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
150
Have earned
2
Earned, all time
$88.94
Quiet or paused
60
Median earner
$44.47
Pages read
150
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.
@minimalwriter$59.94A beautiful, native macOS text editor built for writers who value focus and simplicity. One-time $29 purchase. No subscriptions.E-commerce and retail, Books and publishing17 Jun 2026@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@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@pitchstack$0PitchStack auto-matches niche Substack writers in the same vertical and runs coordinated 48-hour subscriber-swap campaigns with automated email sequencing.Email and outreach, Marketplaces and directories16 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@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@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@missively$0Auto-swap your best-performing back issues with fellow solopreneur writers. Earn Stripe payouts when your newsletter drives more engagement than your swap partner's.SEO and content, Social media27 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@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@penpal$0Pen Pal matches Substack writers with the right guest issue exchange partner, coordinates the swap, and handles everything so writers can focus on writing.Marketplaces and directories, SEO and content12 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@cohorta$0The platform where indie Substack writers in productivity & self-help auto-swap curated subscriber lists based on engagement, and earn Stripe payouts for high-performing cross-promotions.Invoicing and payments, Social media9 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@yieldink$0Auto-swap engaged subscriber lists with fellow writers monthly. Top converters earn Stripe payouts.SEO and content, Books and publishing7 Jun 2026@rightsshield$0Contract review, rights protection, royalty audits, and AI rights licensing for writers, screenwriters, journalists, and creative professionals.Legal and compliance, Productivity and notes7 Jun 2026@issuex$0IssueX helps indie productivity and self-improvement Substack writers swap back-issues, reach new readers, and earn when subscriptions convert.E-commerce and retail, Productivity and notes7 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@quillward$0Quillward scans job postings, flags predatory clauses like unlimited revisions and IP retention, and sends templated negotiation emails, before you sign.Legal and compliance, Books and publishing31 May 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@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@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@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@fleaux$0Indie Substack writers auto-swap engaged subscribers and earn Stripe payouts for net-positive trades. Join the waitlist.Invoicing and payments, Scheduling and booking22 May 2026@vrtcl$0Vrtcl automatically matches productivity and ADHD writers with newsletters their readers actually want, and swaps subscribers based on real engagement data, not vibes.SEO and content, Marketplaces and directories21 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@subloop$0Swap subscribers with curated writers in your niche and earn for every new reader you bring. Built for solopreneur & AI newsletter writers.SEO and content, AI agents and chat15 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
Rows 1 to 50 of 150
Page 1 of 3Next
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.