SubdomainWatch

Free supply chain security for individual developers, small teams, and open source projects. Includes a free app and firewall CLI tool to protect your code from vulnerable and malicious dependencies. Detects 70+ indicators of supply chain risk.

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.

Free website security check and malware scanner

Free website security check, site antivirus, and server firewall (WAF) for PHP. Email notifications for registered users in the free tier.

REST API for fetching the information on the breaches.

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.

Universal Secrets Manager for application secrets and config, with support for syncing to various cloud providers. Free for five users with basic access controls.

Manage SSL Certificate issuance, renewal, and monitoring. Search the Certificate Transparency Logs. Free for 3 certificates and 1 user after the beta.