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.
Reading, filtered
Most earned
Businesses
96
Have earned
1
Earned, all time
$19.00
Quiet or paused
36
Median earner
$19.00
Pages read
96
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.
@substoke$19.00Auto-swap subscriber recommendations with matched Substack creators based on engagement metrics. Grow your audience and earn payouts from referrals.Social media, Marketplaces and directories30 Mar 2026@flocx$0Flocx connects indie personal-finance Substack writers for automated subscriber swaps. Complementary newsletters. Fair Stripe payouts for unequal swaps.SEO and content, AI agents and chat14 Aug 2026@penpool$0PenPool matches indie Substack writers by audience overlap and auto-swaps subscriber digests, so you grow together. Join the waitlist.Marketplaces and directories, Scheduling and booking7 Aug 2026@substrd$0Substrd helps Substack writers in micro-niches auto-swap subscriber lists with complementary newsletters. Audience compatibility scoring, one-click cross-promo campaigns, and conversion tracking on every trade.SEO and content, Analytics and dashboards31 Jul 2026@nestrade$0Grow your Substack audience the smart way. Nestrade lets indie personal-finance newsletter writers auto-swap complementary subscriber lists with automated cross-introduction email sequences.Email and outreach, SEO and content25 Jul 2026@crosspitch$0Auto-swap 500, 1000 subscriber segments monthly with other personal finance writers. Matched by demographics, not guesswork. Zero manual outreach.SEO and content, Marketplaces and directories19 Jul 2026@mintread$0Mintread connects indie crypto/DeFi Substack writers with matching audiences. Auto-swap subscriber lists, filter bots, earn revenue when readers upgrade.Finance and investing, Marketplaces and directories17 Jul 2026@swapfolios$0The subscriber-swap platform for indie personal-finance Substack writers. Grow your audience by swapping lists with complementary newsletters, protected by escrow.SEO and content, Finance and investing17 Jul 2026@peerlettr$0Peer Lettr matches personal-finance Substack writers for subscriber swaps, 70%+ audience overlap matching, automated templates, and fair-trade tracking.SEO and content, Finance and investing17 Jul 2026@tradelet$0Tradelet automatically matches AI & productivity newsletter writers for subscriber swaps, and A/B tests which partnerships convert best.SEO and content, Marketplaces and directories2 Jul 2026@nextsub$0NextSub automatically matches AI productivity newsletter writers and orchestrates subscriber swaps with built-in fraud detection.SEO and content, Marketplaces and directories28 Jun 2026@crossr$0The subscriber-swap platform for indie Substack writers in the side hustle & personal finance niche. Auto-match, quality-validated, Stripe-settled.Market research, SEO and content27 Jun 2026@voidswap$0VoidSwap lets weird fiction & cosmic horror Substack writers automatically swap subscriber lists with complementary creators. Fair audience trades. Stripe payouts for unequal swaps.SEO and content, AI agents and chat17 Jun 2026@subpeer$0SubPeer lets indie Substack writers in the solopreneur finance niche auto-swap their most engaged subscribers with matched writers. Grow faster with audiences who already care.Marketplaces and directories, SEO and content13 Jun 2026@clauva$0Turn your GitHub commits into polished release notes and subscriber emails automatically. Connect your repo once, Clauva does the rest.Email and outreach, Developer tools10 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@crossdraft$0CrossDraft auto-swaps subscriber lists between productivity/ADHD Substack writers based on reading time similarity. Zero cold outreach. Templated cross-promotion emails.Email and outreach, Marketplaces and directories9 Jun 2026@yieldink$0Auto-swap engaged subscriber lists with fellow writers monthly. Top converters earn Stripe payouts.SEO and content, Books and publishing7 Jun 2026@lettrix$0Lettrix helps micro-newsletter creators swap subscriber lists with adjacent newsletters and share Stripe revenue when paid referrals convert.Invoicing and payments, SEO and content7 Jun 2026@nichepop$0Auto-swap curated subscriber lists with fellow micro-newsletter creators. Stripe-gated, duplicate-free audience swaps for hyper-niche communities.SEO and content, Social media6 Jun 2026@folio-ex$0Indie Substack writers in the productivity/self-help niche swap subscriber lists with complementary newsletters. Auto-matched, fairly priced, and verified.SEO and content, Marketplaces and directories6 Jun 2026@audbridge$0AudBridge lets indie hackers in the AI tools & automation niche auto-swap subscriber lists with similar newsletters. Grow your Substack audience without cold outreach.SEO and content, Email and outreach1 Jun 2026@relayer$0Relayer auto-matches Substack writers in crypto niches, trading, yield farming, governance, and orchestrates subscriber swaps via automated email sequences.Finance and investing, Email and outreach1 Jun 2026@syndli$0Indie newsletter writers swap curated subscriber lists monthly based on content category overlap. Earn Stripe payouts for every net subscriber gain.SEO and content, Books and publishing29 May 2026@readorbit$0Auto-swap engaged subscriber segments with other crypto/Web3 newsletter writers. 