Open sourceReplica: GitHub's open-source AI prototyping tool, under MIT
According to GitHub, Replica builds interactive prototypes from your team's design system, through the GitHub Copilot app.
Source of truthgithub.blog/…/2026-10-28-introducing-re…On October 28 GitHub open-sourced Replica, under the MIT license: a GitHub Design tool for interactive AI prototypes. According to GitHub, designers set the guidance based on the team's components, and anyone on the team can describe what they want in plain language in the GitHub Copilot app. According to GitHub, Replica's tooling and guidance can be customized to fit a team's product and workflows. Replica Hub, for comments, is optional and self-hosted. Which Copilot plan is needed is not stated. The same day, GitHub Agentic Workflows became generally available.
Other sources: github.blog/…/2026-10-28-github-agentic…github.com/features/copilot/plans
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