Mobile Simulator
PulseGate's liveness check found it on 14 Sep 2026; it is registered on the Chrome Web Store and Firefox Add-ons and has been in the index since 21 Jul 2026. How this is checked
Mobile Simulator (MSIM) is a Chrome and Firefox browser extension that allows frontend developers to view and test real websites across multiple device sizes simultaneously. It provides side-by-side comparison, synchronized scrolling, device rotation, and realistic device frames directly within the browser. The tool helps catch mobile UI issues faster than traditional DevTools workflows and is used for development, QA, PR reviews, and client presentations.
Inferred · not functionally tested
Overview
5 featuresPurpose: Testing responsive website layouts across multiple device sizes and orientations without repeatedly switching Chrome DevTools.
Inferred · not functionally tested
Audience: frontend developers
Inferred · not functionally tested
Functions: Unknown
Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown
Recorded constraints: pricing: free · license: Proprietary · platforms: WEB · deployment: browser, embeddable
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: msim.app · addons.mozilla.org · chromewebstore.google.com. These links do not verify the individual claims.
In the Browser DevTools & extensions space, Mobile Simulator takes a focused approach. Inferred · not functionally tested: It focuses on testing responsive website layouts across multiple device sizes and orientations without repeatedly switching Chrome DevTools. Inferred · not functionally tested: Mobile Simulator is a consumer product aimed at frontend developers. Basis unknown · not verified: Mobile Simulator costs nothing to use. Basis unknown · not verified: It ships for the web and embeddable surfaces.
Mobile Simulator first shipped in 2026. Inferred · not functionally tested: Among its 5 catalogued features are multi-device view, sync scrolling, and device rotation.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- Multi-device view
- Sync scrolling
- Device rotation
- Responsive testing
- Device frames
Topics: Inferred · not functionally tested
Built with & integrations
- Google Cloud
- x-cloud-trace-context header
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
- Indexed21 Jul · 23:10 UTCMobile Simulator Extension MSIM: Responsive Viewer seen via Firefox Add-onsSource: Firefox Add-ons · Open
Frequently asked questions about Mobile Simulator
- What is Mobile Simulator?
- Inferred · not functionally tested: Mobile Simulator focuses on testing responsive website layouts across multiple device sizes and orientations without repeatedly switching Chrome DevTools. It is catalogued under Browser DevTools & extensions on PulseGate.
- Who is Mobile Simulator for?
- Inferred · not functionally tested: Mobile Simulator is a consumer product built for frontend developers.
- Is Mobile Simulator free?
- Basis unknown · not verified: Yes — Mobile Simulator is free to use.
- What platforms does Mobile Simulator run on?
- Basis unknown · not verified: Mobile Simulator runs on the web and embeddable surfaces.
- Is Mobile Simulator still active?
- PulseGate's liveness check found it on 14 Sep 2026.
- What projects are similar to Mobile Simulator?
- Similar projects tracked by PulseGate include MobileReady, Mobile Device Simulator, and Mobile View Simulator.MobileReadyMobile Device SimulatorMobile View Simulator
- When did Mobile Simulator launch?
- Mobile Simulator first shipped in 2026.
Similar projects
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