# NicheIndex

> NicheIndex is a newsletter market intelligence platform that indexes 16,497 newsletters across 27 categories and 326 niches. It covers Substack, Ghost, Beehiiv, and other platforms. It provides real subscriber data, growth signals, competitive positioning, and market gap analysis, updated daily from real data, not AI-generated estimates.

- Data is sourced from public endpoints and RSS feeds, updated daily
- Subscriber counts, growth trends, and behavioral signals are based on real snapshots
- NicheIndex tracks momentum (Growing/Steady/Slowing), posting activity, and content depth
- Free newsletter discovery is available at /discover
- Paid intelligence includes niche breakdowns, competitive positioning, and growth trends

## Docs

- [Browse Newsletters](https://nicheindex.co/discover): Free newsletter discovery across all indexed categories
- [About NicheIndex](https://nicheindex.co/about): How and why NicheIndex was built
- [Methodology](https://nicheindex.co/methodology): How newsletters are scored and ranked
- [Pricing](https://nicheindex.co/pricing): Full market intelligence access

## Categories

- [Best Art & Illustration Newsletters](https://nicheindex.co/discover/arts): 690 newsletters tracked
- [Best Business Newsletters](https://nicheindex.co/discover/business): 790 newsletters tracked
- [Best Climate & Environment Newsletters](https://nicheindex.co/discover/environment): 870 newsletters tracked
- [Best Comics Newsletters](https://nicheindex.co/discover/comics): 413 newsletters tracked
- [Best Crypto Newsletters](https://nicheindex.co/discover/crypto-web3): 490 newsletters tracked
- [Best Culture Newsletters](https://nicheindex.co/discover/culture): 590 newsletters tracked
- [Best Design Newsletters](https://nicheindex.co/discover/design): 757 newsletters tracked
- [Best Education Newsletters](https://nicheindex.co/discover/education): 657 newsletters tracked
- [Best Faith & Spirituality Newsletters](https://nicheindex.co/discover/faith-spirituality): 486 newsletters tracked
- [Best Fashion & Beauty Newsletters](https://nicheindex.co/discover/fashion-beauty): 492 newsletters tracked
- [Best Fiction Newsletters](https://nicheindex.co/discover/fiction): 553 newsletters tracked
- [Best Finance Newsletters](https://nicheindex.co/discover/finance): 575 newsletters tracked
- [Best Food & Drink Newsletters](https://nicheindex.co/discover/food-drink): 475 newsletters tracked
- [Best Global Politics Newsletters](https://nicheindex.co/discover/global-politics): 655 newsletters tracked
- [Best Health & Wellness Newsletters](https://nicheindex.co/discover/health-wellness): 620 newsletters tracked
- [Best History Newsletters](https://nicheindex.co/discover/history): 750 newsletters tracked
- [Best Humor Newsletters](https://nicheindex.co/discover/humor): 491 newsletters tracked
- [Best Literature Newsletters](https://nicheindex.co/discover/writing): 729 newsletters tracked
- [Best Music Newsletters](https://nicheindex.co/discover/music): 748 newsletters tracked
- [Best News Newsletters](https://nicheindex.co/discover/law): 565 newsletters tracked
- [Best Parenting Newsletters](https://nicheindex.co/discover/parenting): 559 newsletters tracked
- [Best Philosophy Newsletters](https://nicheindex.co/discover/philosophy): 400 newsletters tracked
- [Best Science Newsletters](https://nicheindex.co/discover/science): 489 newsletters tracked
- [Best Sports Newsletters](https://nicheindex.co/discover/sports): 674 newsletters tracked
- [Best Technology Newsletters](https://nicheindex.co/discover/technology): 759 newsletters tracked
- [Best Travel Newsletters](https://nicheindex.co/discover/travel): 826 newsletters tracked
- [Best U.S. Politics Newsletters](https://nicheindex.co/discover/politics): 748 newsletters tracked

## Resources

- [What to Charge for a Newsletter](https://nicheindex.co/what-to-charge-substack): Pricing data and benchmarks
- [How to Monetize a Newsletter](https://nicheindex.co/how-to-monetize-substack): Monetization analysis
- [Newsletter Pricing Benchmarks](https://nicheindex.co/substack-pricing-benchmarks): Price distribution data
- [Niche Research Guide](https://nicheindex.co/substack-niche-research): How to find underserved niches

## Optional

- [Full Dataset (llms-full.txt)](https://nicheindex.co/llms-full.txt): Complete machine-readable dataset with all 27 niches, opportunity scores, pricing benchmarks, and niche taxonomy