Aizen
Native macOS workspace for running AI agents, terminals, and browsers across every branch.
If you're a macOS developer running multiple agents across branches, Aizen is a genuine productivity win. The isolation and native performance feel right. But it's Apple Silicon-only and lacks collaborative features, so weigh it against cloud options like GitHub Codespaces when you need remote access.
Verified 7d ago · liveness 78/100 · cite: rightaichoice.com/tools/aizen
- macOS developers working across multiple git branches or projects simultaneously
- Engineers running multiple AI agents (Claude, Codex, Gemini) in parallel per environment
- Teams doing code review with inline diffs and direct terminal access
- Users who want a native, GPU-accelerated development environment with minimal latency
- Windows or Linux users (Apple Silicon only)
- Beginners looking for a simple text editor or all-in-one IDE
- Teams needing real-time collaborative editing or cloud workspaces
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Skip Aizen if you are on Windows or Linux, or if you need cloud-based, collaborative team workspaces — it's Apple Silicon only and has no real-time collaboration.
Upgrading to Pro or Lifetime only adds priority support and future paid extras; the core features are all free, so there's no feature paywall.
Aizen's free tier is unusually generous — full core app with unlimited workspaces, agents, and features. Pro at $59/yr is cheaper than most agent IDEs (e.g., Cursor Pro is $20/mo). Lifetime at $179 is a one-time cost that compares favorably to monthly subscriptions. Best for solo devs and small teams on macOS who want a permanent tool without recurring fees.
In short
Aizen — Native macOS workspace for running AI agents, terminals, and browsers across every branch. Best for macOS developers working across multiple git branches or projects simultaneously, Engineers running multiple AI agents (Claude, Codex, Gemini) in parallel per environment, Teams doing code review with inline diffs and direct terminal access. Free to start; paid plans from $179/mo.
What's new in Aizen
Checked 4 days agoAcross the latest 1 update: 1 launch.
What people actually say about Aizen — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
44 mentions across 4 sources (Product Hunt, Bluesky, GitHub, Lemmy) · researched Jul 6, 2026.
- +Native macOS workspace with per-project/per-branch isolation.
- +Supports multiple AI agents: Claude, Codex, Gemini via ACP.
- +Built-in MCP server marketplace for extending capabilities.
- +GPU-accelerated terminal with split panes and tmux persistence.
- +Visual Git diff and pull request review integrated.
- −Only runs on Apple Silicon Macs – no Intel support.
- −Frequent crashes when using Claude agent.
- −Chinese text input and output are garbled.
- −Agent responses often interrupt mid-sentence.
- −Very few real user reviews or community feedback.
- • Pro and Lifetime tiers currently offer vague 'future extras' – unclear value
- • Running AI agents may incur API costs (Claude, Gemini, etc.) not included
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: August 2026
How we score →Key Features
- Run Claude, Codex, Gemini, OpenCode ACP agents per environment
- MCP server marketplace built into the app
- GPU-accelerated terminal powered by libghostty
- Split panes, themes, presets in terminal
- Optional tmux persistence for terminal sessions
- Per-branch environments with terminal, files, browser, chat
- Visual Git diff and pull request review with inline diffs
- GitHub Actions and GitLab CI live tracking
- Voice input and file attachments in agent chat
- Xcode integration for iOS/macOS development
- CLI companion tool
- Metal rendering for native performance
- Open source under GPL-3.0
- Unlimited workspaces and worktrees
- Workspace and project management grouping
About Aizen
Aizen is an open-source, native macOS workspace built for parallel development. It gives each project or git branch its own isolated environment containing a GPU-accelerated terminal, file browser, web browser, and AI agent chat. You can run Claude, Codex, Gemini, and other ACP agents directly inside each environment, add MCP servers from a built-in marketplace, and keep context intact when switching between tasks. Beyond agentic-first design, Aizen integrates visual Git diff, pull request review, staging, committing, and live tracking of GitHub Actions and GitLab CI runs. The terminal is powered by libghostty with split panes, themes, presets, and optional tmux persistence for session continuity. All rendering is Metal-accelerated, giving it a native macOS feel that Electron-based tools can't match. Voice input and file attachments are supported in agent chat, and Xcode integration plus a CLI companion extend its reach for iOS/macOS developers. Aizen is free to use with unlimited workspaces and worktrees. Pro ($59/yr or $5.99/mo) and Lifetime ($179) tiers unlock priority support and future extras. The codebase is public under GPL-3.0, so it's inspectable and modifiable. Apple Silicon only. For developers juggling multiple branches and agents, Aizen replaces the sprawl of separate terminal windows, editor tabs, CI dashboards, and agent chats with one organized, per-environment stack. It's a specialized tool, not a general-purpose IDE — best for workflows that demand parallel, context-preserving work.
