Sites using Unpaywall
Open database API that finds free legal full-text versions of scholarly articles.
4 sites
2 found by StackScope, 2 via launch platforms
- StackScope Discovery (Indie) 2
- Product Hunt 1
- PeerPush 1
Unpaywall has been detected on 4 launches since first appearing in July 2026. Most recent detection: StrictCite — Reference Audit Studio, yesterday.
It's most commonly paired with Cloudflare, Tailwind CSS, and HSTS.
Share of new sites using Unpaywall
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. 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.
Data API leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | ▲2 |
LocalLogic
|
0.07% | 25.22% |
| #2 | ▼1 |
The Movie Database
|
0.02% | 6.24% |
| #3 | ▲5 |
Daum Postcode
|
0.01% | 4.44% |
| #4 | ▼3 |
Frankfurter
|
0.01% | 3.56% |
| #5 | ▼1 |
ViaCEP
|
0.01% | 3.56% |
| … | ||||
| #253 | ▼103 |
Unpaywall
Current page
|
<0.01% | 0.06% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Data API tool.Among August launches it ranked #238 in Data API, down from #135 in July. All 913 in Data API →
Often used with
| Tool | Launches |
|---|---|
Cloudflare
|
2 |
Tailwind CSS
|
2 |
| HSTS | 2 |
| Crossref | 2 |
Open Library
|
2 |
Tools most often detected on the same launches as Unpaywall.
Recent launches we can show
4 of the 4 sites using Unpaywall are product launches we list individually.
