abtop

abtop is a terminal-based monitoring tool that tracks active AI coding agents, displaying token usage, context windows, and child processes in real-time.

abtop functions as a system monitor for AI coding agents including Claude Code, Codex CLI, and OpenCode. It discovers sessions from local process and file states, allowing users to view token usage, context window percentages, rate limits, and open ports for multiple concurrent agents. The tool operates in a read-only mode, requiring no API keys or authentication for standard monitoring. It integrates directly with terminal multiplexers like tmux, cmux, and iTerm2 to allow jumping to specific agent sessions. Developers can also use abtop as a library crate to integrate its data-collection layer into custom tools and generate JSON snapshots of agent state.

abtop at a glance

Best for: Software engineer
Runs on: macOS, Linux, Windows, CLI
Pricing: Open source (MIT license)
Released: March 2026
Category: AI coding tool
Website: github.com/graykode/abtop

Key features

Real-time tracking of token usage and context window percentages
Orphan port detection for servers spawned by agents
Support for multiple active profiles across operating systems
Session jump functionality for tmux, cmux, and iTerm2
Twelve built-in themes including colorblind-friendly options
Subagent tree view and rate limit monitoring
JSON snapshot generation via a library crate

Use it for

Monitoring multiple AI agents across different projects
Tracking agent rate limits and context window usage
Detecting and killing orphan ports left by inactive agents
Switching between active agent terminal sessions

Alternatives to abtop

Unspin — Shows live progress, step names, and ETAs for coding agent shell commands instead of a spinner.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Claude Tap — Inspect prompts, tool calls, and token usage locally without a hosted dashboard.
AgentDock — Manages multiple coding agents from one screen-edge inbox without switching tabs.
pstack — Improves AI coding agent outcomes with rigorous workflows.
TUIOS — It keeps coding agents visible and manages their tasks in one place.
devpit — Control multiple coding agents in one window with side-by-side panes and cost tracking.
VoltAgent — Offers open-source flexibility with built-in supervisor agent orchestration and RAG.
Coucou — It provides open-source, real-time agent monitoring and approvals directly from the screen notch.
Agent Archive — Hand off coding sessions between Claude Code, Codex, and Cursor across machines.
Evlat: which agent is waiting on you? — Tracks multiple AI agent sessions and remote builds on one screen edge.
Raindrop Workshop — Provides real-time observability and self-healing evaluation loops for local AI agents.

All abtop alternatives