1DevTool vs Herdr
Visual multi-agent workspace vs terminal agent multiplexer
1DevTool
1DevTool is a multi-agent AI workspace that runs Claude Code, Codex CLI, Gemini CLI, and any CLI agent in parallel persistent terminals, each in its own Git worktree. Beyond orchestration it ships a full visual toolchain — Monaco editor, HTTP client, 13-engine database client, embedded browser, and Docker — all wired into Send-to-AI. Bring your own keys, run offline with no account, pay once at $29.
Herdr
Herdr is an open-source (AGPL-3.0) terminal-native agent multiplexer written in Rust — a single ~10MB binary with zero dependencies. Think tmux, but agent-aware: every coding agent gets a real PTY pane, and Herdr tracks each one's live state (blocked, working, done, idle). Sessions run on a background server you can detach from and reattach to over SSH — even from your phone — with a CLI and Unix-socket API for orchestration. Free, no accounts, no telemetry, no Electron.
Basics
| Feature | 1DevTool | Herdr |
|---|---|---|
| Price | $29 one-time | Free (open source, AGPL-3.0) |
| Type | AI workspace + terminal | Terminal agent multiplexer |
| Interface | Native GUI | Terminal TUI (mouse-friendly) |
| Footprint | Desktop app | Single ~10MB binary, zero deps |
| Platforms | macOS, Windows, Linux | Linux, macOS; Windows (beta) |
Agent Orchestration
| Feature | 1DevTool | Herdr |
|---|---|---|
| Run agents in parallel | Grid + pipelines | Panes, tabs, workspaces |
| Agent-agnostic (any CLI agent) | ✓ | ✓ |
| Claude Code / Codex support | ✓ | ✓ |
| Gemini CLI support | ✓ | Via any terminal agent |
| Live agent-state awareness (working / blocked / done) | Per-terminal status | Core feature |
| Switch AI agent per terminal | ✓ | ✓ |
| Git worktree isolation per agent | ✓ | ✗ |
| Agent Pipelines (planner → implementer → reviewer) | ✓ | ✗ |
Built-in Developer Tools
| Feature | 1DevTool | Herdr |
|---|---|---|
| Code editor | Built-in Monaco | ✗ |
| HTTP / API client | ✓ | ✗ |
| Database client | 13 engines | ✗ |
| Embedded browser | ✓ | ✗ |
| Docker manager | ✓ | ✗ |
| Send-to-AI from tools | Browser / HTTP / DB → agent | ✗ |
| Plugin marketplace | ✗ | ✓ |
Sessions, Access & Privacy
| Feature | 1DevTool | Herdr |
|---|---|---|
| Persistent sessions (survive restart) | Tmux-backed | Background server (detach / reattach) |
| Resume sessions from Ghostty / iTerm / Warp | ✓ | ✗ |
| Remote access from phone | Phone remote control | SSH thin-client |
| Scriptable CLI / API | MCP server | CLI + Unix-socket API |
| Local-first, no telemetry | ✓ | ✓ |
| Account required | ✗ | ✗ |
What you get with 1DevTool
The tools that set 1DevTool apart from Herdr — built in, no plugins.
The Verdict
Choose 1DevTool if...
- ✓You want a full visual workspace — Monaco editor, HTTP client, database client, embedded browser — not a terminal-only multiplexer
- ✓Send-to-AI: push an API response, query result, or web page straight into an agent
- ✓You want Git worktree isolation and Agent Pipelines built in, not just panes and tabs
- ✓You're on Windows and want a stable desktop app (Herdr's Windows build is beta)
- ✓You prefer a point-and-click GUI over a keyboard- and mouse-driven TUI
- ✓You want a one-time $29 license with the whole dev toolchain included
Choose Herdr if...
- •You want a free, open-source, single ~10MB binary with zero dependencies
- •You live in the terminal and want tmux-style panes that are agent-aware
- •You value live agent-state tracking (blocked / working / done) across the whole herd
- •You want to detach and reattach agent sessions over SSH, even from your phone
- •You prefer a lean, scriptable tool with a CLI and socket API over a full GUI app
Try 1DevTool Today
Multi-agent AI workspace for developers. $29 one-time payment.