In April 2023, Starlink experienced a multi-hour global outage, the root cause of which was an expired certificate on a ground station. Starlink is not an isolated incident of an expired cert causing an outage. Certificates are at the heart of machine identities. When a device is unable to present cryptographic proof that it is trusted, there are visible outages, but other security vulnerabilities emerge. Issues like man-in-the-middle attacks, spoofing, and failed compliance checks can run rampant.
And as certificate lifespans shrink, these outages and issues will become harder to avoid.
Effective March 15, 2026, the Certificate Authority/Browser Forum (CA/B) Ballot SC-081v3 rules that TLS certificate lifespans are dropping from 398 days to 200 days, 100 days (March 15, 2027), and 47 days by March 15, 2029. This comes after a long voting period, which ended April 11, 2025.
A billion-dollar company failing to rotate a certificate after 398 days shows that manual certificate management was never scalable, and as 2029 approaches, many companies will need to turn to automated certificate management.
We evaluated the top certificate management tools and software across features, pricing models, and source availability, to give you definitive criteria for selecting certificate management software.
What to look for in a certificate management software
When searching for a tool to automate your certificate management, there are a few criteria to keep in mind, as what is "best" varies by team, company, and even industry.
Automated certificate lifecycle management
The primary goal for turning to certificate management software is to ensure you aren't managing multiple spreadsheets or calendar events just to track what certs need rotation.
A good certificate lifecycle management tool should allow you to renew, revoke, and discover SSL/TLS certificates in an automated fashion, particularly as the industry moves toward 47-day lifespans.
Protocol support
Protocols provide standardized rules for how applications and devices communicate, and automated certificate renewal is no exception.
ACME, SCEP, and EST are open standards for automated certificate renewal.
When selecting a tool for managing your certs, it is important that it supports one or more of these protocols. Without these protocols, you risk reinventing the wheel to get some kind of automation going.
Certificate authority flexibility
Over time, teams often need to adopt different certificate authorities, either due to compliance requirements or to experiment with different vendors.
Being able to switch between private and public certificate authorities eliminates vendor lock-in and can adapt to your needs over time.
Deployment flexibility
A high priority on your list should be deployment flexibility. Although a good portion of teams run workloads in the cloud, many enterprise security teams require self-hosted deployment for compliance and data residency reasons, which automatically disqualifies cloud-only tools for a significant portion of large enterprise buyers.
Furthermore, a lot of enterprises often operate a hybrid model and the tools would need to be able to adapt accordingly.
Open source vs. proprietary
This is a long-standing debate across all software categories. When it comes to certificate management, open source is preferred because it enables transparency, you can conduct your own security audits, and, more importantly, try-before-you-buy. All of which are important when you are evaluating a tool to manage private keys and digital certificates.
Kubernetes and cloud-native support
A report by the CNCF indicates that 98% of organizations surveyed have now adopted cloud native technologies. Chances are your organization is cloud-native some form, be it Kubernetes or another container orchestrator.
Native integration with the tooling you use most means you spend less time configuring or writing an integration. For example, if your certificate management tool integrates natively with Kubernetes, you spend no time manually deploying certificates across clusters.
Scope
Understanding the scope of a given tool helps you know what you are getting. Some tools offer just certificate management, while others offer the entire suite of identity security.
Fewer vendors means a lower total cost of ownership and faster time to integrate.
Pricing model
Most certificate management tools fall into one of two camps: transparent, self-serve pricing published on a website, or sales-gated quotes that require a demo call to get a number.
For smaller teams, "Contact sales"-type pricing is often a deal breaker. For enterprises buying at scale, it is less of an issue since procurement is involved either way. Even then, this often results in long sales cycles, as you are not certain what you are getting up front.
Licensing models also vary. Some tools charge per certificate, which gets expensive fast as 47-day lifespans drive renewal volume up. Others charge per node, per seat, or as a flat platform license.
The 7 Best Certificate Management Tools in 2026
The tools below were evaluated on lifecycle automation, protocol support, deployment flexibility, and pricing transparency. Each profile is structured the same way, so you can compare without jumping around.
1. Infisical
Infisical is the modern security platform for developers and agents, covering secrets management, certificate lifecycle management, and Privileged Access Management (PAM) in a single product. It is not a suite of acquisitions bolted together. It is a single codebase built on Postgres.
