Honest comparison

OpenCVE alternative for SaaS stacks

OpenCVE is the right tool if you want to search 350k CVEs, self-host, and run SOC remediation workflows. ZeroDayTracker is the right tool if you want CISA KEV alerts on the SaaS you actually pay for, without standing up another platform.

OpenCVE is a trademark of its owner. Their site. Facts from public pages as of 2026; products change.

Feature	ZeroDayTracker	OpenCVE
Primary signal	CISA KEV + critical NVD	Full CVE corpus (NVD, MITRE, Red Hat, KEV, more)
Setup	Name SaaS tools. No agent.	Subscribe to vendors/products (CPE) or self-host
Supplier graph	Parent, cloud host, identity fan-out	Not a SaaS supplier graph
Audience	CIOs and founders without a SIEM	SOCs, MSSPs, product security
Hosting	SaaS only	Community self-host or Cloud
Price	Free (3 tools) / $20/mo Keep Track	Free → €19+ Cloud; commercial license for some self-host uses

Pick ZeroDayTracker if

You are a CIO, founder, or lean security lead — not a SOC with a CVE queue.
You want exploited-first signal (CISA KEV), not every CVE in NVD.
You need supplier blast-radius (Slack → AWS, Auth0 → Okta) without building CPE subscriptions by hand.
You want a hosted product at $20/month, not a self-hosted stack or a Cloud plan aimed at MSSPs.

Pick OpenCVE if

You need a searchable archive of 350k+ CVEs with EPSS, KEV flags, and custom queries.
You want to self-host, assign owners, and track remediation status across a team.
You are an MSSP or product-security team monitoring many products, not a named SaaS watchlist.

OpenCVE won “CVE tracker.” We are not trying to take that.

OpenCVE ranks for CVE tracking because it publishes a public, searchable database. That is a different product. ZeroDayTracker publishes a SaaS-filtered KEV tracker and a supplier graph. If your search was “CVE database,” you are in the wrong aisle. If it was “CISA KEV alerts for my stack without a SIEM,” you are not.

Noise is the actual competitor

A hosted CVE feed that emails every HIGH on Microsoft, Linux, and Cisco will train you to ignore email. We match thousands of SaaS and platform products and only fan out through relationships you would explain to a board: parent, cloud host, identity. That is fewer alerts. That is the point.

Other comparisons: Sentrytex · vulntracker.io · Recorded Future

Questions

Is ZeroDayTracker an OpenCVE alternative?

For “alert me when something I use is being exploited,” yes. For “search every CVE and run a remediation workflow,” no — use OpenCVE.

Do I still need OpenCVE if I use ZeroDayTracker?

If someone on your team triages the full NVD, keep OpenCVE or the NVD itself. ZeroDayTracker does not replace a CVE database.

Watch the SaaS that holds your data.

Three tools free. Keep Track is $20/month for supplier blast-radius, full history, and a digest.

Start watching — free Pricing