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#1 of 143 in Publishing In our data since Apr 2026 Last seen: Oct 16, 2026 Most recent launch: The Raising Sun — Japanese startup funding, in English, Oct 16, 2026 Website: substack.com

3,217 sites

3,100 found by StackScope, 117 via launch platforms

StackScope Wider Web 2,972 StackScope Discovery (Indie) 128 Hacker News 57 Product Hunt 50 PeerPush 8 Other 2
  • StackScope Wider Web 2,972
  • StackScope Discovery (Indie) 128
  • Hacker News 57
  • Product Hunt 50
  • PeerPush 8
  • Other 2
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

Substack appeared on about 810 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Stackdar alerts

Get told when a new site ships with Substack.

808 new sites with Substack first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using Substack, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

Share of new sites using Substack

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.

0.0%
last 7 days
+0.0pp vs prior week
0.0%
30 days to Oct 15
-0.0pp vs 30 days before
3,217
sites all time
since Apr 2026
Substack daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Oct Weekly averages before this point, daily after. Jul 18 · 8 / 24723 = 0.0% Jul 19 · 15 / 27645 = 0.1% Jul 20 · 8 / 23868 = 0.0% Jul 21 · 8 / 22945 = 0.0% Jul 22 · 16 / 24372 = 0.1% Jul 23 · 9 / 18101 = 0.0% Jul 24 · 5 / 13980 = 0.0% Jul 25 · 5 / 9550 = 0.1% Jul 26 · 10 / 21752 = 0.0% Jul 27 · 26 / 37234 = 0.1% Jul 28 · 20 / 41886 = 0.0% Jul 29 · 31 / 53564 = 0.1% Jul 30 · 31 / 48258 = 0.1% Jul 31 · 39 / 56048 = 0.1% Aug 1 · 44 / 54890 = 0.1% Aug 2 · 32 / 53852 = 0.1% Aug 3 · 32 / 52615 = 0.1% Aug 4 · 25 / 40704 = 0.1% Aug 5 · 22 / 35348 = 0.1% Aug 6 · 27 / 39149 = 0.1% Aug 7 · 20 / 40250 = 0.0% Aug 8 · 20 / 42805 = 0.0% Aug 9 · 22 / 37777 = 0.1% Aug 10 · 16 / 32324 = 0.0% Aug 11 · 19 / 34557 = 0.1% Aug 12 · 25 / 37135 = 0.1% Aug 13 · 26 / 55469 = 0.0% Aug 14 · 45 / 56755 = 0.1% Aug 15 · 38 / 55907 = 0.1% Aug 16 · 31 / 56270 = 0.1% Aug 17 · 31 / 45809 = 0.1% Aug 18 · 30 / 56662 = 0.1% Aug 19 · 41 / 51684 = 0.1% Aug 20 · 39 / 68977 = 0.1% Aug 21 · 69 / 93849 = 0.1% Aug 22 · 58 / 94192 = 0.1% Aug 23 · 62 / 93593 = 0.1% Aug 24 · 48 / 81709 = 0.1% Aug 25 · 57 / 71532 = 0.1% Aug 26 · 47 / 66856 = 0.1% Aug 27 · 69 / 87835 = 0.1% Aug 28 · 74 / 87905 = 0.1% Aug 29 · 49 / 88063 = 0.1% Aug 30 · 77 / 100668 = 0.1% Aug 31 · 61 / 100238 = 0.1% Sep 1 · 73 / 103415 = 0.1% Sep 2 · 74 / 108914 = 0.1% Sep 3 · 59 / 103276 = 0.1% Sep 4 · 69 / 98533 = 0.1% Sep 5 · 66 / 102853 = 0.1% Sep 6 · 59 / 89272 = 0.1% Sep 7 · 41 / 86119 = 0.0% Sep 8 · 54 / 77965 = 0.1% Sep 9 · 41 / 75515 = 0.1% Sep 10 · 48 / 83653 = 0.1% Sep 11 · 52 / 85552 = 0.1% Sep 12 · 33 / 56764 = 0.1% Sep 13 · 29 / 57989 = 0.1% Sep 14 · 35 / 59224 = 0.1% Sep 15 · 26 / 58180 = 0.0% Sep 16 · 24 / 58965 = 0.0% Sep 17 · 15 / 56747 = 0.0% Sep 18 · 27 / 53080 = 0.1% Sep 19 · 21 / 45270 = 0.0% Sep 20 · 16 / 44755 = 0.0% Sep 21 · 36 / 51661 = 0.1% Sep 22 · 26 / 55402 = 0.0% Sep 23 · 28 / 58308 = 0.0% Sep 24 · 25 / 53459 = 0.0% Sep 25 · 26 / 50759 = 0.1% Sep 26 · 31 / 101516 = 0.0% Sep 27 · 16 / 52131 = 0.0% Sep 28 · 25 / 61107 = 0.0% Sep 29 · 38 / 77850 = 0.0% Sep 30 · 28 / 69709 = 0.0% Oct 1 · 40 / 69222 = 0.1% Oct 2 · 23 / 64730 = 0.0% Oct 3 · 23 / 53733 = 0.0% Oct 4 · 24 / 52052 = 0.0% Oct 5 · 24 / 63687 = 0.0% Oct 6 · 27 / 67585 = 0.0% Oct 7 · 30 / 67656 = 0.0% Oct 8 · 26 / 69310 = 0.0% Oct 9 · 35 / 70361 = 0.0% Oct 10 · 25 / 60636 = 0.0% Oct 11 · 29 / 65593 = 0.0% Oct 12 · 28 / 66628 = 0.0% Oct 13 · 35 / 70942 = 0.0% Oct 14 · 22 / 70655 = 0.0% Oct 15 · 35 / 93489 = 0.0%
Mar 30, 2026 90 days Oct 15, 2026

