Compare 53 free security tools, free tiers, and developer deals. 1 requires an application or qualification. Verified pricing for Snyk, Fingerprint, SonarQube Cloud, 1Password, Socket.dev and more.
What this name holds: Code and dependency scanning, threat intel and network access control — the broad security suites, including 1Password.
3 other names here answer “who is allowed in, and where are the secrets kept”, and each holds a different list: Auth (30), Password Managers (7), Secrets Management (4).
We track 53 security services with a free tier we hold as current. This category has seen some movement — 10 pricing changes recorded across vendors.
| Vendor | Tier | Description | Verified |
|---|---|---|---|
| Snyk | Free | Developer security — 200 open-source SCA tests/month, 100 SAST (Snyk Code) tests/month, 100 container tests/month, 300 IaC tests/month. Unlimited contributing developers. Code and dependency scanning across all products. | 2026-08-31 |
| Fingerprint | Free | Device identification and fraud prevention — 1,000 API calls/month free. Browser fingerprinting, bot detection, and account fraud prevention. Useful for auth flows, anti-fraud, and bot detection in apps. | 2026-08-15 |
| SonarQube Cloud | Free | Code quality and security analysis — free and unlimited for open-source projects, 15+ languages, CI/CD integration. Formerly SonarCloud. | 2026-08-23 |
| 1Password | OSS Teams | Free Teams account for open source projects — includes full platform access (Mac, Windows, iOS, Android, Linux, browser), SSH key management, Git commit signing, and secrets management. Non-expiring membershipRestricted to oss (1Password for Open Source Projects) applicants — not generally available.Eligibility: Active open source project; Project 30+ days old and actively maintained; Uses permissive open source license | 2026-08-23 |
| Socket.dev | Free | Superseded: As of 2026-09-07, socket.dev/pricing reads: Free: $0 per month, per developer. Unlimited developers & repos. 1,000 scans per month. 500 API quota per hour. 3 members, 1 repository label. We are not publishing our stored Socket.dev terms beside it — our own pricing change record, discovered 2026-09-07, names them as the previous ones. Read what we recorded ↓ | 2026-08-26 |
| GitGuardian | Free | Secrets detection for up to 25 developers — 420+ secret types, unlimited real-time scanning, 500 historical scan detections, CLI (ggshield) for pre-commit hooks, VSCode extension, 10K API calls/month | 2026-09-06 |
| FOSSA | Free | Open source license compliance and software composition analysis (SCA). Free tier: 5 projects, 10 contributing developers, 1 release group, 5 dependency levels, container scanning, SBOM export, API access | 2026-09-08 |
| Twingate | Free | Zero trust network access — Starter plan free forever: 5 users, 10 remote networks. Replace traditional VPNs with identity-based access to internal resources | 2026-08-25 |
| Tailscale | Personal | Mesh VPN with WireGuard — 6 users, unlimited devices, MagicDNS, exit nodes, subnet routing. Free Personal plan. | 2026-09-05 |
| Semgrep | Free | Superseded: As of 2026-08-28, semgrep.dev/pricing reads: Free Edition: Cross-file analysis with Pro rules, AI-powered detection, triage, and remediation, 60 AI credits included, Fast CI/CD deploy via Semgrep infrastructure, Scan up to 10 repositories, Maximum 10 contributors, Authentication via GitHub/GitLab. We are not publishing our stored Semgrep terms beside it — our own pricing change record, discovered 2026-08-28, names them as the previous ones. Read what we recorded ↓ | 2026-07-05 |
| URLscan.io | Free | URL and website security scanner API — free tier: 50 private scans/day, 1,000 unlisted scans/day, 5,000 public scans/day, 1,000 search requests/day, 10,000 result requests/day | 2026-09-04 |
| VirusTotal | Community (Free) | Malware and URL analysis API (Google) — free community tier: 500 requests/day, 4 requests/minute. Scan files, URLs, domains, IPs against 70+ antivirus engines. Non-commercial use only | 2026-08-25 |