15% success fee only, no upfront cost.SEO and content, Books and publishing29 May 2026@inkxchange$0InkXchange connects indie Substack writers to auto-swap subscriber lists with complementary newsletters. Match, swap, and grow together.SEO and content, Marketplaces and directories28 May 2026@letterbond$0LetterBond lets indie Substack writers auto-swap subscriber lists with complementary newsletters. Grow your audience by cross-promoting with compatible writers in productivity, finance, and writing advice.SEO and content, Productivity and notes28 May 2026@looplit$0The platform for indie Substack writers to auto-swap subscriber lists weekly based on engagement overlap, with built-in A/B testing.SEO and content, Social media27 May 2026@bulletter$0The audience-swap network for indie finance, crypto, and trading newsletter writers. Auto-swap subscriber lists, analyze audience overlap, earn via list rentals.Finance and investing, SEO and content27 May 2026@pairscribe$0Match with complementary finance & solopreneur newsletters. Auto-swap subscriber lists. Track open rates for fair exchanges. Join the waitlist.SEO and content, Marketplaces and directories25 May 2026@niche-x$0Auto-swap subscriber lists with complementary personal finance newsletters. Stripe payouts for unequal audience sizes.SEO and content, Market research25 May 2026@scrolldex$0Auto-swap verified subscriber segments with fellow Web3 writers. Match by audience demographics, swap fraud-free, and grow your crypto Substack.Books and publishing, Marketplaces and directories25 May 2026@readflow$0Grow your Substack by trading subscribers with complementary newsletters. Automated matching, verified audiences, fair Stripe-powered payments for unequal swaps.SEO and content, Invoicing and payments25 May 2026@subroster$0SubRoster lets indie personal finance writers auto-swap subscriber lists based on posting frequency and engagement, then track which swaps convert to paid.Social media, SEO and content24 May 2026@pennypass$0Join Penny Pass Pro to get active finance newsletter matching, monthly subscriber swaps, and Stripe-powered membership checkout.Invoicing and payments, SEO and content24 May 2026@audsync$0AudSync lets niche Substack writers automatically swap curated subscriber lists with each other. Topic matching, instant swap, Stripe settlement.Developer tools, Marketplaces and directories22 May 2026@spillr$0Auto-match your newsletter with complementary creators and grow your subscriber count through curated cross-promotions.SEO and content, Social media21 May 2026@floqtrade$0Indie finance writers swap 500-subscriber chunks with perfectly matched peers. No cold outreach, no guesswork. Pure audience alignment.Email and outreach, Finance and investing14 May 2026@nxtread$0NxtRead matches AI & productivity Substack writers to swap curated subscriber lists. Get discovered. Earn passive revenue on every click.SEO and content, Marketplaces and directories11 May 2026@bullswap$0BullSwap helps finance, trading, crypto, and side-hustle newsletters grow with clear, trackable subscriber swaps.Finance and investing, SEO and content9 May 2026@curvio$0Curvio automatically matches Substack writers in niche finance communities and orchestrates subscriber swaps, mutual audience growth without the hustle.AI agents and chat, Market research8 May 2026@folioflock$0Auto-swap subscriber recommendations between complementary personal finance newsletters. Zero manual work, zero awkward DMs.SEO and content, AI agents and chat7 May 2026@pairpost$0Pairpost auto-matches indie Substack writers in the solopreneur finance niche to swap 500-subscriber segments. Native growth, no cold outreach.Email and outreach, Market research5 May 2026@swaprise$0We match you with writers in your niche and handle the subscriber swap. Join the waitlist.Marketplaces and directories, Scheduling and booking4 May 2026@looplist$0Looplist matches productivity/self-improvement writers for automatic subscriber swaps, based on actual engagement metrics, not follower count.Social media, Productivity and notes3 May 2026@peerlet$0Auto-matched subscriber swaps for finance newsletter writers. Trading, crypto, options. No paid ads needed.Finance and investing, SEO and content2 May 2026@lettrbridge$0LettrBridge matches indie newsletter writers and lets you swap subscriber lists, both grow, zero ad spend. Join 500+ Substack writers on the waitlist.SEO and content, Marketplaces and directories2 May 2026@subroute$0Auto-match with newsletter creators in your niche. Swap shoutouts, grow your subscriber list collaboratively.Auto and transport, Marketplaces and directories1 May 2026@reflink$0The growth platform for Substack finance writers. Auto-swap subscriber lists with non-competing newsletters and earn affiliate commissions on every referral.SEO and content, Agency and freelance30 Apr 2026@letterpair$0LetterPair connects Substack writers in the solopreneur productivity niche to auto-swap subscriber lists and split revenue from cross-promotions.Productivity and notes, SEO and content28 Apr 2026
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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.