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Head-to-head · Certificate Management Software

ManageEngine Key Manager Plus vs DigiCert ONE

  • Updated Sep 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score ManageEngine Key Manager Plus #2 in Certificate Management Software 8.4/10 Free plan · paid from $59/mo · 30-day trial Free plan✓ 5 of 5 features Visit ManageEngine
DigiCert ONE #3 in Certificate Management Software 8.2/10 Pricing on request ✓ 5 of 5 features Visit DigiCert ONE

ManageEngine Key Manager Plus leads on 1 check, DigiCert ONE on 0, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreManageEngine Key Manager Plus · 8.4/10
  • Free planonly ManageEngine Key Manager Plus

ManageEngine Key Manager Plus scores higher on our rubric for certificate management software: 8.4 against 8.2 out of 10; our editors rank them #2 and #3.

ManageEngine Key Manager Plus offers free plan; DigiCert ONE doesn't publish it.

ManageEngine Key Manager Plus is the better fit for budget-conscious teams needing broad management. DigiCert ONE is the better fit for large organizations needing full lifecycle control.

  • ManageEngine Key Manager Plus fits best

    Budget-conscious teams needing broad management

  • DigiCert ONE fits best

    Large organizations needing full lifecycle control

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature ManageEngine Key Manager Plus 8.4/10 Visit ↗ DigiCert ONE 8.2/10 Visit ↗
At a glance
Editor score 8.4 8.2
Ranking #2 in Certificate Management Software #3 in Certificate Management Software
Best for Budget-conscious teams needing broad management Large organizations needing full lifecycle control
Pricing model Free plan + paid Paid
Starting price $59/mo Not published
Free plan ✓ (best) Not published
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web, Windows, Linux Web
Support Email, Phone, Community, Docs Email, Live chat, Phone, Docs · 24/7
Integrations 11 integrations 12 integrations
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features ManageEngine Key Manager Plus 5/5 · DigiCert ONE 5/5
Certificate discovery ✓ ✓
Automatic renewal ✓ ✓
Deployment automation ✓ ✓
Revocation workflows ✓ ✓
CA integrations ✓ ✓
Specs
Certificate types Tls Tls
Our review
Pros
  • Discovers certificates across servers, domains, cloud environments, and certificate stores
  • Automates renewal alerts, deployment, post-deployment actions, and revocation
  • Connects with major certificate authorities, cloud platforms, and ITSM tools
  • Discovers and inventories certificates across networks, cloud, servers, and containers
  • Automates renewal, installation, delivery, and revocation workflows
  • Connects with major public and private certificate authorities and cloud platforms
Cons
  • The free edition is limited to five keys
  • Multiple licensing structures make price comparison less direct
  • Does not include AI features
  • Pricing requires contacting sales or signing in for plan comparison
  • Its broad trust-management scope may exceed narrow TLS requirements
  • Lifecycle governance can be more than smaller teams need
Our verdict

ManageEngine Key Manager Plus is a certificate lifecycle management product for IT teams overseeing SSL/TLS certificates across enterprise environments. It discovers certificates across servers, domains, load balancers, mail servers,…

Read the review →

DigiCert ONE is a digital trust platform that brings together PKI, DNS, certificate lifecycle management, and related trust workflows. Its certificate capabilities cover discovery, inventory, issuance, renewal, deployment, revocation, and…

Read the review →
  1. ManageEngine Key Manager PlusCertificate Management Software 8.4Free plan · paid from $59/mo · 30-day trial
  2. DigiCert ONECertificate Management Software 8.2Pricing on request

Strengths and trade-offs

  • ManageEngine Key Manager Plus — where it wins

    • Discovers certificates across servers, domains, cloud environments, and certificate stores
    • Automates renewal alerts, deployment, post-deployment actions, and revocation
    • Connects with major certificate authorities, cloud platforms, and ITSM tools

    Where it doesn't

    • The free edition is limited to five keys
    • Multiple licensing structures make price comparison less direct
    • Does not include AI features
  • DigiCert ONE — where it wins

    • Discovers and inventories certificates across networks, cloud, servers, and containers
    • Automates renewal, installation, delivery, and revocation workflows
    • Connects with major public and private certificate authorities and cloud platforms

    Where it doesn't

    • Pricing requires contacting sales or signing in for plan comparison
    • Its broad trust-management scope may exceed narrow TLS requirements
    • Lifecycle governance can be more than smaller teams need
  • ManageEngine Key Manager Plus8.4/10 · Free plan · paid from $59/mo · 30-day trial

    Broad certificate discovery and automation with flexible licensing and a five-key free edition.

    Visit ManageEngineFull verdict →
  • DigiCert ONE8.2/10 · Pricing on request

    Full certificate lifecycle control for large organizations managing diverse trust environments.

    Visit DigiCert ONEFull verdict →

More comparisons

Guides on certificate management software

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update