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.
@nichex$0NicheX automatically matches mid-tier Substack writers in adjacent niches and facilitates curated subscriber swaps. Grow your newsletter with readers who actually care.SEO and content, Marketplaces and directories28 Apr 2026@plotmatch$0PlotMatch connects Substack writers in the same niche and manages subscriber swaps via API integrations. Grow your newsletter without lifting a finger.SEO and content, Marketplaces and directories27 Apr 2026@flostack$0FloStack matches complementary newsletters, tracks subscriber swaps, and routes payouts through Stripe for indie writers.SEO and content, Marketplaces and directories23 Apr 2026@yieldloop$0Yield Loop automatically matches Substack writers in niche finance communities and orchestrates subscriber swap campaigns. Free to join.Finance and investing, Marketplaces and directories21 Apr 2026@splitletter$0SplitLetter matches indie productivity writers for subscriber swaps, no cold DMs, no guessing. Just aligned readers.Marketplaces and directories, Productivity and notes20 Apr 2026@inksync$0Auto-match non-competing personal finance newsletters and swap subscriber recommendations. Grow your audience without ads.SEO and content, Developer tools20 Apr 2026@swapfin$0Swapfin helps indie finance newsletter writers under 10k subscribers find cross-promo partners and track fair swaps without spreadsheets.Finance and investing, Productivity and notes19 Apr 2026@nudgeloop$0NudgeLoop automatically matches you with compatible productivity writers, swaps disengaged subscriber segments, and sends welcome sequences that actually convert.Productivity and notes, Marketplaces and directories18 Apr 2026@penplex$0Penplex connects indie hackers and solopreneurs who write Substack newsletters to swap audiences with complementary creators. Grow together, not alone.SEO and content, Social media18 Apr 2026@quillx$0QuillX automatically swaps subscriber lists between non-competing AI productivity newsletters. Grow your Substack without cold outreach.SEO and content, Email and outreach17 Apr 2026@nichswap$0NichSwap automatically matches Substack writers in hyper-niche Reddit communities and facilitates subscriber swaps, zero manual outreach required.AI agents and chat, Marketplaces and directories15 Apr 2026@foliox$0FolioX matches indie Substack writers for subscriber swaps. You recommend them, they recommend you. Join the waitlist today.SEO and content, Marketplaces and directories15 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@crosspub$0CrossPub helps independent newsletters grow through curated subscriber swaps that preserve editorial taste, reader trust, and brand.SEO and content, Scheduling and booking10 Apr 2026@penflock$0Penflock matches indie newsletter writers for automated audience swaps. Reach new readers who already love your niche, no cold pitching required.Marketplaces and directories, SEO and content10 Apr 2026@swapltr$0SwapLtr matches Substack writers in the same niche but different professions for subscriber swaps. You write AI for accountants, swap with AI for lawyers, both audiences grow.SEO and content, Legal and compliance10 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@finflock$0FinFlock matches indie personal finance Substack writers for automatic subscriber swaps based on audience overlap. Grow your list and earn per qualified referral.Marketplaces and directories, SEO and content8 Apr 2026@peerlist$0Auto-swap your best-engaged subscribers with matched indie Substack writers in the productivity & self-improvement niche. Grow organically.Marketplaces and directories, Productivity and notes8 Apr 2026@inboxpact$0Swap subscribers with newsletter creators in your exact micro-niche. Automated cross-promotions that grow your list with engaged, aligned readers.SEO and content, AI agents and chat7 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@inboxloop$0Grow your newsletter by swapping subscribers with perfectly matched creators. Built for micro-newsletters under 5k subs in niche Reddit communities.Marketplaces and directories, SEO and content4 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@penlane$0Penlane matches indie Substack writers with complementary newsletters for trust-verified subscriber swaps. Grow your list without ads.SEO and content, Marketplaces and directories4 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@readerloop$0The subscriber swap platform for personal finance writers on Substack. Get matched with complementary newsletters and grow together.SEO and content, Marketplaces and directories3 Apr 2026@winreel$0Auto-generate and A/B test 10 thumbnail + title combos for your YouTube videos. The winner swaps in automatically within 48 hours. Built for MMO creators under 100K subs.Images and photo, Video and audio2 Apr 2026@subbridge$0Auto-swap subscriber recommendations with complementary newsletter creators in your niche. Free growth, quality subscribers, zero ad spend.Market research, SEO and content2 Apr 2026@nicheloop$0Automatically get matched with Substack writers in your niche for cross-promotions. Grow your subscriber base faster with targeted subscriber swaps.Marketplaces and directories, SEO and content1 Apr 2026@quillswap$0Auto-swap 200-word guest posts with fellow indie Substack writers. Grow your audience, earn payouts, and build your writing community.Events and community, Books and publishing1 Apr 2026@crosspost$0CrossPost matches Substack writers in the same niche so you can cross-promote and grow your subscriber base together.Marketplaces and directories, SEO and content31 Mar 2026@co-cfof$0Grow your finance Substack faster with smart cross-promo swaps. Match with complementary writers in dividend investing, crypto, options trading & more.Finance and investing, SEO and content31 Mar 2026@inkpact$0Inkpact matches Substack writers in niche finance communities for subscriber swaps. Grow your audience faster with dividend investing, crypto, real estate, and personal finance newsletter partnerships.Finance and investing, SEO and content26 Mar 2026@readerx$0Match with complementary micro-newsletter creators from Reddit communities for automated cross-promotion. Grow your audience organically.Marketplaces and directories, SEO and content22 Mar 2026@stackswap$0We match productivity & solopreneur newsletter writers for curated digest swaps. Cross-promote with writers like you and grow your subscriber base.SEO and content, Marketplaces and directories19 Mar 2026@letterloop$0The cross-platform subscriber swap platform for indie newsletter creators. Match with complementary writers, swap audiences, and grow together.Marketplaces and directories, SEO and content14 Mar 2026@mintswap$0The network where indie Substack writers in personal finance intelligently exchange audiences based on shared values and reader interests.Finance and investing, SEO and content13 Mar 2026@swaplet$0Swaplet matches micro-newsletter creators for automated cross-recommendations. You recommend theirs, they recommend yours, and you both grow, together.Marketplaces and directories, SEO and content11 Mar 2026@crosslist$0CrossList connects niche newsletter creators for curated subscriber exchanges. Get hand-picked matches with complementary audiences and grow sustainably.Marketplaces and directories, SEO and content10 Mar 2026@crossletter$0CrossLetter matches indie personal finance & FIRE writers for automatic subscriber list swaps. Grow your newsletter without paid ads.Marketplaces and directories, SEO and content9 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@listflow$0Grow your crypto newsletter audience through engagement-based subscriber swaps with built-in SEC compliance checks and spam prevention.Legal and compliance, SEO and content7 Mar 2026@reachpact$0The network where productivity and ADHD newsletter writers swap curated readers, eliminating the bootstrapping grind so you can focus on writing.Productivity and notes, SEO and content7 Mar 2026@inkswap$0Inkswap algorithmically matches indie Substack writers (100-5K subscribers) and auto-swaps their best-performing back-issue links with each other. Join the waitlist today.Marketplaces and directories, Scheduling and booking7 Mar 2026
Rows 51 to 94 of 94
PreviousPage 2 of 2
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.