Key Features
Infisical handles the full certificate lifecycle: issuance, renewal, revocation, and discovery with support for ACME, EST, SCEP, and API-based enrollment. It ships with an internal PKI and private CA capabilities, and integrates with external CAs including Let's Encrypt, DigiCert, Sectigo, Microsoft AD CS, AWS Private CA, and Venafi (CyberArk).
Certificate profiles combine an issuing CA, certificate policy, and enrollment method, with policy-enforced defaults that make it manageable to standardize issuance across teams at scale.
What Makes It Different
Most teams running certificate management are also running a separate secrets manager and, in some cases, a PAM solution. Infisical consolidates all three into a single platform, reducing vendor sprawl and integration overhead. Its scope also extends beyond the typical cert-management comparison set with Secret Scanning and Agent Sentinel (AI agent governance via MCP).
Pricing is published on the website across Free, Pro, and Enterprise tiers, so buyers can evaluate cost without a sales call for self-serve tiers.
Additionally, it is open source, so security teams can review it before committing. It deploys on shared, dedicated, or fully self-hosted cloud and offers an EU region (eu.infisical.com), meeting enterprise data residency requirements.
Kubernetes and Cloud-Native
Infisical integrates natively with Kubernetes via the Infisical Kubernetes Operator (with the InfisicalSecret CRD) and the External Secrets Operator, and works alongside GitOps tools like ArgoCD. It also integrates with Terraform for syncing secrets and GitHub/GitLab CI/CD pipelines. For teams running multi-cloud or hybrid environments, a single control plane and secret referencing syntax (${env.path.key}) works across dev, staging, prod, and multi-cloud workloads.
Pricing
Infisical publishes pricing on its website. A free tier is available. Both self-hosted and cloud deployment options are supported, with self-serve signup for Free and Pro tiers. Enterprise requires a sales conversation, and Dedicated Infrastructure is an Enterprise-tier feature.
Limitations
Audit logs are a paid feature, with Pro capped at 90-day retention and Enterprise offering custom retention plus audit log streaming. SOC 2 and pen test reports are Enterprise-only. Self-hosted setups might also pose a challenge for teams without infrastructure experience.
Ideal For
Mid-market and enterprise DevOps, platform engineering, and security teams looking to consolidate certificate management, secrets, and privileged access into one open source platform. A strong fit for teams that want transparency, self-hosting flexibility, and no vendor lock-in, without a months-long procurement process.
2. Venafi (CyberArk Certificate Manager)
Formerly known as Venafi TLS Protect, CyberArk Certificate Manager is one of the oldest enterprise certificate management platforms available. It focuses on machine identity management at scale and now sits inside CyberArk's broader identity security portfolio.
Key Features
CyberArk Certificate Manager covers centralized discovery and inventory across hybrid and multi-cloud environments, automated lifecycle management for TLS and SSL certificates, and policy enforcement across enterprise infrastructure. It integrates with major public and private certificate authorities including DigiCert, Entrust, Sectigo, GlobalSign, Let's Encrypt, and Microsoft ADCS.
Limitations
With complex onboarding and a high total cost of ownership, CyberArk's proprietary architecture limits what you can inspect without contacting sales.
The CyberArk acquisition of Venafi has introduced organizational uncertainty, and teams that have watched the IBM/HashiCorp trajectory will recognize the pattern of slower iteration, shifting priorities, and pricing pressure as the acquirer looks to recoup its investment.
Pricing
Sales-gated. A 30-day trial is available but requires contacting sales first, and final pricing is not disclosed upfront.
Ideal For
Large enterprises with existing CyberArk investments and dedicated PKI or security teams. Not a practical fit for mid-market teams or organizations without a procurement process already in place.
3. Keyfactor
Keyfactor is an enterprise PKI and certificate automation platform with a key focus on post-quantum readiness, which is important as cryptographic models look to remain secure as quantum computing renders current encryption standards obsolete.
Key Features
Keyfactor is capable of detecting certificates across network endpoints, key stores, and CA databases, automating lifecycle management for issuance, renewal, and revocation.
