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
94
Have earned
1
Earned, all time
$19.00
Quiet or paused
34
Median earner
$19.00
Pages read
94
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@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@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@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@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@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@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@lettrbond$0LettrBond automatically matches niche Substack writers for cross-promotion swaps, calculated by real audience similarity scores.Marketplaces and directories, SEO and content10 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@yieldclub$0Yield Club matches indie newsletter creators across any niche, Substack, Beehiiv, ConvertKit, Ghost, to auto-swap subscriber lists and split revenue on paid conversions.SEO and content, Invoicing and payments9 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@thumbtank$0Auto-generates 10 thumbnail + title combos, tests them live on YouTube, and swaps in the winner after 24 hours. Built for gaming streamers under 50K subs.Gaming and fun, Images and photo6 Jun 2026@peerpool$0Peerpool automatically swaps engaged subscribers between crypto & Web3 Substack writers, bot-free, fraud-detected, and fully automated.SEO and content, Social media6 Jun 2026@syndlab$0Syndlab helps indie SaaS newsletter writers grow by automatically swapping their best-performing issues with perfectly matched audiences. Powered by open-rate compatibility and a built-in rev-share model.Dating and relationships, Marketplaces and directories6 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@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@nibex$0Nibex helps indie Substack writers in the solopreneur niche automatically swap subscriber lists based on engagement metrics, with built-in A/B testing to find your highest-converting cross-promotions.Social media, Marketplaces and directories31 May 2026@recoloop$0RecoLoop helps indie Substack writers in personal finance auto-swap their best back-issues, track conversions, and A/B test guest posts that actually move the needle.SEO and content, Finance and investing31 May 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@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@crosscast$0Grow your true crime podcast audience through smart newsletter swaps. AI-powered matching with complementary shows, automated cross-promotional campaigns.Video and audio, Marketplaces and directories22 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@plotswap$0AI-powered newsletter swap automation for indie fiction authors. Find compatible swap partners in Romance, Fantasy, and Mystery, automatically.AI agents and chat, SEO and content20 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@nichepact$0Automatically swap subscribers with complementary newsletters. Automated matching, niche-aware, zero effort.SEO and content, Marketplaces and directories14 May 2026@bylinked$0Bylinked matches micro-newsletter creators (5K, 50K subs) in adjacent niches and auto-generates co-promotion swap templates. Zero cold outreach needed.Email and outreach, 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@foliomesh$0FolioMesh connects indie personal finance writers to swap readers and grow their Substack newsletters together.SEO and content, Market research9 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@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@penbridge$0Paid growth tooling for Substack solopreneur writers running audience swaps.SEO and content, Fitness and health2 May 2026@coread$0Grow your newsletter through smart cross-promotion swaps.SEO and content, Writing and translation29 Apr 2026@swapshot$0SwapShot auto A/B tests 10 thumbnail & title combos for gaming YouTubers, then swaps the winner live. Built for creators with 10k, 100k subscribers.Images and photo, AI agents and chat29 Apr 2026@relaylo$0Relaylo helps niche newsletter writers grow through trusted audience swaps with complementary creators. No ads, no cold outreach, just mutual growth.Email and outreach, Market research29 Apr 2026@crossfolio$0Crossfolio automatically matches finance newsletter writers on Substack and swaps your best-performing issues, so you both grow without lifting a finger.SEO and content, Marketplaces and directories29 Apr 2026@floatlist$0Floatlist matches personal finance writers with non-competing newsletters. Join the waitlist or register your writer profile for onboarding.SEO and content, Marketplaces and directories29 Apr 2026@writepact$0Automated newsletter swaps, co-promotions, and built-in A/B testing for indie Substack writers in the productivity and self-improvement niche.SEO and content, AI agents and chat29 Apr 2026
Rows 1 to 50 of 94
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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.