Real-time visibility layer for Claude Code sessions that surfaces context window usage, active tools, token consumption, and task status directly in your terminal. Turns the opaque agentic loop into a transparent, monitorable process. Particularly useful during long-running agent sessions where understanding resource consumption and progress helps you decide when to intervene, redirect, or let the agent keep working.
Claude HUD adds visibility to Claude Code sessions by displaying real-time metrics including context window usage, active tools, token consumption, and current task status. It turns the opaque agentic loop into a transparent process you can monitor.
The plugin is particularly useful during long-running agent sessions where understanding resource consumption and progress helps you make informed decisions about when to intervene, redirect, or let the agent continue working.
Free / Open Source
CLI dashboard; works alongside Claude Code
Open-source extensible AI agent by Block
Autonomous coding agent from Block (Square) that works with any LLM through MCP-first extensibility. Apache 2.0 licensed with 47K+ GitHub stars and a Linux Foundation AAIF founding project. Designed for terminal-based workflows with deep tool integration, making it a strong open-source option for developers who want agent-assisted coding without vendor lock-in.
Open-source AI agent framework with persistent memory, reusable skills, tools, and messaging gateways
Hermes Agent is an open-source AI agent framework with persistent memory, reusable skills, 40+ tools, cron jobs, and messaging gateways.
Making all software agent-native from the CLI
Universal bridge from HKUDS that makes any GUI software accessible to AI coding agents through command-line interfaces. Instead of requiring manual GUI interaction, it exposes application functionality as CLI commands agents can invoke programmatically. Addresses a core challenge in agentic development: most software targets human graphical interaction, but AI agents work best through text-based command interfaces.
Fast, native terminal emulator
GPU-accelerated terminal emulator written in Zig by Mitchell Hashimoto (HashiCorp co-founder). Native UI rendering on macOS and Linux. Supports ligatures, true color, Kitty graphics protocol, and splits/tabs. Configurable via a simple key-value file with sensible defaults. Open-source with 20K+ GitHub stars and a focus on correctness, speed, and minimal resource usage. Growing as a modern alternative to iTerm2, Alacritty, and WezTerm.
Anthropic's agentic coding CLI
Anthropic's agentic CLI coding tool that delegates complex tasks to Claude directly from the terminal. Understands entire codebases via automatic context gathering, edits multiple files, runs shell commands, and manages Git workflows autonomously. Supports CLAUDE.md for persistent project instructions, integrates with VS Code and JetBrains, and uses Claude Opus/Sonnet with extended thinking for complex architectural decisions. Built for terminal-first developers.
Minimal terminal coding harness
Pi Coding Agent is an MIT-licensed Node.js CLI from earendil-works for building and running coding agents in a local terminal. The current package describes a read/bash/edit/write toolset and session management, while the repo positions Pi as a unified LLM API, agent loop, TUI, and coding-agent CLI. It is best framed as a lean, self-extensible BYO-model toolkit rather than a managed IDE.
Open-source AI coding agent for the terminal
Open-source terminal-based AI coding agent built in Go by the SST team, with a rich TUI (Bubble Tea) supporting 75+ model providers including OpenAI, Anthropic, Gemini, Bedrock, Groq, and OpenRouter. Features vim-like editing, persistent SQLite sessions, and LSP integration for 40+ languages. Fully free with no vendor lock-in, it has rapidly grown to 95k+ GitHub stars.
OpenAI coding agent for app, editor, terminal, and cloud work
Codex is OpenAI's coding agent for software development across the Codex app, editor, terminal, and cloud tasks. It helps write, review, debug, refactor, and automate code, with ChatGPT plan access for managed surfaces and API-key usage for CLI, SDK, and IDE workflows. The open-source CLI and SDK support local repository work, while cloud features add GitHub review, Slack/Linear integrations, worktrees, skills, MCP, and automations.
Python and TypeScript framework for production multi-agent systems
BeeAI Framework is an Apache-2.0 toolkit for building production-ready AI agents and multi-agent systems in Python and TypeScript. Its docs cover agents, tools, RAG, memory, workflows, backend providers, serving, and A2A/MCP integration surfaces, making it a vendor-neutral option for teams comparing LangGraph, CrewAI, Mastra, and related agent runtimes.