It supports ACME, SCEP, EST, and CMP protocols, and Keyfactor Command is CA-agnostic. The platform ships with EJBCA (an open-source CA) and SignServer for digital signing across code, documents, and artifacts.
Limitations
Deployment is complex, and the product is oriented toward large enterprise teams with dedicated PKI staff. Market consensus also suggests the platform has a dated UI.
Scope is also limited to PKI and certificates and it does not cover secrets management or PAM.
Pricing
Sales-gated. No self-serve tier or public pricing page.
Ideal For
Large enterprises focused on PKI modernization, crypto-agility, and post-quantum readiness. Not a fit for teams looking for an all-in-one identity security platform or open pricing.
4. Sectigo Certificate Manager
From one of the largest commercial public certificate authorities, Sectigo Certificate Manager is a vendor-agnostic platform to manage your certificate lifecycles and has been named G2 Leader for Certificate Lifecycle Management in 2026.
Key Features
Sectigo provides automated lifecycle management for both public and private certificates, supporting the ACME, SCEP, and EST protocols, along with REST APIs for custom workflows. It is CA-agnostic, meaning it can manage certificates from DigiCert, Entrust, and other authorities alongside its own. The platform ships with certificate discovery, a centralized dashboard, and 50+ integrations out of the box.
Limitations
Sectigo is a CLM tool and CA, not a broader security or identity management platform. There is no secret management or PAM capability. Market consensus suggests a learning curve and some UI quirks, which are worth factoring in if your team is small or lacks dedicated PKI staff.
Pricing
Not listed publicly. Contact sales for pricing.
Ideal For
Organizations that want a single vendor for both certificate issuance and lifecycle management. Works best for teams already purchasing Sectigo certificates, since consolidating issuance and management under one vendor reduces coordination overhead.
5. DigiCert Trust Lifecycle Manager
A household name in the PKI and certificate management industry, DigiCert is a trusted global CA with a comprehensive lifecycle management platform. Premium positioning comes with premium pricing, and for organizations where the DigiCert trust brand carries weight internally or with auditors, that trade-off is often accepted.
Key Features
DigiCert Trust Lifecycle Manager can discover and inventory certificates across cloud, network, and file systems. Additionally, it can perform automated lifecycle management via agent-based and agentless options.
Supports protocols such as SCEP, ACME, EST, and CMPv2, ships with private CA management and pre-built certificate profiles, and integrates with ServiceNow, Active Directory, and common DevOps tooling. IoT certificate management is also covered.
Limitations
DigiCert is a certificate and PKI vendor only; secrets management and PAM are outside its scope. Market consensus suggests integration issues with certain cloud providers, which are worth validating against your stack before committing.
Pricing
Sales-gated and at the premium end of the market. No self-serve tier or public pricing page.
Ideal For
Large enterprises and organizations in regulated industries that want a single vendor for CA and CLM, and where the DigiCert brand carries compliance or procurement weight.
6. Smallstep
Built for developer and platform engineering teams, Smallstep is the company behind step-ca, an open-source private CA that gives teams the building blocks to construct their own certificate infrastructure, including device identity, workload identity, and SSH certificates. As Smallstep has acknowledged themselves, that flexibility comes with a trade-off: you are assembling a solution, not buying one.
Key Features
Smallstep can issue both X.509 and SSH certificates via a private CA, with support for ACME, SCEP, and OIDC-based enrollment. Its short-lived certificate architecture is designed for certificates with lifespans measured in hours or days rather than months, which aligns well with the CA/B Forum's direction for the industry.
SSO integration handles certificate issuance for people, while ACME Device Attestation covers device identity.
Limitations
Smallstep is a private CA tool. It does not issue or manage public TLS certificates. With no secrets management or PAM capabilities, it is a focused PKI building block, not a platform. The CLI-first experience is well-suited to platform engineering teams but may not fit organizations that need a GUI-driven workflow for less technical users.
Pricing
step-ca is free and open source. Commercial tiers (Step CA Pro and the Device Identity Platform) are sales-gated, with no public pricing page.
Ideal For
DevOps and platform engineering teams that want automated internal PKI for Kubernetes, service meshes, and workload identity. Particularly well suited to organizations already moving toward short-lived certificates and comfortable assembling their own solution on top of open-source tooling.
