agent-manager vs siift: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of agent-manager and siift — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

agent-manager

Yoan Wai

Free

Go TUI on top of tmux that spawns, tracks, and reviews Claude Code, Codex, Cursor, and other coding agents in one keypress.

One-keypress Spawn: Hit space on a group row, type the task, press enter — a new agent session starts immediately with the prompt embedded and the correct working directory set, without any form or naming step.
Answer In Place: On a session row, the same space key sends your reply into the agent's pane as a user message, so a blocked agent never costs you a tmux attach.
Multi-CLI Support: Tab cycles which CLI the next enter launches — claude, opencode, codex, grok, gemini, or anything you configured — so different tasks pick different agents from the same bar.
Git Worktree Spawn: alt+w spawns the agent into a fresh git worktree so parallel branches don't fight over the checkout.
Hook-based Status Detection: Six statuses (working, waiting, finished, errored, idle, dead) come from Claude Code's own hook events rather than guessing from pane output.
Foldable Project Tree: Groups are paths, not folders — backend/api/auth nests as deep as the work does, folded groups keep per-status counts, and the layout persists across restarts.
Whole-file Diff Reviewer: Review each agent's diff without leaving the list; line comments become follow-up messages to that agent.
Uses Your Local CLI As-is: Every session runs your installed CLI with your login, config, and MCP servers — nothing is re-wrapped or proxied.

Parallel Feature Work: Fan out five features across five agents in seconds and monitor them all in one folded tree without switching terminals.
Reviewing Blocked Agents: Answer a permission prompt or clarifying question directly from the list without tmux-attaching, so waiting agents never idle on you.
Multi-repo Development: Keep several projects open at once, spawn each new task into the correct project directory, and never lose track of which agent is where.
Mixed CLI Workflows: Use Claude Code for one task, Codex for another, and opencode for a third — all launched from the same TUI without switching contexts.
Diff-driven Code Review: Scan a whole-file diff, drop a line comment, and it becomes the next message to the agent, closing the review-fix loop inside the TUI.
Long-running Agent Fleets: Fold what you aren't watching, archive finished sessions, and let dozens of agents run without the terminal turning into a wall of processes.

Freemium

An agentic AI operating system that helps founders map, validate and execute business strategy on one intelligent canvas.

Intelligent Business Canvas: A visual workspace that maps ideas, assumptions, actions and results into decision-ready filters so the whole business can be seen at once.
Living Memory System: A scalable agentic memory that learns as the business evolves and keeps context aligned across tools, data and teammates.
AI-Scored Validation: Automated, continuous research that grades assumptions into evidence so founders know what is validated and what is still risky.
Five-Stage Execution Loop: Guided progression through Ideate, Validate, Build, Go To Market and Scale, each with its own AI-driven workflow.
Safe Stack Automations: Human-in-the-loop actions across 80+ popular applications so approved work executes without leaving the canvas.
Shareable Workspaces: Collaborative views that let teammates, advisors and other stakeholders work from the same strategy context.
Proactive Next-Step Guidance: Personalized, iterative advice that surfaces the highest-leverage action rather than a generic checklist.
Credit-Based AI Usage: Monthly request credits scaled by plan and weighted by task complexity, with unlimited projects even on the free tier.

Idea Validation: De-risking a new business concept by turning founder assumptions into automatically researched, scored evidence before building.
Strategy Mapping: Turning a cloud of unstructured ideas into a visual mind-map that exposes blindspots across the business model.
Go-To-Market Planning: Iterating on sales and marketing with an AI-native loop that tests which channels actually produce revenue.
Product Prioritization: Helping product leaders decide what to build next based on verified market opportunities rather than intuition.
Scaling Diagnostics: Systematizing an existing business to surface its current growth constraints and reverse-engineer fixes.
Advisor Collaboration: Sharing a single live strategy workspace with co-founders, advisors and investors instead of static decks.