CertKit vs Falco

CertKit

Falco

CertKit

Pros

• Free Community tier makes it easy to evaluate the platform's core discovery and monitoring capabilities without cost.
• Deployment via a single agent to a wide range of servers and network appliances, without needing ACME configured everywhere, simplifies rollout across heterogeneous infrastructure.
• Certificate Transparency-based discovery surfaces forgotten or unauthorized certificates that manual tracking would likely miss.
• Generous 90-day free trial on paid tiers with no credit card required lowers the barrier to a full evaluation.
• Purpose-built and narrowly focused on certificate lifecycle management rather than being a small feature bolted onto a broader security suite.

Cons

• A relatively new product, launched in 2024, with less of a long-term track record than established certificate lifecycle management vendors.
• Small company (TrackJS LLC) behind the product means less scale of support and resources compared to larger enterprise security vendors.
• Free and entry-level paid tiers cap certificate and agent counts fairly low (2 and 10 respectively), meaning larger organizations will need Business or Enterprise pricing quickly.
• Enterprise pricing is custom and not published, requiring a sales conversation for large-scale or multi-tenant deployments.
• As with any tool crawling Certificate Transparency logs, discovery is limited to publicly logged certificates and won't surface internal-only or private CA-issued certificates not logged publicly.

Falco

Pros

• Completely free and open source under Apache 2.0, with no vendor lock-in or usage limits
• CNCF graduated status backed by an independent security audit and multi-vendor governance
• Large, active community with an extensive default rule library and plugin ecosystem
• Low runtime overhead with driver options that support a wide range of kernel versions and node configurations

Cons

• Linux-only kernel-level monitoring, so it cannot directly protect Windows or macOS workloads
• Default rules require tuning to reduce false positives in most production environments
• Detection-only by design; blocking or in-kernel enforcement requires pairing it with a separate tool like Falco Talon or Tetragon
• Self-hosting the full pipeline, including alert routing and dashboards, takes real operational effort unless paired with a managed commercial platform

CertKit

• Preventing certificate-expiration outages — IT teams use CertKit's monitoring and automated renewal to eliminate the risk of a forgotten certificate expiring and taking down a production service unexpectedly.
• Auditing an organization's full certificate footprint — Security teams use CertKit's Certificate Transparency-based discovery to build a complete inventory of every certificate issued for their domains, including ones issued outside official processes.
• Managing certificates across multiple client environments — Managed service providers use CertKit's multi-tenant Enterprise tier to centrally track and automate certificate lifecycle management across many separate client infrastructures.

Falco

• Kubernetes runtime threat detection — Monitors syscalls and Kubernetes audit events across clusters to catch container escapes, unexpected shell access, and privilege escalation as they happen.
• Compliance and audit logging — Produces a continuous, queryable record of privileged and anomalous system activity that supports PCI-DSS, SOC 2, and GDPR audit requirements.
• Cloud account anomaly detection — Uses source plugins to ingest AWS CloudTrail, Okta, and GitHub audit logs into the same rules engine used for host and container detection.