Behind the Verdict
Aizen is purpose-built for developers who live in the terminal and juggle multiple branches, agents, and CI pipelines simultaneously. Its core strength is the per-environment isolation: each branch gets its own terminal panes, file tabs, browser tabs, and chat history, so switching between tasks never loses context. The native macOS implementation using Metal and libghostty gives a snappy, GPU-accelerated terminal that Electron-based rivals like GitHub Codespaces or VS Code Remote can't match. Running Claude, Codex, and Gemini agents side by side in separate environments is a concrete workflow boost — you can watch one agent refactor while you review another's PR, all without tab chaos. However, Aizen is not for everyone. It's strictly Apple Silicon macOS, so Windows/Linux teams are out. It also lacks real-time collaborative editing and cloud workspaces — if you need to spin up a shared environment from anywhere, GitHub Codespaces is the better fit. The free tier is generous (unlimited workspaces, agents, and features), but Pro and Lifetime mainly add priority support and future extras, not new capabilities. For solo developers or small macOS-centric teams doing heavy branch work, Aizen is a compelling open-source alternative to juggling multiple tools. For teams needing remote access or collaborative editing, look elsewhere.
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Real-world workflow fit
Concrete scenarios for the personas Aizen actually fits — and what changes day-one when you adopt it.
You have multiple feature branches and want to run Claude on one while you review code in another.
Outcome: Create separate environments for each branch, launch Claude in one, review PRs in another with inline diffs — all without losing context.
You need to test Xcode builds while keeping an eye on CI.
Outcome: Use Xcode integration to build, run, and debug while tracking GitHub Actions in the same workspace, keeping everything visible.
You want to inspect and modify the tool itself.
Outcome: Clone the GPL-3.0 codebase and run agents locally to help understand and customize the workspace.
Use Cases
- Manage multiple project branches in isolated environments with their 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, file browser, and terminal access all in one environment.
- Track GitHub Actions or GitLab CI runs without leaving the workspace.
- Use the GPU-accelerated terminal with tmux persistence for long-running tasks.
- Add MCP servers to agents from the built-in marketplace to extend capabilities.
Models Under the Hood
as of 2026-08-21
Limitations
- Aizen is exclusively for macOS and requires Apple Silicon, so it is not available on other operating systems or mobile devices.
- The app is open source under GPL-3.0, and while the core workspace is free forever, some features may be reserved for paid Pro or Lifetime plans, though the specifics are not detailed in the provided documentation.
as of 2026-08-10
Verification history
We have re-verified Aizen 6 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-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
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 developers and small teams who want the full core workspace without paying — includes unlimited workspaces, agents, and features.
What this tier adds
Starting tier — free forever with unlimited workspaces, ACP agents, GPU terminal, file/web browser, voice input, Git review, and CI tracking.
Pro
$59/yr or $5.99/mo
Ideal for
Developers who want to fund ongoing development and get priority support, with a 30-day money-back guarantee on yearly.
What this tier adds
Adds priority support and future paid extras over Free; monthly at $5.99/mo or yearly at $59/yr.
Lifetime
$179
Ideal for
Long-term users who want one-time payment and permanent priority support without recurring fees.
What this tier adds
One-time $179 purchase adds priority support forever and future paid extras, compared to Pro's recurring 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.
Aizen's free tier is unusually generous — full core app with unlimited workspaces, agents, and features. Pro at $59/yr is cheaper than most agent IDEs (e.g., Cursor Pro is $20/mo). Lifetime at $179 is a one-time cost that compares favorably to monthly subscriptions. Best for solo devs and small teams on macOS who want a permanent tool without recurring fees.
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.
Download and install the dmg on your Apple Silicon Mac; you can create your first environment and launch an agent within 10 minutes. CLI companion and Xcode integration may require a few extra minutes to configure.
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 multiple terminal windows: Create a workspace and import your projects; each branch becomes an environment with file browser, terminal, and agent access.
- →From GitHub Codespaces: If you're on macOS and don't need remote access, clone your repos locally and use Aizen's per-branch environments for a native, low-latency setup.
- ↗To GitHub Codespaces: For cloud-based or collaborative work, migrate your workflows to Codespaces and keep using Aizen locally for quick tasks.
Integrations
Resources & Guides
Official links
Tools that pair well with Aizen
Common stack mates teams adopt alongside Aizen, with the specific reason each pairing earns its keep.
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
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Cosmos: agent orchestration platform for running AI coding agents across the full SDLC
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