Two Excellent Open-Source AI Agents for Your Terminal

In the fast-moving world of AI-assisted development, the spotlight often shines on the models themselves, but it's the frameworks around them — the ones that integrate, manage, and streamline workflows — that define the user's experience and workflow. The open-source contributions to CLI agents are largely eclipsed by the proprietary versions - Claude Code, CoPilot, Codex, Cursor etc.. But there are two standout FOSS terminal-based agents I've used that I feel deserve more attention: Crush from the Charmbracelet team and OpenCode from Anomalyco (formerly SST). Interestingly, both evolved from the same early Go-based project before splitting directions in 2025. Charmbracelet carried forward the Go tradition with Crush, building both the frontend and backend entirely in Go. Powered by Charm’s elegant libraries like Bubble Tea, Crush delivers a very polished terminal-native experience — no JavaScript, no TypeScript, just clean Go engineering and minimal dependencies. The Anomalyco team to