Sites using Firebase Authentication
Google's hosted authentication service offering email, phone and federated sign-in for web and mobile apps.
14 sites
13 found by StackScope, 1 via launch platforms
- StackScope Discovery (Indie) 7
- StackScope Wider Web 6
- Other 1
Firebase Authentication has been detected on 14 launches we've crawled. Most recent detection: ATRAS | Unified AI Platform for Government Exam Prep & Career Success, 5 days ago.
It's most commonly paired with Supabase, HTTP/3, and Cloudflare.
Domain endings using Firebase Authentication
14 sites
- .com 78.57%
- .fyi 7.14%
- .live 7.14%
- .net 7.14%
Share of new sites using Firebase Authentication
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites.
Amber: on 10 September 2026 we improved our infrastructure so we can 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 that date. We record each site as it was when we found it.
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.
Auth leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Google Sign-In
|
0.64% | 37.07% |
| #2 | ▲1 |
Clerk
|
0.47% | 26.97% |
| #3 | ▼1 |
Auth.js
|
0.45% | 25.97% |
| #4 | – |
Google Identity Platform
|
0.06% | 3.62% |
| #5 | ▲4 |
Privy
|
0.03% | 1.93% |
| … | ||||
| #45 | – |
Firebase Authentication
Current page
|
<0.01% | 0.02% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Auth tool. All 161 in Auth →
Often used with
| Tool | Sites |
|---|---|
Supabase
|
7 |
| HTTP/3 | 7 |
Cloudflare
|
6 |
jsDelivr
|
6 |
| HSTS | 6 |
Tools most often detected on the same sites as Firebase Authentication.
Recent launches we can show
8 of the 14 sites using Firebase Authentication are product launches we list individually. The other 6 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
EU-ACCES — Website readiness screening for Europe
KI-Kennzeichnungs-Tool -- Kennzeichnung nach Art. 50 AI Act
AI
WorldSprint
Games
CrushSVG – Free SVG to PNG Converter Online
Design
EVs Colombia | Vehículos eléctricos Colombia
SpectraX — Mercado de coleccionistas
Games
Riftbound Cube Builder - Free Deckbuilder, Cube & Draft Tool
Games
The StackScope API serves all 14 sites using Firebase Authentication, filterable and exportable, from £15 a month.