OpenCVE Alternative
OpenCVE is a vulnerability monitoring platform with published source code, which you install on your own server or use from its cloud. TechWatchAlert is a service hosted in France that starts from your inventory instead of manual subscriptions. The choice comes down to one question: do you want to operate a platform, or receive alerts?
What OpenCVE is, exactly
OpenCVE aggregates public vulnerability data and lets you subscribe to vendors and products to receive alerts by email, Slack, Jira or webhook, with rules and remediation tracking. It comes in two forms: Community, which you install from GitHub, and Cloud, managed by the vendor. Version 2 is a complete rewrite of the project.
It is a serious tool, close to ours in its vendor/product subscription model. We do not present it as a weak competitor, because it is not one.
“Open source”: the licensing nuance that matters
An often misunderstood point: OpenCVE is not open source in the classic sense. Its code is published under the Business Source License 1.1, a so-called source-available license. Until a planned switch in 2030 to Apache 2.0, it notably prohibits using the code to operate a commercial security monitoring and alerting service.
In practice: you can read the code and self-host it for your own use. You cannot resell it as a service to your clients. If you are an agency or a managed service provider, read the license before building a service on it.
The real differences
| Criterion | TechWatchAlert | OpenCVE |
|---|---|---|
| Hosted (nothing to operate) | Yes | Managed cloud, or self-hosting |
| Self-hosting the code | No (hosted service) | Yes, under the BSL 1.1 license |
| Code license | Proprietary | Source-available (switches to Apache 2.0 in 2030) |
| Stack targeting (CPE, SBOM) | Yes | Manual vendor / product subscription |
| End-of-life (EOL) tracking | Yes | No |
| KEV + EPSS prioritization in the alert | Yes | Data available, triage up to you |
| Email, Slack, webhook alerts | Yes | Yes |
| REST API | Yes | Yes |
| Interface languages | Seven languages, including English | English |
| Inventory from an agent and connectors | Yes | No |
| Patch management | Yes, Team plan | No |
| Free plan | Yes | Yes (cloud, free tier) |
| Data hosting | France | On your premises, or the vendor's cloud |
In short: OpenCVE wins on access to the code and control of hosting. TechWatchAlert wins on real inventory, end of life, patching and evidence, with nothing to operate.
What OpenCVE does better than we do
You can read the code and run it on your own infrastructure. That is a guarantee we cannot offer. If your internal policy requires inventory data to stay inside your network, OpenCVE meets it and we do not.
The project is older and mature within its scope. Its vendor/product subscription management is proven, and its community publishes feedback we have not yet accumulated.
The entry cost can stay at zero for good. Self-hosted, with no license fee, OpenCVE costs you only infrastructure and operating time. For a team that already runs a Docker platform and an on-call rotation, that is a real argument.
What we do differently
The scope is inferred, not typed in. With OpenCVE, you subscribe product by product. TechWatchAlert starts from your declared stack, entered by hand, imported from an SBOM (Software Bill of Materials, the inventory of your components) or detected from a public URL. Only CVEs that affect your versions then come through, with a severity threshold per component.
End of support is tracked as a risk. An end-of-life version will never receive another patch: it is a permanent vulnerability. We link your products to their end-of-support dates and warn you before the deadline. OpenCVE does not highlight this feature.
19 sources are cross-checked, including nine vulnerability feeds: the CVE list, NVD, KEV, EPSS, published proofs of concept, GitHub advisories, OSV, CERT-FR and the EUVD. Cross-checking holds when one of them falls behind, like the NVD since April 2026. Details are on the data sources.
Inventory and patching follow. The agent inventories Windows, Linux and macOS machines, connectors read your IT asset tools and scanners, and the Team plan installs patches in rings. The interface comes in seven languages.
Who it's for, in practice
Freelance developer, four client stacks. The free plan is enough: up to 50 components and 5 machines, alerts by email and Slack. What it avoids: discovering a critical flaw in a project delivered six months earlier. Self-hosted OpenCVE would need a server and its maintenance for the same result.
Eight-person agency. Team sharing opens a common Slack channel: everyone picks up the alerts that concern them, case tracking keeps the record. With eight people, the Team plan (unlimited users) also unlocks the API, workflows and SSO.
Security team at a mid-sized company. If the requirement is “nothing leaves the network,” choose OpenCVE. If the requirement is “we have no one to run yet another platform,” choose the hosted service and connect the API to your monitoring tool.
Method and verification date
Facts checked on on the vendors’ public pages, without privileged access or real-world testing of their product. License information comes from the LICENSE file in the OpenCVE repository; features come from its documentation and blog. Spotted an error or a change in offering? Report it via our contact page: we correct the row and re-date the page.