HyperFrontend vs Muster

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

HyperFrontend compared with Muster
Detail	HyperFrontend	Muster
What it does	Micro-frontend architecture framework for composing web applications	Mac menu bar app that shows which Claude Code, Codex or Cursor session needs you
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Open source	Open source
Pricing	Not given	Free
Key features	Typed host and hostee SDKs for building and embedding features CLI for initialization, building, and development with feature.config.* Dev server with debug UI for inspecting host/hostee message traffic Multiple display modes: embedded, dialog, popup, standalone Contract declaration with message validation and schema enforcement Optional encryption with v3 and v4 protocols Framework-agnostic with support for React, Vue, Angular, vanilla JS Lifecycle management with open/close and ready state handling Message broker with typed routing and validation	See which Claude Code, Codex or Cursor session needs you Allow or deny a command from an alert without switching apps See the agent's reason, the whole command or every option with Option-Down Switch to any session with Option-Tab Search sessions from the last three hours View tokens and API cost per session Native macOS AppKit interface Supports remote sessions over SSH
What makes it different	Zero runtime dependencies and self-contained feature packages require no transitive install burden Modernize without a rewrite by composing existing applications of any age Contract-based type safety with handshake validation and fail-closed security Production-ready static file server with optional encryption and message inspection	No switching required to approve requests Open source with full code transparency Privacy by default with no analytics Manage multiple sessions from one menu bar
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	2 no change since last check
Trust Flow (Majestic)	5	3
Citation Flow (Majestic)	21	18
Referring domains (Majestic)	9	24

4 details filled in for both companies.

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