Frontend for people vs API for programs
SearXNG's primary surface is a search page; its JSON output exists but is secondary. OpenSERP's primary surface is the API contract, so the response shape is documented, stable, and safe to build on.
Comparison
OpenSERP vs SearXNG
OpenSERP and SearXNG both self-host and both touch search, so they get compared often - but they aim at different users. SearXNG is a privacy-focused metasearch frontend built for people to browse results without being tracked. OpenSERP is a SERP API built for programs: it returns structured JSON with ranks, URLs, snippets, and engine data you can store and pipe downstream.
The short answer
If you want a private search page for humans and occasionally read its JSON, SearXNG is the honest answer and it's a great project. If you're building software that consumes ranked search results - rank tracking, AI grounding, research pipelines - OpenSERP is designed for that from the start, with a stable response shape and a managed Cloud path when self-hosting gets old. Pick by who the consumer is: a person, or a program.
Is the consumer a human browsing, or code parsing results?
Do you need a stable, documented JSON response shape to build on?
Do you need ranks, engine, and position as first-class fields?
Do you want a managed API option that shares the self-hosted response shape?
| Provider | Model | Focus | Best fit |
|---|---|---|---|
| OpenSERP Cloud | Open-source SERP API plus managed Cloud | Structured JSON results, ranks, extraction, megasearch | Developers building on machine-readable search data |
| SearXNG | Self-hosted metasearch frontend | Private search UI aggregating many engines | Humans who want a private search page |
How to decide
The managed path
Both self-host. OpenSERP adds OpenSERP Cloud with the same response shape, so code written against a local server keeps working on the hosted API. SearXNG stays self-hosted by design.
Frequently asked questions
Can't I just use SearXNG's JSON API?
You can, and for light use it works. The difference is intent: SearXNG's JSON is a secondary output of a search frontend, so its shape can shift with the UI. OpenSERP treats the JSON contract as the product - documented, versioned, and stable across the OSS engine and OpenSERP Cloud - which matters once real code depends on it.
Is OpenSERP private like SearXNG?
The self-hosted OpenSERP engine runs on your own infrastructure, so queries never leave your box - the same privacy property that draws people to SearXNG. The difference is the output: OpenSERP hands your code structured results instead of rendering a search page for a person.