Project Mariner alternatives
The 8 closest alternatives to Project Mariner, ranked. Each does roughly the same job from a different angle.
OpenAI Operator
OpenAI's autonomous browser agent for completing tasks on the web
autonomousbrowser-agent From $200/mo
Anthropic Computer Use
Claude's computer-use capability that powers desktop and browser agents
autonomouscomputer-use Paid
Manus
Browser-based autonomous AI agent for research, app building, and end-to-end tasks
autonomousresearch Free + from $39/mo
Devin
Autonomous AI software engineer that works on tickets end to end
codingautonomous From $500/mo
Cline
Open-source autonomous coding agent that runs in VS Code with full visibility
codingvscode-extension Free
Replit Agent
Browser-based autonomous coding agent that builds and deploys full-stack apps
codingautonomous Free + from $20/mo
Bolt.new
Browser-based AI app builder powered by StackBlitz WebContainers
codingautonomous Free + from $25/mo
v0
Vercel's AI app builder with first-class shadcn/ui and Next.js integration
codingautonomous Free + from $30/mo
Frequently Asked Questions
What is the best alternative to Project Mariner?
The closest alternative to Project Mariner is OpenAI Operator, openai's autonomous browser agent for completing tasks on the web.
Why look for an alternative to Project Mariner?
Common reasons people switch from Project Mariner are pricing, missing integrations, or wanting an open-source option. The picks below cover those angles.