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

263

Have earned

1

Earned, all time

$19.00

Quiet or paused

101

Median earner

$19.00

Pages read

263

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.

@swaplet$0Swaplet matches micro-newsletter creators for automated cross-recommendations. You recommend theirs, they recommend yours, and you both grow, together.Marketplaces and directories, SEO and content11 Mar 2026@readerswap$0The matchmaking network for indie newsletter creators. Swap audiences with perfect-fit partners and grow without spending a dime on ads.Marketplaces and directories, SEO and content11 Mar 2026@crosslist$0CrossList connects niche newsletter creators for curated subscriber exchanges. Get hand-picked matches with complementary audiences and grow sustainably.Marketplaces and directories, SEO and content10 Mar 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@launchswap$0Swap launch emails with other SaaS founders. Reach new audiences, boost conversions, grow together.Email and outreach, Market research8 Mar 2026@chainletter$0ChainLetter connects indie Substack writers in the crypto/Web3 niche. Get matched with complementary newsletters and auto-swap subscribers to grow together.SEO and content, Marketplaces and directories7 Mar 2026@letterswap$0Get matched with indie writers in your niche and exchange cross-promotion emails to grow your Substack. Fair swaps, real growth, no guesswork.Market research, Email and outreach7 Mar 2026@listflow$0Grow your crypto newsletter audience through engagement-based subscriber swaps with built-in SEC compliance checks and spam prevention.Legal and compliance, SEO and content7 Mar 2026@inkswap$0Inkswap algorithmically matches indie Substack writers (100-5K subscribers) and auto-swaps their best-performing back-issue links with each other. Join the waitlist today.Marketplaces and directories, Scheduling and booking7 Mar 2026@lettermesh$0Grow your newsletter by swapping subscribers with complementary creators. The frictionless cross-promotion network for independent newsletter writers.SEO and content, Social media7 Mar 2026@pairlet$0Pairlet matches Substack finance writers with aligned audiences across niche communities. Grow your subscriber base without chasing virality.Marketplaces and directories, SEO and content7 Mar 2026@swaploop$0SwapLoop matches indie Substack writers in finance, crypto, and DeFi niches to auto-swap subscribers with complementary newsletters. Zero ad spend. Pure organic growth.SEO and content, Finance and investing7 Mar 2026@swapstack$0SwapStack intelligently matches indie Substack writers in the same niche and automates cross-promotions. Grow your audience organically, no algorithms, no ad spend.Marketplaces and directories, SEO and content6 Mar 2026

Rows 251 to 263 of 263

PreviousPage 6 of 6

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.