GitHub Copilot
More mature with deep GitHub integration but is a paid-only service.
Tabnine
Offers AI completions with strong multi-language support and enterprise focus.
Kite
Focuses on Python with free and paid tiers but less language coverage.
Amazon CodeWhisperer
AWS-integrated AI coding assistant with strong cloud service support.
PolyCoder
Open-source AI code generator with a focus on C programming.