rather than describing it.
View Julius AI →Where GitHub sits in the wider category pages.
Works, not its focus — Programming, debugging, data analysis, spreadsheets, math, engineering, technical research.
Yes — Free plan for individuals and organisations. The cheapest paid tier is Team, at $4/mo.
Where the code already is. The AI tools on this list act on repositories, pull requests and Actions rather than replacing them, so this is the thing they plug into. It is listed under Coding, Data & Technical Work.
Not an AI tool itself — the AI is Copilot, priced separately above. Both paid seat prices are introductory and hold for the first twelve months only.
6 tools do comparable work: ChatGPT, Claude, CodeRabbit, Cursor, GitHub Copilot, Julius AI. 6 of them have a free plan.
Checked by hand on 4 September 2026. Prices change often — confirm on the provider's own page before spending.