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Sites using Auth.js

Auth.js (formerly NextAuth.js v4, rebranded as Auth.js v5): open source authentication library for Next.js / SvelteKit / SolidStart / Express.

#2 of 120 in Auth Tracked since Apr 2026 Last seen: Sep 2, 2026 Website: authjs.dev
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14,883 sites

12,565 found by StackScope, 2,318 via launch platforms

StackScope Discovery (Indie) 7,415 StackScope Wider Web 5,150 Product Hunt 1,861 PeerPush 273 Hacker News 95 Other 89
  • StackScope Discovery (Indie) 7,415
  • StackScope Wider Web 5,150
  • Product Hunt 1,861
  • PeerPush 273
  • Hacker News 95
  • Other 89
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.4% -0.0pp
Most used with Next.js, React, Tailwind CSS
Top product types Marketing, Productivity, Education
Green hosting 38% vs 45% avg

Auth.js has been detected on 14,883 launches we've crawled. The 7-day rolling share is 0.4%, roughly steady week on week. Most recent detection: Rewozo — Digital Loyalty Cards for Local Businesses | Rewozo, today.

It's most commonly paired with Next.js, React, and Tailwind CSS. By product type, the launches using it are most often Marketing (12%), Productivity (11%), and Education (11%). By estimated origin, the United States leads (36%), ahead of India (15%). By domain ending, launches using it are 2.6 times as likely as the average launch to live on a .store domain. The 2,311 scored launches using Auth.js average a StackScope score of 7.3 out of 10, against 6.4 across all launches we score.

What kind of products ship with Auth.js

7,950 launches

Marketing
11.79%
Productivity
11.28%
Education
11.25%
Finance
8.99%
E-commerce
8.86%
AI
8.68%
Developer Tools
7.66%
Health
6.74%
Social
5.09%
Content
4.98%
Hiring & HR
4.62%
Games
4.19%
Design
2.43%
Crypto
1.81%
Directory
1.64%

Domain endings using Auth.js

14,875 sites

  • .com 43.29%
  • .app 11.79%
  • .ai 5.00%
  • .io 4.23%
  • .in 3.90%
  • .online 3.80%
  • .site 2.97%
  • .xyz 2.50%
  • .co 2.37%
  • .org 2.27%
  • .dev 2.14%
  • .tech 1.98%
  • .net 1.89%
  • .me 1.38%
  • .ca 1.28%

Country

553 of 14,883 sites, where we are confident of the country.

  • United States United States 35.99%
  • India India 15.37%
  • United Kingdom United Kingdom 9.76%
  • Canada Canada 3.98%
  • Netherlands Netherlands 2.53%
  • France France 2.35%
  • Spain Spain 2.17%
  • United Arab Emirates United Arab Emirates 1.81%
  • Germany Germany 1.63%
  • Australia Australia 1.45%
  • South Korea South Korea 1.45%
  • Singapore Singapore 1.45%
  • Israel Israel 1.27%
  • Poland Poland 1.27%
  • Romania Romania 1.08%

