Best Arena Agent Mode Alternatives in 2026

Build, customize, and ship emails — all from your own app

An open-source email editor you can embed in your own app

Build AR/VR Apps in React Native + ship directly to devices

Turn Claude into your digital coworker

Claude’s most advanced model for agentic tasks

Create specialized AI agents for real tasks and workflows

Enable Claude to use your computer to complete tasks

Native iOS & Android App + Browser Extensions for scheduling

Automate files, apps, and workflows with Manus Desktop

Your Notion workspace, inside every AI agent

Schedule recurring tasks locally and in the cloud easily

Turn your repetitive workflows into AI-powered playbooks