| What it does | Fast, browser-based JSON viewer, formatter, validator and converter that runs entirely client-side
| Free Mac menu bar app that frees RAM from simulators, emulators, daemons and dev servers
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| Stage | Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: $0, with no time limit. Includes full list, stopping, Clean slate, dev server and agent rules, disk scan, CLI and MCP server. Every install includes 14 days of Pro. Pro: $19 once for 2 Macs, with every 1.x update. Adds memory warnings, simulator/emulator/daemon/sleep rules, undo, and disk clea
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| Key features | - View JSON in tree, code, and text modes
- Format and beautify unreadable JSON
- Validate JSON and catch syntax errors
- Minify JSON to reduce payload size
- Convert JSON to CSV, Excel, YAML, and XML
- Decode JWT tokens and inspect claims
- Generate UUIDs and encode or decode Base64 data
- Compare and diff JSON structures
- Sort, search and transform JSON data
- All processing runs 100% client-side in browser
| - Lists all running simulators, emulators, Gradle daemons, containers and dev servers with their RAM usage
- Stop processes using their native tools (simctl, adb, docker stop) instead of force-killing
- One-click Clean slate to free idle processes while protecting databases and active builds
- Automatic rules for dev servers, simulators, emulators and daemons (Pro)
- Disk scan showing Xcode DerivedData, old simulator runtimes, unused Android images and node_modules (Free)
- CLI and MCP server for AI agents to check running processes and free ports
- Memory pressure alerts and automatic cleanup (Pro)
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| What makes it different | - Privacy-first: all processing runs client-side with no server uploads, storage or logging
- No installation or signup required; works directly in modern web browsers
- Side-by-side input and output view for easy comparison and debugging
- Comprehensive toolset covering viewing, formatting, validation, conversion and comparison in one place
- Works on desktop and mobile browsers without any setup time
| - Stops each process type the way its own tool does (simctl, adb, docker) instead of force-killing
- Groups processes by type (simulators, emulators, daemons, containers, servers) unlike Activity Monitor which lists raw processes
- Pay once, no subscriptions or recurring charges
- Free tier includes full menu bar app with stopping and Clean slate; Pro only adds automatic rules and extras
- Never stops databases, builds in progress or system processes without confirmation
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 9 ▲ +2 (up) since last check | 14 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 7 | 0 |
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| Citation Flow (Majestic) | 30 | 0 |
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| Referring domains (Majestic) | 48 | 1 |
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JSONViewerTool
Ramback