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Muster vs BracketView

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

Muster compared with BracketView
DetailMuster logo MusterBracketView logo BracketView
What it doesMac menu bar app that shows which Claude Code, Codex or Cursor session needs you Privacy-first JSON workspace for viewing, formatting, validating, and querying API data
StageNot given Startup
FoundedNot given 2025
Based inNot given Not given
Pricing modelOpen source Freemium
PricingFree Free: $0 forever with JSON viewer, formatter, validator, tree, graph, node, table, JSONPath, JQ, diff, schema tools, 5 MB uploads, 20 AI actions per month, and 5 encrypted snapshots with 10 minute expiry. Monthly: $3 per month with 50 MB uploads, unlimited snapshot links up to 2 hours expiry, unlimi
Key features
  • 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
  • Real-time JSON validator
  • JQ and JSONPath query support
  • JSON diff and comparison
  • AI JSON fixer for malformed data
  • Performance Mode for files up to 50 MB
  • Nine UI languages including English, Chinese, Japanese, Korean, Portuguese, Spanish, French, German, and Russian
  • Webhook Tester with request capture and response mocking
What makes it different
  • 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
  • Privacy-first design with all core tools running client-side in your browser
  • Unified workspace replacing multiple single-purpose tools for JSON work and API debugging
  • No data selling with optional encryption for cloud features
  • Affordable Pro plan at $3/month or $27/year with unlimited AI and larger uploads
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)2 no change since last check4 +1 (up) since last check
Trust Flow (Majestic)32
Citation Flow (Majestic)1821
Referring domains (Majestic)2434

5 details filled in for both companies.

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