Security

57 services

This category spans several jobs: scanning code and dependencies (semgrep, Socket, Aikido Security, GitGuardian), managing secrets (Infisical, Doppler, SnapEnv), protecting live traffic (Cloudflare Application Services, Cloudflare Zero Trust) and checking a deployed site's configuration (SSL Labs, Mozilla Observatory, Internet.nl). Risk APIs such as FraudLabs Pro and LayerCall score transactions, IP addresses and signups.

For code scanning, limits usually count repositories or contributors: semgrep covers up to 10 contributors on 10 private repos, plus any number of public ones, Aikido Security 10 repos and 2 users, and GitGuardian 25 developers. Secrets managers count seats: Infisical allows 5 developers, Doppler 5 users and Dotenv 3 teammates. The dependency monitors pyup.io and meterian.io cover one private project and any number of open-source ones.

Many useful tools here need no plan at all. Let's Encrypt issues trusted TLS certificates through ACME, SSL Labs grades a server's TLS setup, and Have I been pwned? checks accounts against known breaches. Cloudflare covers DNS, caching, SSL and DDoS protection for unlimited domains, and Zero Trust allows 50 users. Scan only systems you own or have permission to test.

57 services

Aikido Security

Application security platform combining SAST, SCA, DAST, secrets, IaC, container and cloud scanning.

10 repos

2 users, 1 cloud, 2 containers, 1 domain

Visit
AlertKick

Uptime checks, heartbeats, on-call alerts and status pages, plus an eBPF Linux security agent.

10 monitors

5-min interval, 7 days retention

Visit
Bearer

Privacy audits and ongoing workflows that help teams meet GDPR and similar rules.

Small teams, SaaS only

Visit
CertKit

Certificate lifecycle tool that issues, renews and monitors SSL certs, plus CT log search.

3 certificates

1 user

Visit
CertPost

TLS certificate monitoring that inspects the served chain on any port and alerts by email or webhook before expiry.

3 certificates

Visit

Zero-trust access, secure web gateway and device connectivity for teams.

50 users

24 hrs activity logs, 3 network locations

Visit
Corgea

Security scanner that detects, validates and auto-fixes vulnerable code and packages in 20+ languages.

1 user

2 repos

Visit
Doppler

Secrets and config manager that syncs environment values to cloud providers.

5 users

Visit
Dotenv

Encrypted syncing and sharing of .env files across a team.

3 teammates

Visit
FraudLabs Pro

Fraud screening API that scores orders for card payment fraud and chargeback risk.

500 transactions/mo

Visit
GitGuardian

Secrets detection that scans Git repositories for 350+ kinds of credentials and sensitive files.

25 developers

Visit
HimitsuShell

Compiler that packs shell scripts into obfuscated executables with anti-debugging, an shc alternative.

Unlimited web edition use

Visit
hostedscan.com

Hosted vulnerability scanning for web apps, servers and networks.

10 scans/mo

Visit
Infisical

Secrets management for teams, from local development through production and third-party services.

  • Open source

5 developers

Visit
inspect.software

Published audits of open-source repos grading security, maintainability, dependencies and malicious packages.

100 starting credits

5 inspections, All published reports

Visit
IP99

IP reputation and location lookups, plus passive DNS and CT log search.

  • No sign-up

500 IP lookups/day

10 domain lookups/day

Visit
ipapi.is

IP lookup API with strong detection of hosting and datacenter IP ranges.

  • No sign-up

1,000 lookups

Visit
LayerCall

Risk scoring API for IPs, emails, phones, domains and devices, plus Web Bot Auth checks for AI agents.

  • No card

1,000 lookups/mo

Visit
LoginLlama

API that flags suspicious or fraudulent sign-in attempts and alerts the affected users.

1,000 logins/mo

Visit

Cloud log collection and SIEM from ManageEngine for security and audit analysis.

50 GB storage

15 days retention, 7 days searchable

Visit
meterian.io

Dependency vulnerability monitoring for JVM, JavaScript, Node.js, .NET and Ruby projects.

1 private project

Unlimited open-source projects

Visit
NextDNS

DNS-level firewall that blocks ads, trackers and malicious domains.