| FraudLabs Pro | Free | Screen an order transaction for credit card payment fraud. This REST API will detect all possible fraud traits based on the input parameters of an order. The Free Micro plan has 500 transactions per month. | 2026-07-06 |
| LoginLlama | Free | A login security API to detect fraudulent and suspicious logins and notify your customers. Free for 1,000 logins per month. | 2026-08-28 |
| aikido.dev | Free | All-in-one appsec platform covering SCA, SAST, CSPM, DAST, Secrets, IaC, Malware, Container scanning, EOL,... Free plan includes two users, scanning of 10 repos, 1 cloud, 2 containers & 1 domain. | 2026-07-11 |
| CertKit | Free | Manage SSL Certificate issuance, renewal, and monitoring. Search the Certificate Transparency Logs. Free for 3 certificates and 1 user after the beta. | 2026-07-10 |
| Corgea | Free | Free autonomous security platform that finds, validates and fixes insecure code and packages across +20 languages and frameworks. Free plan includes 10 repos, 10 PR scans/month, and 10 SAST auto fixes. Features: AI SAST, Logic/Auth Scanning, Dependency Scanning, Secrets Detection, Container Scanning, IaC Scanning. | 2026-09-08 |
| crypteron.com | Free | Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications | 2026-07-12 |
| CyberChef | Free | A simple, intuitive web app for analyzing and decoding/encoding data without dealing with complex tools or programming languages. Like a Swiss army knife of cryptography & encryption. All features are free to use, with no limit. Open source if you wish to self-host. | 2026-07-11 |
| Datree | Free | Open Source CLI tool to prevent Kubernetes misconfigurations by ensuring that manifests and Helm charts follow best practices as well as your organization’s policiesDatree's pricing page has not resolved for us since 2026-07-10. | 2026-07-10 |
| DJ Checkup | Free | Scan your Django site for security flaws with this free, automated checkup tool. Forked from the Pony Checkup site. | 2026-07-06 |
| Dotenv | Free | Sync your .env files, quickly & securely. Stop sharing your .env files over insecure channels like Slack and email, and never lose an important .env file again. Free for up to 3 teammates. | 2026-07-11 |
| Have I been pwned? | Free | REST API for fetching information on data breaches. Free web search; API requires subscription for some endpoints. | 2026-07-09 |
| Internet.nl | Free | Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE | 2026-07-11 |
| letsencrypt.org | Free | Free SSL Certificate Authority with certs trusted by all major browsers | 2026-09-07 |
| meterian.io | Free | Monitor Java, Javascript, .NET, Scala, Ruby, and NodeJS projects for security vulnerabilities in dependencies. Free for one private project, unlimited projects for open source. | 2026-07-06 |
| Mozilla Observatory | Free | HTTP security header testing tool. Now integrated into MDN as HTTP Observatory. | 2026-07-10 |
| Public Cloud Threat Intelligence | Free | High confidence Indicator of Compromise(IOC) targeting public cloud infrastructure, A portion is available on github (https://github.com/unknownhad/AWSAttacks). Full list is available via API | 2026-07-11 |
| Safety | Free | AI-powered development security platform (rebranded from PyUp). Free: 1 codebase, 100 scans/month, 1 user, non-commercial only. Uses public vulnerability databases (Safety's proprietary 4x database requires paid plan). Email support with 48-hour response. | 2026-08-16 |
| qualys.com | Free | Find web app vulnerabilities, audit for OWASP Risks | 2026-07-08 |
| Smart Grow Vault | Free | Secure Enterprise-grade platform for managing environment variables and secrets. Free tier includes up to 3 applications and 150 secrets per project. | 2026-07-10 |
| SOOS | Free | Free, unlimited SCA scans for open-source projects. Detect and fix security threats before release. Protect your projects with a simple and effective solution.SOOS's pricing page has not resolved for us since 2026-05-23. | 2026-05-23 |
