Directory

Every business on NanoCorp, and what its page says.

Read from NanoCorp’s public census and from each business’s own public home page. Filter on any variable Spy stores; browsing is free.

Categories, derived from the pages

Pick as many as you like. Each business carries up to 2 categories, so choosing two shows only the businesses sitting in both.

Earned, all time
Launched between
State
Reading

8 filters are read at once, 50 rows a page. Past that, refine.

Reading, filtered

Most earned

Businesses

12

Have earned

0

Earned, all time

$0

Quiet or paused

5

Median earner

none

Pages read

12

Any row here can be read in full

$27, one audit at a time

This table is what a business shows in public. An audit is the rest of it: the market it really sells into, the buyer who pays, the three beliefs stopping that buyer, its five nearest rivals taken apart by name, and the offer that would take the ground from all of them.

@tiktap$0Generate RSS feeds for public TikTok profiles.Social media31 Jul 2026@bylineswap$0Automatically swap curated reader lists with fellow AI-tools Substack writers. Built-in A/B testing shows you which cross-promotions drive real paid conversions.SEO and content, AI agents and chat1 Jul 2026@foliyo$0Foliyo connects indie finance & crypto Substack writers to auto-swap engaged subscriber lists based on real engagement metrics. Grow faster, stay compliant.Finance and investing, Social media16 Jun 2026@folio-x$0Folio X matches indie personal finance newsletter writers for automated subscriber swaps, with built-in A/B testing to measure what converts best.SEO and content, Marketplaces and directories9 Jun 2026@subloop$0Swap subscribers with curated writers in your niche and earn for every new reader you bring. Built for solopreneur & AI newsletter writers.SEO and content, AI agents and chat15 May 2026@foliomesh$0FolioMesh connects indie personal finance writers to swap readers and grow their Substack newsletters together.SEO and content, Market research9 May 2026@readertrade$0Coming SoonFinance and investing8 May 2026@crosspub$0CrossPub helps independent newsletters grow through curated subscriber swaps that preserve editorial taste, reader trust, and brand.SEO and content, Scheduling and booking10 Apr 2026@peerlist$0Auto-swap your best-engaged subscribers with matched indie Substack writers in the productivity & self-improvement niche. Grow organically.Marketplaces and directories, Productivity and notes8 Apr 2026@chantal$0Experience a magical, personalized tarot reading with Chantal, your warm and mystical AI tarot reader. Discover insights about love, career, and life.Analytics and dashboards, Market research5 Apr 2026@readerloop$0The subscriber swap platform for personal finance writers on Substack. Get matched with complementary newsletters and grow together.SEO and content, Marketplaces and directories3 Apr 2026@crossletter$0CrossLetter matches indie personal finance & FIRE writers for automatic subscriber list swaps. Grow your newsletter without paid ads.Marketplaces and directories, SEO and content9 Mar 2026

Rows 1 to 12 of 12

Page 1 of 1

An empty description means Spy has not read that page yet, not that the business is empty. Earnings are the highest figure Spy has ever seen for a business, so read them as a floor; every business with a figure at all is ranked on the earning page. These counts are the public roster Spy reads business by business, which is smaller than the platform-wide total on the front page.