PropRaven API alternatives

US parcel, owner and permit records for all 50 states, with an OpenAPI 3.1 spec. If it doesn't fit your project, here are the 10 best free Open Data APIs to use instead in 2026, out of 93 in the directory.

For reference, PropRaven API: HTTPS.

1
Big Data Explained API
Online · 1065 ms
Cloud data warehouse list prices, read daily from AWS and Azure pricing APIs, with price history.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
2
BTU Graph API
Online · 1008 ms
Source-reviewed energy company knowledge graph and directory exports.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
3
Caliber API
Online · 1185 ms
Which red dot optics fit which pistols, each fit cited to a maker or retailer.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
4
CollegeCalcAI API
Online · 969 ms
US college admission chance estimates and admissions data for 1,100+ colleges.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
5
EOSL API
Online · 963 ms
Hardware end-of-sale and end-of-service-life dates by part number, source-linked.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
6
Namedesk API
Online · 1123 ms
Domain name registration statistics by TLD, registry and registrar.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
7
RebateHub API
Online · 937 ms
Canadian home energy rebate, grant and loan programs with status, deadlines and official sources.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
8
The Deploy Log API
Online · 427 ms
1,000+ AI deployments, each linked to the publisher's own page, JSON and CSV, CC BY 4.0.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
9
ConsumerSun Recalls API
Online · 1301 ms
US product, food, drug, device and vehicle recalls from CPSC, FDA and NHTSA.
- No API key needed
- 100% uptime (30 days)
- Returns JSON at its URL
- Callable from the browser (CORS)
No authHTTPSCORS
10
CuttingToolsAI API
Online · 1073 ms
Cross-brand carbide insert grade equivalents by ISO application class.
- No API key needed
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS

PropRaven API vs alternatives

PropRaven API compared with its alternatives
API	API key	HTTPS	CORS	Uptime	Response	Rating
PropRaven	Required	Yes	No	0%	–	Not rated
Big Data Explained	No	Yes	Yes	100%	1065 ms	Not rated
BTU Graph	No	Yes	Yes	100%	1008 ms	Not rated
Caliber	No	Yes	Yes	100%	1185 ms	Not rated
CollegeCalcAI	No	Yes	Yes	100%	969 ms	Not rated
EOSL	No	Yes	Yes	100%	963 ms	Not rated
Namedesk	No	Yes	Yes	100%	1123 ms	Not rated
RebateHub	No	Yes	Yes	100%	937 ms	Not rated
The Deploy Log	No	Yes	Yes	100%	427 ms	Not rated

PropRaven API alternatives FAQ

What is the best free alternative to the PropRaven API in 2026?

The top-ranked free alternatives to the PropRaven API are Big Data Explained API, BTU Graph API and Caliber API, all in the Open Data category. Rankings combine access (API key, HTTPS, CORS), daily uptime checks and developer ratings.

Is there a PropRaven API alternative that doesn't need an API key?

Yes: Big Data Explained API, BTU Graph API and Caliber API work without an API key, unlike the PropRaven API, which uses apiKey authentication.

Is there a PropRaven API alternative I can call from the browser?

Big Data Explained API, BTU Graph API and Caliber API support CORS, so front-end JavaScript can call them directly.

How many Open Data APIs are similar to the PropRaven API?

The directory lists 90 other free Open Data APIs. This page compares the top ones side by side.