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NpmStars vs Seedfast

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

NpmStars compared with Seedfast
Detail NpmStars Seedfast
What it doesCompare npm downloads and GitHub stars in one unified platform Synthetic test data generator for PostgreSQL that reads your live schema and generates realistic data without production data
StageStartup Startup
Founded2024 2025
Based inNot given SK
Pricing modelFree Freemium
PricingNot given Free plan: $5 of monthly credits ($10 with work email), around 8 seeding runs per month on a 30-table schema. Basic plan: $16/month with $32 of monthly credits (2x payment), around 50 runs per month. Premium plan: $69/month with $180 of monthly credits (2.6x payment), around 300 runs per month, prio
Key features
  • Compare npm downloads and GitHub stars side-by-side
  • Compare multiple packages simultaneously
  • Synchronized graphs for trends visualization
  • Generate shareable images and links
  • Per-package metrics panel with essential data
  • Autocomplete for package name search
  • Real-time data updates
  • Package metadata including forks and contributors
  • Mobile-responsive design
  • Reads live database schema to generate coherent test data automatically
  • Generates realistic data at scale from hundreds to tens of millions of rows
  • Maintains foreign key integrity and constraint satisfaction
  • Generates localized data with culturally appropriate names and formats
  • Works as CLI, MCP server for AI editors, and CI/CD pipeline step
  • Handles complex schemas with composite keys and multi-level dependencies
  • Plan preview shows exactly what will be seeded before writing any rows
  • Never requires access to production databases
  • Generates data with realistic distributions across columns and tables
  • Most runs complete in under three minutes
What makes it different
  • Unified platform combining npm and GitHub metrics in one place
  • No login or account required
  • Built with modern web technologies for fast performance
  • No production data exposure: generates all test data from schema alone, eliminating privacy and compliance risks
  • Schema-aware generation creates coherent, relational data without manual seed scripts
  • Integrated with AI editors through MCP server for seamless developer workflow
  • Realistic data that surfaces real bugs, not random placeholder values
  • Works at any scale with consistent data integrity from dozens to tens of millions of rows
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)17 +1 (up) since last check8 −19 (down) since last check
Trust Flow (Majestic)627
Citation Flow (Majestic)1832
Referring domains (Majestic)3162

6 details filled in for both companies.

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