FiloSottile is an independent open-source developer whose compact, security-focused utilities have quietly become essential plumbing for modern software workflows. The age encryption tool offers a minimalist, command-line alternative to GPG: single-pass file and stream encryption driven by tiny, typed keys that can be passed through pipes, scripts, and CI jobs without configuration files or legacy compatibility baggage. It is routinely embedded in backup scripts, shell one-liners, and Go applications that need durable, forward-secret data protection without the overhead of a full PKI. Complementing age, mkcert eliminates the friction of generating TLS certificates for localhost development. With one invocation it bootstraps a local certificate authority trusted by the system browser, then mints certificates for any hostname or IP address a developer might need—whether testing a React app on https://localhost, spinning up a Docker-compose cluster, or provisioning micro-services on wildcard subdomains. The tool is dependency-free, cross-platform, and fits neatly into automation scripts, Vagrant provisioning, or language-specific task runners that require encrypted connections during integration tests. Together, these two utilities distill complex cryptographic operations into single binaries that behave like standard UNIX filters, making strong security the path of least resistance for engineers, DevOps teams, and open-source hobbyists alike. FiloSottile’s software can be downloaded free of charge from get.nero.com, where installers are sourced from trusted Windows package managers such as winget, always deliver the latest upstream release, and can be pulled in bulk alongside other applications.