Hosting companies sell, invoice, provision, and support hosting, domains, SSL certificates, and VPS servers from PNLCS, a free self-hosted billing platform with one client portal at the center. Customers browse your catalog, configure services, apply coupons, and check out, and the moment an order is paid a server module creates the account or machine on Panelica, cPanel, Plesk, DirectAdmin, HestiaCP, Proxmox VE, or Vultr. Renewals then run themselves: invoices are generated ahead of the due date, stored cards are charged with retries, reminders and late fees follow, and unpaid services suspend automatically and restore themselves once payment lands. Domain registration, transfers, renewals, WHOIS and EPP codes, and SSL issuance run through the same checkout, while customers manage their actual hosting from the portal itself, including files, mailboxes, databases, FTP accounts, subdomains, DNS records, cron jobs, and backups. Eight payment gateways share one engine, so partial payments, refunds, and credit balances behave the same everywhere. Support tickets route by department with priorities and attachments, a searchable knowledge base deflects repeat questions, and affiliates track referrals and commissions. Operators get revenue dashboards, client management with impersonation, bulk invoicing and mail, and twenty-seven reports covering income, MRR, churn, domains, and tax, all in thirty languages and sixteen themes. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.