Aizen
Aizen is a native Apple Silicon macOS workspace that runs agents, terminals, files, and browsers side by side per git branch.
Aizen's per-environment state is the product, not the terminal. If your day is three branches, two agents, and a PR review, the free tier already covers unlimited workspaces and worktrees, ACP agents, the MCP marketplace, and the libghostty GPU terminal, so evaluating it costs you nothing but time. The catch is hard: Apple Silicon macOS only, no real-time collaboration, no shared cloud workspaces. Compare against Cursor and Windsurf, which bundle agent chat into a full editor but do not isolate per-branch state the same way, and against plain tmux plus a terminal, which is cheaper but does no agent orchestration for you.
Verified 18h ago · liveness 78/100 · cite: rightaichoice.com/tools/aizen
- Solo macOS developers who juggle several git branches a day
- Engineers running Claude, Codex, or Gemini agents in parallel across branches
- Developers who want git diff, PR review, and CI status in the same window as the terminal
- iOS and macOS builders who want Xcode integration plus a CLI companion
- Windows or Linux developers — Aizen is Apple Silicon macOS only
- Teams needing real-time collaborative editing or shared cloud workspaces
- Anyone wanting a full IDE with deep language intelligence and automated refactoring
We scan live Reddit threads, YouTube comments, X posts, G2 reviews and other communities — and hand you an honest verdict in under a minute.
- Honest verdict, not marketing
- Real pros & cons from real users
- Attributed quotes with receipts
3 free scans · no card needed
Skip Aizen if you develop on Windows or Linux, work on a single branch at a time, or need shared real-time collaborative editing rather than a per-developer macOS workspace.
Agent usage is billed by whichever provider you connect — Claude, Codex, Gemini and others run under your own accounts, so Aizen's own price does not cover your model spend.
Free core workspace with unlimited workspaces and worktrees makes evaluation genuinely costless, and Pro at $5.99/mo or $59/yr billed annually undercuts most agent-native editors on a subscription basis — though you still pay your model provider separately. Lifetime at $179 one-time is aimed at solo Apple Silicon developers; teams needing shared or cloud workspaces are not served at any tier.
In short
Aizen — Aizen is a native Apple Silicon macOS workspace that runs agents, terminals, files, and browsers side by side per git branch. Best for Solo macOS developers who juggle several git branches a day, Engineers running Claude, Codex, or Gemini agents in parallel across branches, Developers who want git diff, PR review, and CI status in the same window as the terminal. Free to start; paid plans from $5.99/mo.
What's new in Aizen
Checked 7 days agoAcross the latest 1 update: 1 launch.
What people actually say about Aizen — is it worth it?
We scanned public community sources for Aizen on Jul 6, 2026 and could not establish that the discussion we found is about this tool rather than something else sharing its name. Our own analysis of that scan says the posts were off-subject. Rather than publish a sentiment score built on the wrong subject, we publish nothing here and re-run the scan.
Viability Score
How well maintained and how widely used is Aizen? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Separate environment per branch or project with its own terminal, files, browser, and chat
- Run Claude, Codex, OpenCode, Gemini, and other ACP agents per environment
- MCP server marketplace built into the app, configured per agent
- GPU-accelerated terminal powered by libghostty
- Terminal split panes, presets, and themes
- Optional tmux persistence so terminal sessions survive a restart
- Group active projects into workspaces
- Voice input and file attachments in agent chat
- Visual Git diff and pull request review with inline diffs
- Stage and commit without leaving the workspace
- Live GitHub Actions and GitLab CI run tracking
- Xcode integration for iOS and macOS development
- CLI companion tool
- File and web browser tabs inside each environment
- Metal-accelerated rendering for native macOS performance
About Aizen
Aizen is a native macOS workspace for parallel development, built for Apple Silicon Macs. Instead of one terminal and one agent chat, each project or branch gets its own environment holding its own terminal panes, file tabs, browser tabs, and chat history, so switching between active work does not lose state. Projects are grouped into workspaces, and you create environments for whatever branches or tasks are live right now. Agents sit at the center of each environment: you run Claude, Codex, OpenCode, Gemini, and other ACP agents directly where the work happens, and add MCP servers per agent from a marketplace built into the app. Agent chat accepts voice input and file attachments. The terminal is GPU-accelerated on libghostty with split panes, presets, themes, and optional tmux persistence so sessions survive a restart. The surrounding tooling is Git-shaped: stage, commit, read visual diffs, review pull requests with inline diffs, and keep GitHub Actions or GitLab CI runs in the same window. Xcode integration and a CLI companion cover iOS and macOS work, with Metal-accelerated rendering. Aizen is open source under GPL-3.0 and the core workspace is free forever, including unlimited workspaces and worktrees; Pro is $5.99/mo or $59/yr billed annually, and Lifetime is $179 one-time. It suits Apple Silicon developers running several agents across branches at once, and it is a focused tool rather than a general-purpose IDE.
