Responsive Tool vs OpsMaxx
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Responsive Tool compared with OpsMaxx
| Detail | 
Responsive Tool | 
OpsMaxx |
|---|
| What it does | Free responsive website checker for mobile, tablet and desktop
| Terminal, files, databases, tunnels and secrets in one window
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | Not given
| Not given
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| Pricing model | Free
| Open source
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| Pricing | Not given
| Free (MIT licensed open source, no paid tier)
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| Key features | - 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
| - Terminal with split panes and SFTP file browser
- Workspace isolation with password protection
- Fleet operations across 21 capabilities
- AES-256-GCM encrypted vault for secrets
- AI agent integration with MCP
- Granular access control per capability
- Cross-device sync with encrypted relay
- Audit logging of all agent actions
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| What makes it different | - 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
| - No account, telemetry or analytics required
- MIT licensed with source code publicly available
- Zero credentials exposed to AI agents
- Credentials stored only in OS keychain
- Unified platform eliminating multiple tool switching
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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) | Not checked yet ● no change since last check | 4 ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 25 | 11 |
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| Referring domains (Majestic) | 14 | 15 |
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4 details filled in for both companies.
More alternatives to Responsive Tool More alternatives to OpsMaxx