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MeloSkill vs Castov

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

MeloSkill compared with Castov
DetailMeloSkill logo MeloSkillCastov logo Castov
What it doesFrontend and UI skills for coding agents Fast, 100% client-side developer platform with zero-data logging
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Free
PricingNot given All tools are free with no usage limits. The site may show ads in the future to cover running costs.
Key features
  • 66 skills indexed and browsable
  • 15 frontend interface task categories
  • SKILL.md file preview on each listing
  • GitHub install commands and paths
  • Repository information and license details
  • Skill comparison guides
  • Regular GitHub refresh updates
  • Safety assessment indicators
  • Script detection in skill folders
  • Multi-timezone support with IANA database and daylight saving time
  • JSON to TypeScript conversion
  • JWT decoder and inspection
  • Cron expression parser and generator
  • End-to-end encrypted environment variable vaults
  • P2P multiplayer canvas with WebRTC and CRDT
  • Steganography for hiding encrypted secrets in images
  • Service Worker API mocker for frontend testing
  • Encrypted URL shares with hash fragment storage
What makes it different
  • Independent directory not affiliated with Anthropic, Cursor, OpenAI, or Vercel
  • Curated short lists, not a dump of every skill on GitHub
  • Read files on the site before deciding to install
  • Source files stay on GitHub, not hosted on MeloSkill
  • Operated as independent directory, not a vendor team
  • Zero-data logging: no keystroke sent to external servers, all processing in browser memory
  • 100% client-side operation works entirely offline
  • Unified ecosystem across web, CLI, and AI agents via MCP Server
  • Sub-millisecond performance with local execution
  • Tool chaining and piping for seamless multi-stage workflows
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)1 +1 (up) since last check1 +1 (up) since last check
Trust Flow (Majestic)91
Citation Flow (Majestic)2119
Referring domains (Majestic)367

4 details filled in for both companies.

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