Behind the Verdict
Aizen is a bet that the unit of work has changed. When an agent can run for minutes at a time, the thing you lose is not typing speed but context: which branch was that Claude session on, what did the Codex run already touch, where is that CI failure. Aizen answers by making the environment, not the window, the container. Each branch or project gets terminal panes, file tabs, browser tabs, and its own chat history, and you switch environments instead of reconstructing state. That is a real architectural difference from bolting an agent panel onto an existing editor. Strengths. The agent layer is genuinely multi-vendor: Claude, Codex, OpenCode, Gemini, and other ACP agents run per environment, with MCP servers configured per agent from an in-app marketplace. The terminal is not an afterthought — libghostty with GPU acceleration, split panes, presets, themes, and optional tmux persistence so a long-running session survives a restart. Git and CI live in the same window: visual diffs, staging and committing, pull request review with inline diffs, and live GitHub Actions or GitLab CI runs. Xcode integration and a CLI companion make it plausible for iOS and macOS work rather than only backend scripting. GPL-3.0 means you can read the code and the pricing is unusually light: free core workspace with unlimited workspaces and worktrees, Pro at $5.99/mo or $59/yr billed annually, Lifetime at $179. Weaknesses. Platform lock is absolute — Apple Silicon macOS only, no Windows, Linux, or mobile client. There is no real-time collaborative editing or shared cloud workspace, so teams that pair on the same session are out of scope. It is a client for ACP agents, not an agent model, so when Claude or Codex is down, that agent is down inside Aizen too. And the workspace abstraction only pays for itself if you actually work across branches; if you live on one branch, a conventional editor plus a terminal is cheaper in both dollars and attention. The honest framing: Aizen is not trying to replace your IDE, and it should not be judged as one — it has no deep language intelligence or automated refactoring story. It is the layer above: the place where several agents and several branches coexist without you going mad. Download it free, run it for a week on your messiest multi-branch day, and see whether the context preservation pays for itself. If it does, $179 lifetime is easy math. If it does not, uninstall with no loss.
Researching Aizen? Get your full AI stack in 60 seconds.
Free, no signup — tell us your goal and get tools matched to your budget & existing stack.
Real-world workflow fit
Concrete scenarios for the personas Aizen actually fits — and what changes day-one when you adopt it.
You open Aizen in the morning with three branches live. Each has its own environment with terminal panes, file tabs, and its own chat history, so you start a Codex run in one, review a pull request with inline diffs in the second, and watch a GitHub Actions run in the third.
Outcome: No window juggling and no reconstructing what each agent already touched — the state lives in the environment, and switching costs a click.
You launch Claude in one environment and OpenCode in another, each with its own MCP servers added from the in-app marketplace, and dictate a prompt by voice into the second chat while the first is still generating.
Outcome: Two agents progress on two branches at once while you keep reviewing code, and MCP configuration stays scoped to the agent that needs it.
You work an Xcode-heavy branch, using the CLI companion for scaffolding and the GPU-accelerated libghostty terminal with tmux persistence for a long build, then check the CI run for that branch without leaving the window.
Outcome: Xcode, terminal, and CI status stay in one environment per branch instead of scattered across app windows.
Use Cases
- Keep multiple project branches in isolated environments, each with its own agents, terminals, and files.
- Run Claude and Codex agents in parallel across different environments while reviewing code in another.
- Review pull requests with inline diffs, the file browser, and terminal access in a single environment.
- Track GitHub Actions or GitLab CI runs without leaving the workspace.
- Run long-running tasks in the GPU-accelerated terminal with tmux persistence.
- Add MCP servers to individual agents from the built-in marketplace.
- Dictate an agent prompt by voice or drop in a file without leaving the chat window.
- Group several active repos into one workspace and switch environments as branches come and go.
Models Under the Hood
as of 2026-10-15
Limitations
- Aizen runs only on macOS and requires Apple Silicon, so there is no Windows, Linux, or mobile client.
- Agents run per environment, so the value depends on working across branches; if you work one branch at a time the workspace layer adds overhead without returning much.
- There is no real-time collaborative editing or shared cloud workspace.
