Sol
Run multiple coding agents in parallel inside your browser-based IDE
If you're a Mac developer juggling multiple AI coding agents, Radius is a clever free workspace that genuinely reduces context-switching. It's early-stage, so expect rough edges, and it's macOS-only. Worth a try; Windows/Linux users should wait for support.
Verified 2d ago · liveness 75/100 · cite: rightaichoice.com/tools/sol
- Developers using multiple AI coding agents on macOS
- Teams managing several worktrees and agent sessions
- Early adopters of AI-assisted coding who want a free browser-based IDE
- Mac users who want to consolidate PRs, docs, and dashboards next to agent tabs
- Developers not using AI coding agents
- Windows or Linux users
- Teams needing full-fledged IDE features (debugging, testing, deployment)
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Skip Sol if you're not on macOS, don't use AI coding agents, or need a full IDE with debugging and deployment tools.
No hidden costs — Sol is free, but you must bring your own Claude Code, Codex, or Cursor subscription; if you don't have one, you'll need to pay for an agent plan separately.
Sol is free, which undercuts paid orchestrators like Cursor or Codex subscriptions. You pay only for your existing agent subscriptions. For Mac-based devs already using Claude Code, Codex, or Cursor, it's a no-brainer; if you need a cross-platform solution, look to Cursor or VS Code extensions.
In short
Sol — Run multiple coding agents in parallel inside your browser-based IDE. Best for Developers using multiple AI coding agents on macOS, Teams managing several worktrees and agent sessions, Early adopters of AI-assisted coding who want a free browser-based IDE. Free to use.
What people actually say about Sol — 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.
87 mentions across 8 sources (Reddit, Hacker News, YouTube, Product Hunt, Stack Overflow, GitHub, Lemmy, Tech Press) · researched Aug 3, 2026.
- +Parallel execution of Claude Code, Codex, and Cursor in tabs.
- +Built-in diff viewer and chat anchored to worktree streamline review.
- +Arc-inspired spaces help organize multiple worktrees visually.
- +Inspector lets you edit production front-ends directly from codebase.
- +Click-to-edit UI text automatically reflects changes in your code.
- −Mac-only support — no Windows or Linux yet.
- −Very limited community feedback or real-world user reviews.
- −Name conflict with an AI model makes finding genuine reviews hard.
- −Reliability and support track record is unproven.
- −Built for intermediate users — beginners may find it complex.
- • Requires a Mac — the added hardware cost.
- • May incur costs from using third-party agents like Claude Code or Cursor.
Viability Score
How well maintained and how widely used is Sol? 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: September 2026
How we score →Key Features
- Run multiple coding agents in parallel tabs
- Built-in terminal tab
- Diff viewer tab
- Chat tab anchored to worktree
- Tab groups and spaces for projects
- Radius CLI for scriptable layouts
- Visual Inspector for front-end editing
- Click-to-edit UI text
- Drag-and-drop rearrangement
- Publish visual edits to repository
- Tab splitting and reordering
- Worktree-aware context
- Local-first: sessions and agent state on your machine
- Credentials stored locally, authenticated with providers
About Sol
Radius (formerly Sol) turns your browser into an IDE where coding agents run side by side with PRs, docs, terminals, and localhost servers. If you're juggling Claude Code, Codex, and Cursor across scattered windows, Radius consolidates everything into one tabbed workspace. It's built for developers who want a familiar, browser-like UX that adapts as agents evolve. Radius is free to use—connect the agent subscription you already have, no new costs. At the core is the tab. Your agent runs in a tab, your terminal is a tab, your diff viewer is a tab. Tabs can be split, reordered, arranged, and grouped, so your context—PR reviews, planning docs, dashboards, localhost servers—sits right next to your agent's output. Create a worktree and Radius opens a new group with a chat tab anchored to it, keeping each agent session's context separate and instantly switchable. Radius is programmable. The Radius CLI provides command-line primitives—like `radius tab open`—to script how tabs are organized when you open a project or worktree. Build a workspace layout that matches your personal workflow. For front-end work, an integrated Inspector lets you visually edit production front-ends and see changes reflected in your codebase, with click-to-edit UI text and drag-and-drop rearrangement that publish straight to your repository. Radius is macOS-only (Apple Silicon and Intel), built on Chromium, and backed by Y Combinator. It's an early-stage, opinionated tool for Mac-based developers who live in multiple AI agents. Unlike full IDEs, Radius focuses on agent orchestration rather than debugging or deployment.
Behind the Verdict
Most AI coding tools want to be your only window. Radius takes the opposite bet: your browser should be the IDE, and agents are just another tab. That's a genuinely different take, and for anyone who lives in Claude Code, Codex, and Cursor at once, it solves a real pain—no more alt-tabbing between a terminal, a diff viewer, and a chat window. Pick Radius when you're on a Mac, you already pay for an agent subscription, and you want to see PRs, docs, and localhost servers next to your agent's output. The tab-and-group model is the standout: worktrees become groups, and each agent session gets its own isolated context. Power users will love the CLI—you can script a full workspace layout for a new project in one command. Pass if you're not using an AI coding agent, or if you need a full-fledged IDE with debugging and deployment. Radius is explicitly not that. And if you're on Windows or Linux, you're out of luck for now; the macOS-only limit is the biggest barrier. Compared to Cursor's built-in tabs, Radius gives you more control over layout and works with multiple agents, not just one. But it's younger—expect more rough edges and fewer features. If you already use Cursor and never touch Claude Code or Codex, you might not need Radius. A word on privacy: Radius is local-first, and agent credentials authenticate directly with providers, so keys stay on your machine. That's a real plus if you're privacy-conscious. Just remember it's free now, but early-stage tools can change pricing down the road.
