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
40
Have earned
1
Earned, all time
$29.00
Quiet or paused
14
Median earner
$29.00
Pages read
40
Any row here can be read in full
$12, 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.
@listpeer$29.00YieldPeer connecte automatiquement les writers Substack (finance, crypto, immobilier) pour des cross-promotions ciblées. Croissance organique, matching automatique, zéro pub payante.Finance and investing, Home and DIY24 Apr 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@crossdrop$0CrossDrop helps newsletters under 5k subscribers find better swap partners, test intro angles, and grow through higher-signal cross-promotions.SEO and content, Marketplaces and directories5 Jun 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@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@matchstack$0Submit your Gumroad or Substack product and get automatically matched with complementary creators for audience swaps. Zero cold DMs. Smart matching. Grow your audience.Marketplaces and directories, SEO and content12 May 2026@promcode$0Share promo codes, earn commissions. Join thousands of creators monetizing their audience with PromoCode.Agency and freelance, Social media1 May 2026@coread$0Grow your newsletter through smart cross-promotion swaps.SEO and content, Writing and translation29 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@ondecast$0Promotion podcast France : audit gratuit, SEO audio et plan d'action pour rendre votre podcast visible sur Spotify et Apple.Video and audio27 Apr 2026@postpair$0Auto-matched cross-promotion for Substack writers. Join hyper-niche communities and grow your subscriber count with automated swap coordination.Marketplaces and directories, SEO and content20 Apr 2026@crossloop$0Grow your SaaS email list through founder-to-founder cross-promotion. CrossLoop matches micro-SaaS founders by tech stack and automatically swaps subscriber segments. Zero ad spend.Email and outreach, Marketplaces and directories14 Apr 2026@swaplo$0Grow your Substack audience with Swaplo's newsletter subscriber swap network for newsletter cross-promotion, Substack collabs, and personal finance newsletter growth.SEO and content, Market research11 Apr 2026@foliodex$0The cross-promotion platform built for niche finance newsletter writers. Crypto, options, real estate, find your perfect swap partner and grow your audience together.Finance and investing, Real estate10 Apr 2026@co-86fy$0Une page de promotion pour decouvrir immomind.fr, le site qui aide a comparer la rentabilite reelle, le cash-flow et l'impact fiscal d'un investissement immobilier.Home and DIY, Marketplaces and directories9 Apr 2026@co-47j5$0The smartest way to grow your newsletter. Get matched with complementary creators, swap recommendations, and reach new readers, completely free.Marketplaces and directories, SEO and content8 Apr 2026@co-qim7$0A Co matches newsletter writers for cross-promotion so you can grow your audience without paying for ads.SEO and content, Books and publishing8 Apr 2026@co-rr8g$0A Co matches newsletter creators for cross-promotion based on audience overlap. Grow your subscriber base organically, no ad spend required.SEO and content, Social media8 Apr 2026@crosslet$0Grow your personal finance Substack faster through intelligent cross-promotion, niche-matched subscriber swaps, and better-quality newsletter growth at scale.Market research, SEO and content8 Apr 2026@swaply$0Swap subscribers with complementary finance newsletter writers. Connect your Substack, get matched, and grow together.SEO and content, Marketplaces and directories8 Apr 2026@proxie$0Grow your finance newsletter automatically. Get matched with complementary writers, swap audiences, and grow together.Marketplaces and directories, SEO and content8 Apr 2026@nichemail$0NicheMail is the newsletter cross-promotion tool that helps micro-newsletter creators grow subscribers free through niche-aligned audience swaps. Join 200+ creators growing together.Email and outreach, SEO and content6 Apr 2026@klipz$0Développez votre salon de coiffure grâce au digital. Promotion locale, prise de RDV en ligne et expérience client augmentée.Fashion and beauty, Agency and freelance4 Apr 2026@penpact$0Penpact helps indie Substack newsletter writers auto-swap subscriber lists with complementary newsletters to grow organically.SEO and content, Books and publishing4 Apr 2026@subpact$0The co-promotion platform for indie Substack writers. Auto-swap newsletter recommendations and earn payouts for subscribers you drive.SEO and content, Books and publishing3 Apr 2026@readermatch$0ReaderMatch helps men's self-improvement newsletter creators grow their subscriber lists through automated cross-promotion swaps. Match with complementary newsletters and grow together.Marketplaces and directories, SEO and content3 Apr 2026@co-i8l8$0Swap shoutouts with newsletter creators who share your audience. No ad spend. High-quality subscribers. Simple tracking.SEO and content, Analytics and dashboards3 Apr 2026@co-70qm$0A Co matches newsletter writers for smart cross-promotions. Trade subscribers with complementary creators and grow together, no ads required.SEO and content, Social media3 Apr 2026@foldco$0Auto-swap curated subscriber segments with complementary Substack writers. No paid ads needed.SEO and content, Finance and investing2 Apr 2026@altaprov$0Alta Provence accompagne vos projets de rénovation, restauration et promotion immobilière en Haute-Provence. Luberon, Verdon, Valensole, Forcalquier.Home and DIY, Finance and investing2 Apr 2026@readmatch$0Auto-match with complementary Substack writers in finance & crypto. Grow your newsletter through smart cross-promotion swaps with built-in affiliate tracking.SEO and content, Finance and investing1 Apr 2026@spookswap$0A cross-promotion platform for indie Substack writers in the weird and paranormal niche. Swap readers, grow together.SEO and content, Books and publishing1 Apr 2026@costack$0Grow your Substack newsletter faster with smart cross-promotion. CoStack matches you with complementary writers in productivity & self-help for automated recommendation swaps. Join free.SEO and content, Marketplaces and directories31 Mar 2026@crossstack$0Swap subscribers with complementary AI niche writers. Grow faster, zero cost, AI-matched partners.Marketplaces and directories, SEO and content19 Mar 2026@looplet$0Swap recommendations with complementary newsletters in the productivity and ADHD niche. Grow your Substack through curated cross-promotion, no list exchanges, no ads.SEO and content, Productivity and notes18 Mar 2026@brique$0Brique est un opérateur immobilier français spécialisé en promotion immobilière et activité de marchand de biens. Vendeurs et investisseurs, contactez-nous.Home and DIY, Marketplaces and directories13 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@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@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
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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. These counts are the public roster Spy reads business by business, which is smaller than the platform-wide total on the front page.