- Aizen is a client that runs ACP agents such as Claude, Codex, OpenCode, and Gemini rather than being an agent model itself, so an agent outage upstream shows up inside Aizen.
- It is a focused workspace, not a general-purpose IDE: there is no deep language intelligence or automated refactoring story here.
- The core workspace is free under GPL-3.0, with Pro and Lifetime tiers alongside it.
as of 2026-10-11
Verification history
We have re-verified Aizen 11 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
Showing the 6 most recent of 11 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Aizen tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0
Ideal for
Solo Apple Silicon developer who wants to test whether per-branch environments actually help before paying anything.
What this tier adds
Starting tier — full core workspace free forever, including unlimited workspaces and worktrees, ACP agents, MCP servers, GPU terminal with tmux persistence, file and web browser, voice input, visual Git diff, and CI tracking.
Pro
$5.99/mo or $59/yr billed annually
Ideal for
Developer who has decided Aizen is part of the daily workflow and wants to fund development plus get priority support.
What this tier adds
Adds priority support and future paid extras on top of the free tier; $5.99/mo or $59/yr billed annually, with the yearly option saving about 20% and carrying a 30-day money-back guarantee.
Lifetime
$179 one-time
Ideal for
Solo developer or small studio that wants to stop paying a subscription and lock in access permanently.
What this tier adds
One-time $179 purchase with everything in Free plus priority support forever and future paid extras, replacing the recurring Pro subscription.
Where the pricing makes sense
The company stage and team size where Aizen's pricing actually pencils out — and where peers do it cheaper.
Free core workspace with unlimited workspaces and worktrees makes evaluation genuinely costless, and Pro at $5.99/mo or $59/yr billed annually undercuts most agent-native editors on a subscription basis — though you still pay your model provider separately. Lifetime at $179 one-time is aimed at solo Apple Silicon developers; teams needing shared or cloud workspaces are not served at any tier.
Setup time & first value
How long it actually takes to get something useful out of Aizen — broken out by persona, not the marketing-page minute.
Solo macOS developer: download, sign in to your agent providers, and you can have a first environment with terminal and agent running in roughly 15-30 minutes, faster if you already have Claude or Codex configured. Teams: adding a second developer is trivial since there is no shared workspace to provision, but expect an hour or so per person to settle on a workspace and environment naming
Switching to or from Aizen
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From plain terminal plus tmux: install Aizen, point it at the same repo, and keep your tmux persistence so sessions survive as before.
- →From VS Code or Cursor: keep the editor for editing and move agent chat, PR review, and CI tracking into Aizen environments per branch.
- →From a one-agent CLI setup: add your other ACP agents per environment and let each keep its own chat history.
- ↗To a general-purpose IDE: your code and git history are untouched, so you mainly lose the per-environment agent and terminal state.
- ↗To plain terminal plus tmux: export nothing, since environments are workspace state rather than committed artifacts.
Integrations
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “Aizen”, and we withheld 6: 6 could not be judged, because “Aizen” is a single word that other videos use for other things. We are showing none, because we could not prove any of them are about Aizen.
Official links
Tools that pair well with Aizen
Common stack mates teams adopt alongside Aizen, with the specific reason each pairing earns its keep.
OpenHands
OpenHands runs autonomous coding agents triggered by GitHub, Slack, Jira, or schedules to review PRs and fix CI.
Fimo
Fimo runs autonomous website agents on your own Git repo, keeping your site self-updating after launch.
Windsurf
Devin Desktop (formerly Windsurf) is an agent-native IDE for running fleets of local and cloud coding agents from one Sessions board.
Featured Head-to-Head Comparisons
Aizen vs Locus Robotics
These tools serve completely different needs. Locus Robotics is a multi-million-dollar physical automation system for warehouses, while Aizen is a free macOS developer tool. Choose Locus if you run a high-volume warehouse; choose Aizen if you're a developer seeking a parallel workspace. There's no overlap.
Aizen vs Presto Voice
Presto Voice and Aizen serve entirely different markets. Presto Voice is a specialized drive-thru voice AI for QSR chains, recently adopted by Dairy Queen. Aizen is a macOS-native parallel development workspace for developers. Choose based on your domain: restaurant operations or software development. No direct competition.
Aizen vs Truleo
Choose Truleo if you're in law enforcement needing to connect siloed data and automate lead generation; choose Aizen if you're a macOS developer managing multiple projects and AI agents. They serve entirely different domains and use cases—only one will apply to you.
Alternatives to Aizen
View all
Frequently Asked Questions
Categories
Best-of guides
Used Aizen? Help shape our editorial sentiment research.