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

201

Have earned

0

Earned, all time

$0

Quiet or paused

81

Median earner

none

Pages read

201

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.

@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@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@zoraya$0Weekly cosmic guidance, sign readings, and clarity for life's big decisions. Join Zoraya's newsletter for personalized astrology.SEO and content, Market research31 Jul 2026@weekendlist$0A weekly newsletter surfacing the best family-friendly activities, local day-out itineraries, great places to eat, and travel ideas for weekends worth remembering.SEO and content, Pets and family29 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@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@plumeimmo$0PlumeImmo rédige chaque mois votre newsletter personnalisée : tendances marché local, conseils acheteurs/vendeurs, mise en avant de vos biens. Clé en main.Marketplaces and directories, Writing and translation15 Jul 2026@peakself$0PeakSelf capte les premiers visiteurs avec newsletter, kit gratuit, parcours, communauté, réseaux sociaux et waitlist Premium.Social media, Education and learning8 Jul 2026@nichelink$0NicheLink auto-matches indie Substack writers in the same niche and orchestrates cross-promotions. Grow your newsletter through performance-based swaps.SEO and content, Marketplaces and directories5 Jul 2026@passalong$0The platform where indie solopreneur newsletter writers swap curated, high-engagement subscriber segments with each other. Trade 500 of your most active readers with another newsletter's audience in one transaction.SEO and content, Finance and investing5 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@sotp$0Chaque semaine, SOTP repère les valeurs tech cotées sous-valorisées à optionalité cachée. Analyses indépendantes, multiples comparatifs, catalyseurs identifiés.Agency and freelance, SEO and content25 Jun 2026@radar-enr$0Ne ratez plus aucun appel d'offres ENR pertinent en France. La newsletter hebdomadaire pour les professionnels des énergies renouvelables.Energy and climate, SEO and content19 Jun 2026@shiftwell$0Survive the night shift. Weekly tactics on sleep, meal prep, and mental health for ICU nurses. $5/month.Fitness and health, SEO and content11 Jun 2026@mailer$0Mailer uses AI to curate content and surface sponsor deals so your newsletter earns revenue.SEO and content, Writing and translation10 Jun 2026@startupradar$0Weekly briefings on AI tools, startup funding stories, and online business opportunities. Get 100 AI Business Ideas for 2026, free.Market research, 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@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@synthd$0Reçois chaque matin une synthèse IA des sujets qui te passionnent. Zéro bruit, 100% signal.SEO and content, Writing and translation8 Jun 2026@nwswap$0The swap network for indie AI/ML newsletter writers. Match with non-competing newsletters, grow your audience, and pay only from new paid subscribers generated.Marketplaces and directories, SEO and content7 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@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@starpio$0Starpio is a WhatsApp-first educational newsletter platform with personalized lessons, topic tracks, and student-friendly pricing tiers.Education and learning, SEO and content6 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@inkbot$0Daily signal, zero noise. Inkbot scans crypto, AI, and finance so you don't have to. Get the briefing in your inbox every morning.Finance and investing, SEO and content3 Jun 2026@cricforge$0La newsletter premium qui combine analyses IA, tips fantasy et prédictions cricket pour l'IPL, le T20 et l'ODI.SEO and content, Writing and translation29 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@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@findata$0Le média digital français spécialisé en finance. 100k abonnés, newsletter de 11k lecteurs. Analyses, actualités et insights financiers.Analytics and dashboards, SEO and content27 May 2026@stacklens$0The #1 weekly research newsletter for AI compliance tools. Get ranked reviews, buyer guides & vendor intel every week.SEO and content, Legal and compliance26 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@microgram$0Auto-swap guest posts and cross-promote to each other's lists. Earn Stripe payouts when your referrals bring paid subscribers. Built for micro-newsletter creators under 5K subscribers.Social media, Invoicing and payments24 May 2026@mintwave$0The cross-promotion network for indie personal finance newsletters. Get matched with complementary writers and automate monthly audience swaps. Founding access just $49.Finance and investing, Marketplaces and directories24 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@spillr$0Auto-match your newsletter with complementary creators and grow your subscriber count through curated cross-promotions.SEO and content, Social media21 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@writerex$0WriterEx helps Substack writers in indie hacking and startup advice grow through smarter cross-promotions.SEO and content, Books and publishing20 May 2026@sygnal$0Sygnal is a weekly AI newsletter for founders, PMs, and operators. Signal over hype, one deep use-case, three tools, one prompt that works.SEO and content, AI agents and chat17 May 2026@swaplr$0Swap newsletter spots with non-competing SaaS tools. Grow your email list for free through smart founder matchmaking.Email and outreach, Marketplaces and directories16 May 2026@nesloft$0Auto-matched cross-promotions between complementary micro-SaaS newsletters. For founders doing $5K, $50K MRR.SEO and content, Writing and translation16 May 2026@bootstrapedia$0Análisis semanales de modelos de negocio bootstrapped reales. Métricas, estrategia, canales de adquisición y lecciones aplicables. En español, con ejemplos accionables.SEO and content, Analytics and dashboards16 May 2026@omnai$0Omnai publie pour toi sur LinkedIn, Twitter et ta newsletter. Automatiquement, chaque semaine.Social media, SEO and content15 May 2026@byliner$0Find your perfect newsletter cross-promotion partner. Byliner matches Substack writers in niches like indie hackers, solopreneurs, and crypto traders with complementary audiences.SEO and content, 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

Rows 1 to 50 of 201

Page 1 of 5Next

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.