300,000 queries/mo

Visit
Otterwatch

Daily certificate monitoring with expiry alerts, chain and OCSP checks and CT issuance history.

  • No card

5 domains

Visit
PromoProxy

Cloud secure web gateway filtering staff internet traffic.

5 users

1 GB/day

Visit
Protectumus

Website security scanner, antivirus and PHP application firewall.

Email alerts for registered users

Visit
ProxySentry

IP lookup API that flags VPN users and residential proxy traffic, offered via RapidAPI.

10,000 requests/mo

Visit
pyup.io

Python dependency scanner that flags vulnerable packages and opens update pull requests.

1 private project

Unlimited open-source projects

Visit
semgrep

Static analysis and dependency scanning for security bugs in code.

10 contributors

10 private repos, Unlimited public repos

Visit
S
SignupVet

Signup screening API scoring the email, phone number and IP of new registrations.

  • No card

250 checks/mo

Visit
SikkerKey

Secrets manager where machines authenticate to fetch credentials.

20 secrets

2 projects, 2 machines, 7-day audit log

Visit
Smart Grow Vault

Hosted store for application secrets and environment variables.

150 secrets per project

3 applications

Visit
SnapEnv

Encrypted environment variable store for teams, with command-line tool, Kubernetes integration and audit trail.

3 projects

3 members, 3 environments per project

Visit
Socket

Dependency supply-chain scanner and CLI firewall that blocks risky or malicious packages.

Individuals and small teams

Visit
Virgil Security

SDKs and services for E2E encryption, protecting databases and securing IoT devices.

250 users

Visit
Zoho Vault

Password manager with an encrypted vault, autofill and secure sharing.

  • Personal use

Individuals only

Visit
crypteron.com

Data encryption and protection platform for .NET and Java applications.

Limits not listed

Visit
C
CyberChef

Browser tool for encoding, decoding, encrypting and analysing data through chained operations.

  • Open source

Limits not listed

Visit
Datree

CLI that validates Kubernetes manifests and Helm charts against policies to stop misconfigurations.

  • Open source

Limits not listed

Visit
DJ Checkup

Automated scanner that checks a Django site for common security misconfigurations.

Limits not listed

Visit
FOSSA

Open-source dependency management covering license compliance and vulnerability scanning.

Limits not listed

Visit
g
get.localhost.direct

Publicly trusted wildcard SSL certificate for *.localhost.direct, for HTTPS in local development.

  • No sign-up

Limits not listed

Visit
HasMySecretLeaked

Lookup that checks whether a secret appears among leaks found in public GitHub data.

Limits not listed

Visit
Have I been pwned?

Data breach lookup service with a REST API for checking breached accounts.

Limits not listed

Visit
Internet.nl

Checker for a domain's support of modern standards: IPv6, DNSSEC, HTTPS, DANE and mail security.

Limits not listed

Visit
Keybase

Open-source encrypted chat and file sharing for teams, families and communities.

  • Open source

Limits not listed

Visit
Let's Encrypt

Certificate authority issuing browser-trusted TLS certificates through ACME automation.

Limits not listed

Visit
LocalCert

Subdomains under localcert.net that public CAs will certify, for private network hosts.

Limits not listed

Visit
Mozilla Observatory

Scanner that grades a website's security headers and configuration with fix advice.

Limits not listed

Visit
Proton Pass

Password manager with email aliases, 2FA codes, passkeys and sharing across all platforms.

Limits not listed

Visit
qualys.com

Community edition of Qualys scanning for web app vulnerabilities and OWASP risks.

Limits not listed

Visit
SSL Labs

Deep analysis of a public web server's SSL/TLS setup with a letter grade.

Limits not listed

Visit
SubdomainWatch

Attack surface monitoring for subdomain takeover risk, with a DNS scanner and SARIF GitHub Action.

Limits not listed

Visit
Sucuri SiteCheck

Remote scanner that checks a website for malware, blocklisting and known issues.

Limits not listed

Visit
TestTLS.com

Checker for TLS servers on any protocol, covering configuration, certificates and chains.

Limits not listed

Visit
Esc

Type to search every entry. ↑↓ to move, Enter to open.