Sites using Congress.gov
Official United States legislative information service and API run by the Library of Congress.
12 sites
9 found by StackScope, 3 via launch platforms
- StackScope Discovery (Indie) 8
- StackScope Wider Web 1
- Hacker News 2
- PeerPush 1
Congress.gov has been detected on 12 launches we've crawled. Most recent detection: touBill™ — Civic Engagement for the Modern Era, on September 29, 2026.
It's most commonly paired with HSTS, Vercel, and Next.js.
Domain endings using Congress.gov
12 sites
- .com 41.67%
- .app 16.67%
- .org 16.67%
- .gov 8.33%
- .me 8.33%
- .us 8.33%
Share of new sites using Congress.gov
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.
Data API leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
LocalLogic
|
0.06% | 23.72% |
| #2 | ▼2 |
The Movie Database
|
0.02% | 6.18% |
| #3 | ▲1 |
Daum Postcode
|
0.01% | 5.19% |
| #4 | ▲6 |
data.gouv.fr
|
0.01% | 3.41% |
| #5 | ▼2 |
ViaCEP
|
0.01% | 3.27% |
| … | ||||
| #146 | ▼72 |
Congress.gov
Current page
|
<0.01% | 0.10% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Data API tool.Among September launches it ranked #179 in Data API, down from #107 in August. All 1387 in Data API →
Often used with
| Tool | Sites |
|---|---|
| HSTS | 11 |
Vercel
|
10 |
Next.js
|
10 |
React
|
10 |
Tailwind CSS
|
9 |
Tools most often detected on the same sites as Congress.gov.
Recent launches we can show
11 of the 12 sites using Congress.gov are product launches we list individually. The other 1 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
Capitolisation
Finance
Bribery is Legal — Interest-Group Money to Congress and Congressional Candidates, FEC Data 2010–2026
Hilltelligence
THE RECORD
Delegation Decoded
HoldingsIntel
Finance
TrueVote — Follow the Money. Know Your Candidate.
Capitolisation
Aperio Analytics // Congress Cards
Generation Gap — Who Really Represents You?
The StackScope API serves all 12 sites using Congress.gov, filterable and exportable, from £15 a month.