The shaded areas were measured against a different set of sites, so the line can step there without Substack itself changing.

Coverage details

Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.

Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.

Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

What kind of sites use Substack

1,581 sites with a known type, all time

Content
58.1%
Finance
7.4%
Health
7.2%
Education
5.4%
AI
3.7%
Social
3.5%
Marketing
3.1%
Crypto
2.6%
Productivity
2.5%
Developer Tools
1.9%
Games
1.6%
Design
1.0%
Directory
0.7%
E-commerce
0.6%
Hiring & HR
0.6%

Domain endings using Substack

3,210 sites, all time

  • .com 72.6%
  • .org 4.2%
  • .co 3.6%
  • .ai 2.1%
  • .uk 1.7%
  • .net 1.6%
  • .ca 1.5%
  • .io 1.1%
  • .dev 1.1%
  • .me 1.1%
  • .blog 1.0%
  • .app 0.9%
  • .fr 0.6%
  • .xyz 0.6%
  • .in 0.6%

Country

Country likely for 241 of 3,217 sites (7.5%), all time.

How we know

Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.

  • United Kingdom United Kingdom 23.7%
  • United States United States 23.2%
  • Canada Canada 13.3%
  • France France 7.9%
  • India India 5.8%
  • Australia Australia 4.6%
  • Brazil Brazil 2.9%
  • Spain Spain 2.5%
  • Sweden Sweden 2.5%
  • Switzerland Switzerland 1.7%
  • Ireland Ireland 1.7%
  • Japan Japan 1.7%
  • Romania Romania 1.2%
  • Germany Germany 0.8%
  • Italy Italy 0.8%

Green hosting

117 checked sites since Apr 2026.

What this means

The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.

  • Substack 69%
  • Average 47%

Publishing leaders

Tool % of sitesall time % of categoryall time
#1 – Substack Current page 0.1% 49.5%
#2 – Open Journal Systems <0.1% 11.7%
#3 ▲2 Facebook Instant Articles <0.1% 4.7%
#4 ▼1 FeedBurner <0.1% 4.3%
#5 ▼2 Heyzine <0.1% 2.6%

Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Publishing tool. All 143 in Publishing →

Often used with

Tool Sites vs all new sites
AWS ALB 1,829 230x
Express 1,833 34x
Sentry 1,991 13x
React Router 1,854 8.6x
Lucide Icons 1,923 3.7x

Tools that turn up far more often on Substack sites than on new sites in general, and how many times as common each one is there.

Recent launches using Substack

245 of the 3,217 sites using Substack are product launches we list individually. The other 2,972 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works

The Raising Sun — Japanese startup funding, in English Oct 16, 2026 · Finance Also detected Cloudflare Me vs my AI · FPL Oct 16, 2026 · Games Also detected Cloudflare The Loadout · What's new in AI, and whether you should care. Oct 16, 2026 Also detected GitHub Pages Cloudflare Fastly Google Fonts Screenshot of StonerCents.com, a launch using Substack StonerCents.com Oct 15, 2026 · score 7.1 · Crypto Also detected Bluesky Cloudflare Google Ads Google Fonts Screenshot of NMR Spectral Analysis with AI Technology, a launch using Substack NMR Spectral Analysis with AI Technology Oct 15, 2026 · score 7.5 · United States Crypto Also detected React Express AWS ALB Amazon IsauLab（イサウラボ）| 日本のビジネスにAI自動化を Oct 15, 2026 Also detected Cloudflare Tally Agent Field Notes — AI agent use cases for solo builders Oct 14, 2026 · AI Also detected Next.js React Cloudflare OpenNext Screenshot of Waleedmubarak, a launch using Substack Waleedmubarak Oct 14, 2026 · score 7.5 · United States Crypto Also detected React Express AWS ALB Amazon Bots in Public | Coaching for PMs who want to automate their admin Oct 14, 2026 · AI Also detected Cloudflare Google Fonts Deploy Grade — What to deploy, what it costs, what it returned Oct 14, 2026 Also detected Cloudflare Call Sheet Daily - Earnings Call Intelligence Oct 13, 2026 · Finance Also detected Cloudflare Google Analytics Google Tag Manager fAInance — Ordenamos los números de tu empresa con IA Oct 12, 2026 · Finance Also detected Astro Netlify Cloudflare Facebook Pixel

Showing the most recent 12 of 245.

The StackScope API serves all 3,217 sites using Substack, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.