Free SSH & DevOps Tools

Generate RSA, Ed25519, and ECDSA SSH keys securely in your browser.

Test if SSH port 22 is open on any server. Diagnose firewall and connection issues.

Generate ~/.ssh/config entries visually. Build config files with host aliases, jump hosts, and identity files.

Validate SSH public and private keys. Check key type, format, fingerprint, and comment.

Convert PEM SSH keys to PPK format for PuTTY. Validate keys and get step-by-step conversion instructions.

Check SSL/TLS certificate validity, expiry, chain, and issuer for any domain. Color-coded expiry warnings.

Decode X.509 PEM certificates. View subject, issuer, validity, SANs, key usage, and SHA fingerprints.

Visual chmod calculator. Toggle owner/group/other permissions, see octal (755) and symbolic (rwxr-xr-x) live.

Generate htpasswd entries for Apache, Nginx, and Traefik basic auth. bcrypt, apr1, MD5, and SHA-1.

Generate, validate, and translate cron expressions. Visual cron builder with human-readable descriptions.

Convert cron expressions to systemd .service and .timer files with OnCalendar syntax.

Generate systemd .service, .timer, and .socket unit files visually. Set ExecStart, User, Restart, env vars, and Install target.

Validate systemd unit files. Paste a .service, .timer, .socket, or .mount file and catch missing directives, bad syntax, and errors.

Visual builder for ecosystem.config.js. Configure cluster mode, env vars, watch, and max_memory_restart.

Convert a PM2 app entry into a systemd .service unit file with cluster template support.

Generate nginx.conf from form inputs. Reverse proxy, SSL, static files, load balancer, and basic auth — all common modes.

Convert nginx server blocks to Caddyfile syntax. Maps reverse_proxy, TLS, redirects, and headers.

Generate Traefik v2/v3 Docker labels visually. Build host rules, TLS, redirects, basic auth, and middleware.

Build docker-compose.yml visually. Add services, volumes, networks, env vars — with live YAML and lint warnings.

Build Dockerfiles from form inputs. Multi-stage builds, healthchecks, and best-practice hints inline.

Cross-platform firewall rule builder (UFW, iptables, nftables, Windows, AWS, GCP). Also explains existing rules.

Convert iptables rules to nftables. Translates chains, NAT, conntrack, and common matchers.

Build rsync commands visually. Local or remote source/destination, flag toggles, exclude patterns, and presets.

Paste any rsync command and instantly see what every flag does, with risky-flag warnings.

Generate a bash setup script for a fresh Ubuntu or Debian VPS. Hardens SSH, configures UFW, fail2ban, Docker, and unattended upgrades.