7. cert-manager (open source)
Loved by Kubernetes users everywhere and a CNCF graduated project, cert-manager is a tool that allows teams to obtain, renew, and rotate certificates on the fly. With support for several issuers and the ACME protocol, it has become the default choice for certificate automation inside Kubernetes clusters, with 86% of new production clusters deploying cert-manager as standard practice.
Key Features
cert-manager is capable of automating certificate issuance and renewal natively within Kubernetes, with ACME protocol support for Let's Encrypt and other issuers.
It supports multiple issuer types, including CA, Vault, CyberArk Certificate Manager, Smallstep, Infisical, and self-signed, handles automatic renewal before expiry, and covers mTLS for pod-to-pod communication.
Limitations
cert-manager is Kubernetes and OpenShift-only. It does not manage certificates for VMs, network devices, or on-prem servers outside a cluster. There is no UI, dashboard, or management console, so configuration and management require Kubernetes expertise.
It also lacks certificate discovery for existing infrastructure, and there is no commercial support tier, though CyberArk offers an enterprise wrapper if that is required.
Pricing
Free and open source.
Ideal For
Platform engineering teams running Kubernetes that need automated TLS certificate management within clusters. Most teams use cert-manager alongside a broader CLM tool to cover non-Kubernetes infrastructure, rather than as a standalone solution.
Comparison Table
Here is a side-by-side breakdown of all seven tools across the dimensions that matter most.
| Feature | Infisical | Venafi (CyberArk) | Keyfactor | Sectigo | DigiCert | Smallstep | cert-manager |
|---|---|---|---|---|---|---|---|
| Open Source | Yes | No | Partial | No | No | Yes | Yes |
| Deployment Options | Cloud, Self-Hosted, Hybrid | Cloud, On-Prem | Cloud, On-Prem | Cloud, Hybrid | Cloud, On-Prem, Hybrid | Cloud, Self-Hosted | Self-Hosted (K8s) |
| Certificate Lifecycle Automation | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Protocol Support | ACME, EST, API | ACME, SCEP | ACME, SCEP, EST, CMP | ACME, SCEP, EST | ACME, SCEP, EST, CMPv2 | ACME, SCEP, OIDC | ACME |
| Kubernetes Native | Yes | Partial | Partial | Partial | Partial | Partial | Yes |
| Secrets Management | Yes | No | No | No | No | No | No |
| PAM Included | Yes | No | No | No | No | No | No |
| Pricing Model | Transparent | Sales-Gated | Sales-Gated | Sales-Gated | Sales-Gated | Free (OSS) / Sales-Gated | Free/Open Source |
How to Choose the Right Certificate Management Tool
The right tool will depend on your organization and team. However, here's a useful framework to keep in mind.
If you need certificates, secrets, and PAM from a single platform, Infisical is the only open-source platform on this list that covers all three. But, if you are an enterprise already running CyberArk, CyberArk Certificate Manager is the natural extension of that stack.
If post-quantum readiness is a hard requirement, Keyfactor has positioned post-quantum readiness as a core focus, with support for hybrid cryptographic models.
For teams that want CA and CLM from the same vendor, Sectigo and DigiCert both bundle issuance with lifecycle management. If your scope is purely in-cluster Kubernetes certificate automation, cert-manager is free, open-source, and purpose-built for that. If you want an internal PKI with an open-source foundation but also need secrets management down the road, Smallstep covers the PKI side while Infisical covers both.
Finally, when thinking about deployment, Infisical, Keyfactor, Venafi (CyberArk), and DigiCert all support fully self-hosted deployment, while Sectigo offers hybrid options, and Smallstep's step-ca can be self-hosted on your own infrastructure.
The 47-Day Reality
As 2029 draws closer, manual certificate management will become unsustainable for most teams. A 47-day TLS lifespan means teams that are still tracking renewals in spreadsheets or calendar reminders will face outages, not occasionally, but regularly.
Many legacy vendors might have brand recognition and enterprise sales momentum, but they also come with a high TCO and complex onboarding.
Infisical is the only open-source platform on this list that consolidates certificate lifecycle management, secrets management, and privileged access into a single product, deployable on your infrastructure.
If this sounds appealing, you can try Infisical for free or book a demo if you are evaluating for an enterprise deployment.
