GitHub Copilot→5 open-source options

Open-source GitHub Copilot alternatives

Microsoft’s AI pair programmer for completions, chat, and coding agents in the editor. Below are curated open-source options listed on OpenElse, with notes on when each is a better fit.

Official site: github.com/features/copilot

OpenCode

Open-source coding agent with a terminal UI and broad model-provider support.

Self-host optional

Aider

Git-native AI pair programming in the terminal with reviewable diffs and commits.

Self-host optional

Cline

Autonomous coding agent as an IDE extension, CLI, or SDK with approval-gated steps.

Self-host optional

Continue

Open-source coding agent and autocomplete for VS Code and JetBrains with custom models.

Self-host optional

Tabby

Self-hosted AI coding assistant for completions you run on your own infrastructure.

Self-hostable