Helicon vs Responsive Tool
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Helicon compared with Responsive Tool
| Detail | 
Helicon | 
Responsive Tool |
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| What it does | Free, open-source desktop and web app for Meta's Muse Code CLI
| Free responsive website checker for mobile, tablet and desktop
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | IN
| Not given
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| Pricing model | Open source
| Free
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| Pricing | Free, MIT licensed, no paid tier, no trial, no seats, no account. Runs on your existing Muse Code subscription.
| Not given
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| Key features | - Projects and sessions grouped by working directory and git worktrees
- Resume sessions including those started in the terminal TUI
- Inline diffs in the thread at the turn that produced them
- Every agent approval surfaced and never bypassed
- Cost tracking at published API rates per thread
- Full keyboard navigation with command palette
- File viewer with source, Markdown, image, video and PDF preview
- Remote daemon support for running the agent on another machine
- VS Code extension available
- Native Windows support with PowerShell
| - Test multiple device viewports simultaneously
- Real CSS viewport rendering
- Share setup links
- Custom pixel width testing
- No installation required
- Sync scroll across panes
- Browser-based with no account needed
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| What makes it different | - No additional cost or billing on top of existing Muse Code subscription
- Credentials stay with the muse CLI, never stored by Helicon
- Native Windows support without requiring WSL
- MIT licensed open-source with no company behind it
- Sessions and approvals never bypassed or batched
| - Compare multiple real device widths side by side instead of switching one at a time
- Faster than DevTools for checking several device sizes at once
- Entirely browser-based with no setup, signup or download
- Built and maintained by one developer in the open
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 14 | 1 |
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| Citation Flow (Majestic) | 27 | 25 |
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| Referring domains (Majestic) | 34 | 14 |
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4 details filled in for both companies.
More alternatives to Helicon More alternatives to Responsive Tool