SwiftSkills vs CurlyJSON

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

SwiftSkills compared with CurlyJSON
Detail	SwiftSkills	CurlyJSON
What it does	Directory of AI agent skills, MCP servers and rules for iOS, Swift and SwiftUI development	JSON Formatter & Validator — Free, Private & Offline
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Free for all tools. Pro: $29.99 per year or $4 per month, plus tax.
Key features	137 catalog entries with public source links 48 MCP servers for Apple development Support for multiple AI agents including Claude Code, Cursor and Codex 11 categories organized by development areas Install commands copied from official sources Searchable catalog with keyword filtering Weekly newsletter of new catalog entries	Validate JSON with precise line and column errors Repair invalid JSON fixing trailing commas, quotes, and comments Preserve large integers without rounding Detect and mask API keys, tokens and passwords
What makes it different	Curated specifically for Apple platform developers All entries linked to public repositories with verified sources Includes diverse tool types: skills, MCP servers, rules, docs and SDKs	Keeps large numbers exactly as written instead of silently rounding them like most online formatters All free tools run entirely in your browser, working offline without uploading data Automatically detects and warns about secrets like API keys and passwords
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)	1 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	7
Citation Flow (Majestic)	13	13
Referring domains (Majestic)	1	2

4 details filled in for both companies.

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