Agents Never Sleep vs flue: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Agents Never Sleep and flue — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Agents Never Sleep
Agents Never Sleep
A tiny $4.99 Mac menu bar app that keeps long-running AI agents alive with the laptop lid closed, using one three-level slider.
Key features
- Closed-Lid Operation: Keeps agents and background jobs running with the MacBook lid shut, which the built-in caffeinate command cannot do.
- Three-Level Slider: One control with Sleepy, Awake, and Never sleeps settings, so changing sleep behavior takes a single drag rather than a terminal command.
- Menu Bar Only: Lives entirely in the menu bar with no window, dock icon, or configuration screens to manage.
- Native and Tiny: A small native macOS binary rather than a wrapped web app, minimizing overhead on a machine already running agents.
- Zero Data Collection: No telemetry, analytics, or tracking; what runs on the machine stays on the machine.
- Safe Revert: Toggling back down restores normal sleep behavior, avoiding the common mistake of leaving sudo pmset -a disablesleep 1 permanently enabled.
- No-Questions Refund: A 14-day money-back guarantee with no form to fill in and no reason required.
Best for
- Overnight Agent Runs: Letting a coding agent work through a long task while the laptop is closed and put away.
- Long Builds and Tests: Preventing a multi-hour build, test suite, or data job from being interrupted mid-run by sleep.
- Mobile Working: Carrying a MacBook between rooms or offices without propping the lid open to keep a job alive.
- Model Downloads and Training: Keeping large model downloads or local fine-tuning runs going unattended.
- Avoiding pmset Mistakes: Replacing manual sudo pmset toggles that are easy to enable and easy to forget to undo.
- Remote Sessions: Keeping a Mac reachable and working for a remote session or background service while it sits closed on a desk.
f
flue
Astro
Open-source TypeScript agent harness framework for building autonomous agents and AI workflows.
Key features
- Agent Harness: A programmable TypeScript harness giving any model sessions, tools, skills, instructions, and filesystem access.
- Autonomous Agents: Build agents that keep context across conversations and events while working toward a goal.
- Workflows: Run structured automations where your code guides agent reasoning from input to finished result.
- Secure Sandboxes: Give agents an isolated environment to use tools, modify files, and complete real work safely.
- Durable Execution: Agents preserve progress and recover through failures and restarts.
- Subagents and Tools: Delegate tasks to specialized subagents and give agents typed actions for APIs and data.
- MCP and Observability: Connect tools via Model Context Protocol and monitor agents with OpenTelemetry and Braintrust.
Best for
- Building Autonomous Agents: Create Claude Code or Codex-style agents that complete open-ended tasks independently.
- Structured Workflows: Automate multi-step processes where code controls the agent's reasoning path.
- Safe Tool Use: Run agents in a secure sandbox so they can take real actions without risk to your systems.
- Local or Hosted Deployment: Run agents from the CLI during development, then deploy to a hosted runtime.
- Tool Integration: Connect agents to authenticated services through MCP servers.