Share of new sites using Auth.js

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

0.4%
last 7 days
-0.0pp vs prior week
14,883
sites all time
since Apr 2026
Auth.js 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. 7% 4% 0% Apr May Jun Jul Aug Sep Weekly averages before this point, daily after. Jun 4 · 17 / 599 = 2.8% Jun 5 · 8 / 581 = 1.4% Jun 6 · 13 / 436 = 3.0% Jun 7 · 25 / 404 = 6.2% Jun 8 · 16 / 515 = 3.1% Jun 9 · 16 / 876 = 1.8% Jun 10 · 21 / 722 = 2.9% Jun 11 · 12 / 577 = 2.1% Jun 12 · 5 / 449 = 1.1% Jun 13 · 11 / 380 = 2.9% Jun 14 · 14 / 345 = 4.1% Jun 15 · 11 / 532 = 2.1% Jun 16 · 27 / 1052 = 2.6% Jun 17 · 25 / 907 = 2.8% Jun 18 · 15 / 674 = 2.2% Jun 19 · 9 / 547 = 1.6% Jun 20 · 15 / 443 = 3.4% Jun 21 · 11 / 383 = 2.9% Jun 22 · 10 / 576 = 1.7% Jun 23 · 19 / 900 = 2.1% Jun 24 · 20 / 737 = 2.7% Jun 25 · 16 / 618 = 2.6% Jun 26 · 11 / 534 = 2.1% Jun 27 · 9 / 431 = 2.1% Jun 28 · 8 / 383 = 2.1% Jun 29 · 10 / 503 = 2.0% Jun 30 · 14 / 801 = 1.7% Jul 1 · 18 / 795 = 2.3% Jul 2 · 7 / 604 = 1.2% Jul 3 · 14 / 499 = 2.8% Jul 4 · 11 / 411 = 2.7% Jul 5 · 8 / 367 = 2.2% Jul 6 · 15 / 551 = 2.7% Jul 7 · 24 / 1171 = 2.0% Jul 8 · 129 / 12590 = 1.0% Jul 9 · 203 / 23746 = 0.9% Jul 10 · 198 / 22552 = 0.9% Jul 11 · 126 / 15983 = 0.8% Jul 12 · 139 / 20291 = 0.7% Jul 13 · 181 / 20926 = 0.9% Jul 14 · 143 / 20410 = 0.7% Jul 15 · 142 / 17242 = 0.8% Jul 16 · 115 / 14266 = 0.8% Jul 17 · 176 / 19731 = 0.9% Jul 18 · 197 / 22700 = 0.9% Jul 19 · 213 / 26077 = 0.8% Jul 20 · 171 / 22586 = 0.8% Jul 21 · 149 / 21650 = 0.7% Jul 22 · 177 / 23206 = 0.8% Jul 23 · 138 / 16866 = 0.8% Jul 24 · 88 / 12857 = 0.7% Jul 25 · 59 / 8947 = 0.7% Jul 26 · 116 / 19980 = 0.6% Jul 27 · 215 / 33874 = 0.6% Jul 28 · 246 / 38223 = 0.6% Jul 29 · 302 / 50110 = 0.6% Jul 30 · 227 / 43959 = 0.5% Jul 31 · 298 / 51126 = 0.6% Aug 1 · 266 / 50518 = 0.5% Aug 2 · 299 / 49685 = 0.6% Aug 3 · 241 / 48194 = 0.5% Aug 4 · 249 / 37342 = 0.7% Aug 5 · 151 / 32708 = 0.5% Aug 6 · 197 / 36593 = 0.5% Aug 7 · 231 / 37898 = 0.6% Aug 8 · 206 / 39686 = 0.5% Aug 9 · 193 / 34223 = 0.6% Aug 10 · 135 / 28864 = 0.5% Aug 11 · 183 / 32024 = 0.6% Aug 12 · 198 / 33498 = 0.6% Aug 13 · 234 / 49938 = 0.5% Aug 14 · 230 / 51440 = 0.4% Aug 15 · 255 / 51510 = 0.5% Aug 16 · 276 / 51838 = 0.5% Aug 17 · 231 / 41451 = 0.6% Aug 18 · 274 / 53900 = 0.5% Aug 19 · 267 / 49446 = 0.5% Aug 20 · 324 / 66853 = 0.5% Aug 21 · 402 / 90382 = 0.4% Aug 22 · 408 / 91528 = 0.4% Aug 23 · 372 / 90254 = 0.4% Aug 24 · 378 / 78944 = 0.5% Aug 25 · 333 / 69308 = 0.5% Aug 26 · 271 / 65071 = 0.4% Aug 27 · 377 / 83404 = 0.5% Aug 28 · 363 / 83401 = 0.4% Aug 29 · 351 / 84226 = 0.4% Aug 30 · 415 / 92235 = 0.4% Aug 31 · 388 / 89466 = 0.4% Sep 1 · 367 / 89441 = 0.4%
Mar 30, 2026 90 days Sep 1, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

Auth leaders

Tool % of launches % of category
#1 – Google Sign-In 0.72% 35.47%
#2 ▲1 Auth.js Current page 0.58% 28.74%
#3 ▼1 Clerk 0.57% 28.10%
#4 – Google Identity Platform 0.08% 3.73%
#5 ▼1 Google OAuth 0.04% 1.96%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Auth tool.The most common alternatives to Auth.js among indie launches are Google Identity Platform and Google OAuth. All 120 in Auth →

Often used with

Tool Sites
Next.js 14,207
React 14,188
Tailwind CSS 12,007
HSTS 9,810
Lucide Icons 7,486

Tools most often detected on the same sites as Auth.js.

Recent launches we can show

9,733 of the 14,883 sites using Auth.js are product launches we list individually. The other 5,150 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

Rewozo — Digital Loyalty Cards for Local Businesses | Rewozo Sep 2, 2026 Marketing Steadyfact — geef je AI het geheugen van je hele team Sep 2, 2026 AI TradeVault — Trading Journal Sep 2, 2026 Finance Goofyface Sep 2, 2026 E-Stival – Plateforme de Marketing d'Influence Internationale Sep 2, 2026 SwiffMake — AI marketing content, generated on the fly Sep 2, 2026 Marketing EventFace — Find your event photos Sep 2, 2026 Social OmniMotora · Software de gestión para automotoras en Chile Sep 2, 2026 LaunchSub - Turn Your Discord Into Revenue Sep 2, 2026 BNC Business Card — Smart NFC Digital Business Cards | BNC Sep 2, 2026 Marketing ImmoCheck – Immobilienunterlagen verstehen Sep 2, 2026 헐타 | 아따 헐따 Sep 2, 2026

Showing the most recent 12 of 9,733.

The StackScope API serves all 14,883 sites using Auth.js, filterable and exportable, from £15 a month.

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