Open Source Detectify Alternatives
A curated collection of the 2 best open source alternatives to Detectify.
The best open source alternative to Detectify is ProjectDiscovery. If that doesn't suit you, we've compiled a ranked list of other open source Detectify alternatives to help you find a suitable replacement. Other interesting open source alternative to Detectify is StatusScout.
Detectify alternatives are mainly Monitoring & Observability but may also be Threat Detection & Response. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Detectify.
A template-driven vulnerability scanner that runs YAML detection recipes across HTTP, DNS, TCP and more, at scale from the command line.
Nuclei is a vulnerability scanner whose detection logic lives in YAML files rather than in the scanner itself. A template names the requests to send and the conditions that confirm a finding, which is how the project pursues zero false positives, by reproducing the steps an attacker would take instead of matching a banner.
Templates come from thousands of contributing security professionals and live in their own repository, so coverage of trending vulnerabilities arrives without waiting for a release. Scanning runs in parallel with request clustering, and one binary handles TCP, DNS, SSL, WHOIS, JavaScript and code protocols. It installs with go install and needs Go 1.24.2 or newer.
Its command line gives fine control over what actually runs.
- Template filtering: select or exclude by tag, author, severity, template id or protocol type.
- Input formats: targets from a list, Burp output, JSONL, YAML, OpenAPI or Swagger definitions.
- Automatic scans: technology detection maps a target to the tags worth running against it.
- Custom templates: write your own, validate them, and sign them so unsigned ones can be refused.
- Pipeline integration: run it as a CI step for detection and regression testing, pushing results to Jira, Splunk, GitHub, Elastic or GitLab.
The maintainers warn that the project is in active development and that breaking changes land with releases, so read the changelog before upgrading. They also state plainly that it is built as a standalone CLI tool and that running it as a service carries security risks. A free cloud tier stores findings and templates.
Self-hosted monitoring for security headers, certificates, DNS and exposed files across your sites, alerting the moment a check starts failing.
StatusScout watches the parts of a website that quietly break: an expiring certificate, a security header someone removed, a config file left readable, a subdomain pointing at nothing. It runs the checks on a schedule and sends an alert when something changes, so the discovery does not happen through a customer.
The repository is a workspace monorepo. A Fastify REST API serves the React dashboard and the public scan page, a cron package triggers periodic checks, a background worker executes them, and shared utilities handle notifications and issue history. MongoDB and Redis sit behind it, and Docker Compose starts everything at once.
The checks cover more ground than uptime alone.
- Certificates: SSL and TLS validity is tracked and flagged before it lapses.
- Headers and cookies: security headers, cookie settings, mixed content and general page security are inspected.
- Exposure: sensitive files, hidden paths and exposed API documentation are hunted using bundled wordlists.
- DNS: subfinder discovers subdomains and subzy checks them for takeover.
- Browser flows: Playwright Chromium drives custom flow checks against real pages.
- Broken links: dead links are reported alongside the security findings.
The quick path needs only Docker and Docker Compose; development also wants Node.js 20 or newer, local MongoDB and Redis, and the Go tools and Chromium above, without which the DNS and flow checks fail gracefully. The license is source-available, free for personal and commercial self-hosted use, with reselling it as a hosted service restricted.