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Real-world workflow fit
Concrete scenarios for the personas Sol actually fits — and what changes day-one when you adopt it.
You're fixing a bug across frontend and backend. You open a worktree in Sol, and it auto-creates a tab group with a chat tab for Claude Code, a terminal, and a diff viewer. You run Cursor Agent in another tab to cross-check the fix, and both agents can access the same localhost server you have open in a third tab.
Outcome: You fix the bug in one window without switching between apps, and can visually inspect changes via the diff viewer before committing.
You're reviewing a live production site. You use Sol's Inspector to click on a UI text element, edit it inline, and rearrange a block by dragging it. The changes are published directly to your repository as a commit.
Outcome: You ship a UI fix without opening a code editor or manually updating files.
You have several feature branches in progress. You script a setup that, when you create a worktree, opens the corresponding GitHub PR, Linear issue, docs, and localhost server as tabs in a new group. Each worktree gets its own space, keeping contexts isolated.
Outcome: You can switch between tasks instantly, with all relevant context already arranged, reducing setup time to near zero.
Use Cases
- Run Claude Code, Codex, and Cursor in parallel tabs to compare outputs on the same task.
- Use Inspector to edit a live website's UI text and see changes committed to your repo automatically.
- Organize multiple worktrees with tab groups – each worktree gets its own terminal + chat + diff view.
- Script a setup that opens a new worktree with PR, localhost, and agent tabs pre-arranged.
- Keep PR reviews, docs, and dashboards open next to agent output without switching windows.
Models Under the Hood
as of 2026-08-28
Limitations
- Sol is a browser-based IDE that runs coding agents from subscriptions like Claude Code, Codex, or Cursor Agent.
- It requires a macOS download and is not a standalone model.
- The tool is in early stages with evolving documentation and features.
as of 2026-08-26
Verification history
We have re-verified Sol 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-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-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
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 Sol 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/mo
Ideal for
Mac-based developers who already have a Claude Code, Codex, or Cursor subscription and want to orchestrate agents in parallel without extra cost.
What this tier adds
Starting tier: free forever with full access to all core features (tabs, groups, SDK, Inspector) — no paid upgrades needed.
Where the pricing makes sense
The company stage and team size where Sol's pricing actually pencils out — and where peers do it cheaper.
Sol is free, which undercuts paid orchestrators like Cursor or Codex subscriptions. You pay only for your existing agent subscriptions. For Mac-based devs already using Claude Code, Codex, or Cursor, it's a no-brainer; if you need a cross-platform solution, look to Cursor or VS Code extensions.
Setup time & first value
How long it actually takes to get something useful out of Sol — broken out by persona, not the marketing-page minute.
For existing macOS users with a Claude Code, Codex, or Cursor subscription: download, install, connect your agent, and create your first worktree in under 10 minutes. Scripting custom tab layouts via the SDK adds an hour or two of initial setup.
Switching to or from Sol
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Cursor: Import your Cursor agent subscription and continue using it inside Sol; set up worktrees with tabs instead of separate windows.
- →From Claude Code CLI: Use Sol's terminal tab to run Claude Code directly, or use the chat tab to interact with the agent in a browser context.
- ↗To Cursor: Export your worktree scripts (if any) and recreate them as Cursor tasks or command palettes.
- ↗To VS Code with extensions: Manually recreate your tab layout using VS Code's editor groups and extensions like GitLens.
Integrations
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with Sol
Common stack mates teams adopt alongside Sol, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
Sol vs Cognition Ai
For enterprise teams needing a full-cycle autonomous engineer with bug triage and legacy modernization, Devin is unmatched. For front-end developers wanting a visual editor synced to AI agents for rapid UI iteration, Sol wins. If you write code end-to-end, choose Devin; if you visually tweak production UIs, choose Sol.
Sol vs Polycam
For professionals requiring accurate 3D scanning, floor plans, and photogrammetry — like architects, forensic teams, and media creators — Polycam is the clear choice with a proven track record, rich export options, and recent UI/HDRI improvements. Sol, on the other hand, is a niche tool for front-end developers who want to visually edit production UIs synced to their codebase via AI agents; it's not for 3D work. Choose based on problem domain: physical world capture versus codebase UI editing.
Sol vs Bito
Choose Bito if you’re an engineering team grappling with multi-repo complexity and need AI agents that understand your entire system. Choose Sol if you’re a front-end developer wanting to visually edit production UIs and have changes automatically synced back to code. They serve different use cases: Bito is a system-wide context layer; Sol is a live UI editor.
Alternatives to Sol
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MarsCode
Free browser-based AI coding IDE with built-in AI assistant for faster development.
Tempo Labs
AI-powered React IDE with a visual canvas for product teams
Windsurf Editor
Agent-centric IDE for orchestrating multiple coding agents on a Sessions Board.
Frequently Asked Questions
Best-of guides
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