UseAgent: open-source shared workspace for Claude Code/Codex/OpenCode/Pi
At a glance
AGPL self-hostable workspace runs Claude Code, Codex, OpenCode or Pi in isolated sandboxes; hand off from Slack/web/API, attach playbooks/skills/knowledge, approve sensitive actions, and get PRs or files back—positioned as an open Devin alternative. This workflow is listed under coding-agent, cloud-agent, team-workflow, devtools, open-source.
LiteLLM open-sourced Moyai—the Devin-like cloud agent they run in production: Slack/browser tasks get isolated cloud workspaces (terminal+FS+browser), run Codex/Claude Agent SDK/Hermes/OpenCode, open PRs, and attribute spend through your LiteLLM gateway (they estimate ~79% lower vs their Devin bill).
Tern is a free closed-source Mac-native (CLI/TUI also on Linux) control plane for 16 coding-agent CLIs: each task gets its own git worktree/branch, changes land in one review queue with comments routed back to the agent, conflict radar, multi-step runs with gates, phone approvals without Tern servers, and a daemon that keeps agents alive after you close the window.
Apache-2.0 Paseo runs Claude Code, Codex, Copilot, OpenCode, Pi, Antigravity, and Muse Code in isolated worktrees from desktop, native mobile, or remote hosts—with MCP/CLI/SDK automation, plugins, and optional E2E-encrypted relay so you steer agents without changing their subscriptions.
Parallax is a Windows/Linux desktop workspace that runs Claude Code, Codex, Antigravity or any shell in named panes with a built-in editor, local Git, session directory, voice chat, and saved layouts—agents stay independent (no auto-orchestration); local-only data; subscription required ($11.99/mo or $99.99/yr USD) plus your provider plans.