ZeroSSL is a certificate authority that issues SSL/TLS certificates, with a free tier, ACME automation, a REST API and optional website protection scans. It suits site owners, developers and agencies who want to secure domains without a complicated setup.
Save 25% on all yearly plans, including Basic, