#1 Free
Cloudflare SSL Free
Cloudflare SSL Free — often a stronger value alternative.
Seen as alt to: Namecheap PositiveSSL
Best free security tools 2026
VPN, endpoint, and security suites · 63 free alternatives · from paid-tool comparisons
#2 Free
Let's Encrypt
Let's Encrypt — often a stronger value alternative.
Seen as alt to: Namecheap PositiveSSL
#3 Free
Infisical
Infisical — often a stronger value alternative.
Seen as alt to: Doppler paid
#4 Free
Keycloak
Keycloak — free open-source identity provider (self-host).
Seen as alt to: Auth0 (Okta Customer Identity)
#5 Free
Trivy
Trivy — often a stronger value alternative.
Seen as alt to: Snyk Team
#6 Free
Semgrep OSS
Semgrep OSS — often a stronger value alternative.
Seen as alt to: Snyk Team
#7 Free
Vault Open Source
Vault Open Source — often a stronger value alternative.
Seen as alt to: HashiCorp Vault Enterprise
#8 Free
Windows Defender
Free or open option commonly used instead of paid security tools.
Seen as alt to: ClipCloud
#9 Free
Windows Defender
Free or open option commonly used instead of paid security tools.
Seen as alt to: ClipStack
#10 Free
Authentik
Authentik — free open-source identity provider.
Seen as alt to: Auth0 (Okta Customer Identity)
#11 Free
BleachBit
BleachBit — often a stronger value alternative.
Seen as alt to: CCleaner Professional
#12 Free
Infisical
Infisical — often a stronger value alternative.
Seen as alt to: HashiCorp Vault Enterprise
#13 Free
Keycloak
Keycloak — often a stronger value alternative.
Seen as alt to: Okta Workforce
#14 Free
OWASP Dependency-Check
OWASP Dependency-Check — often a stronger value alternative.
Seen as alt to: Snyk Team
#15 Free
SOPS + age
SOPS + age — often a stronger value alternative.
Seen as alt to: Doppler paid
#16 Free
Vault OSS
Vault OSS — often a stronger value alternative.
Seen as alt to: Doppler paid
#17 Free
Windows Defender
Windows Defender — often a stronger value alternative.
Seen as alt to: Norton 360
#18 Free
Windows Defender
Windows Defender — often a stronger value alternative.
Seen as alt to: Bitdefender Total Security
#19 Free
Windows Defender
Windows Defender — often a stronger value alternative.
Seen as alt to: McAfee+
#20 Free
Windows Defender
Windows Defender — often a stronger value alternative.
Seen as alt to: Kaspersky Standard
#21 Free
Windows Defender
Windows Defender — often a stronger value alternative.
Seen as alt to: ESET HOME Security
#22 Free
Bloat Bouncer
Cut digital bloat — cleaner devices, fewer junk apps
Seen as alt to: Norton 360 · CleanMyMac X · CCleaner Professional
#23 Free
Authentik
Authentik — often a stronger value alternative.
Seen as alt to: Okta Workforce
#24 Free
Proton VPN Free
Proton VPN Free — unlimited free plan with honest limits (servers/speed).
Seen as alt to: NordVPN