| ssllabs.com | Free | Intense analysis of the configuration of any SSL web server | 2026-07-13 |
| Sucuri SiteCheck | Free | Free website security check and malware scanner | 2026-07-09 |
| TestTLS.com | Free | Test an SSL/TLS service for secure server configuration, certificates, chains, etc. Not limited to HTTPS. | 2026-07-12 |
| Virgil Security | Free | Tools and services for implementing end-to-end encryption, database protection, IoT security, and more in your digital solution. Free for applications with up to 250 users. | 2026-07-08 |
| Bearer | Free | Helps implement privacy by design via audits and continuous workflows so that organizations comply with GDPR and other regulations. The free tier is limited to smaller teams and the SaaS version only. | 2026-07-19 |
| Iubenda | Free | Privacy and cookie policies and consent management. The free tier offers limited privacy and cookie policy as well as cookie banners. | 2026-08-28 |
| Ketch | Free | Consent management and privacy framework tool. The free tier offers most features with a limited visitor count. | 2026-07-20 |
| RandomKeygen | Free | A free mobile-friendly tool that offers a variety of randomly generated keys and passwords you can use to secure any application, service, or device. | 2026-08-28 |
| Pareto Security | Free | Pareto Cloud is free for up to 5 devices, with no credit card required. The free tier includes the cloud dashboard, alerts to email, Slack and Teams, and the API. Paid Team and Business plans are priced per device per month. The macOS, Linux and Windows apps are open source. | 2026-09-02 |
| Gitleaks | Open Source | Open source (MIT) secret scanner for git repositories, files, and directories. CLI tool is free with no limits. GitHub Action free for personal repos and 1 org repo. | 2026-07-30 |
| TruffleHog | Open Source | Open source (Apache 2.0) secret scanner for git repos, Docker images, S3, Slack, and 20+ sources. Detects 800+ credential types with active API verification. | 2026-07-30 |
| Checkov | Open Source | Open source (Apache 2.0) IaC static analysis. Scans Terraform, CloudFormation, Kubernetes, Helm, Dockerfile, and 10+ frameworks for misconfigurations. No usage limits. | 2026-07-29 |
| Trivy | Open Source | Open source (Apache 2.0) multi-target vulnerability scanner for container images, filesystems, git repos, IaC, Kubernetes, SBOMs, and cloud resources. | 2026-08-01 |
| Grype | Open Source | Open source (Apache 2.0) vulnerability scanner for container images and filesystems. Covers 20+ language ecosystems with daily-updated CVE database. | 2026-07-25 |
| OWASP ZAP | Open Source | Open source (Apache 2.0) web application security scanner. Passive/active scanning, AJAX spider, fuzzing, manual interception, CI/CD integration. No usage limits. | 2026-07-25 |
| Nuclei | Open Source | Open source (MIT) vulnerability scanner with YAML-based template system. 9,000+ community templates for web apps, APIs, networks, DNS, SSL. No usage limits. | 2026-07-30 |
| CodeQL | Free | GitHub semantic code analysis engine. Free for all public repositories with no scan limits. Supports JS/TS, Python, Java, C#, C/C++, Go, Ruby. Integrated into GitHub Actions. | 2026-07-25 |
| Dependabot | Free | Free automated dependency updates and vulnerability alerts for all GitHub repos. Generates pull requests for updates across 30+ ecosystems (npm, pip, Maven, Go, Docker, etc.). | 2026-07-24 |
| Renovate | Open Source | Open source (AGPL-3.0) automated dependency update bot. Supports 90+ package managers. Available as self-hosted CLI or free hosted GitHub/GitLab App by Mend. | 2026-08-26 |
| Probely | Free | Free plan with 5 scan hours/month for web application and API vulnerability scanning, up to 3 users, full API access. No credit card required. | 2026-08-28 |
| Falco | Open Source | CNCF Graduated (Apache 2.0) runtime security tool. Monitors Linux syscalls and Kubernetes events to detect threats in containers, hosts, and cloud environments in real time. | 2026-08-26 |
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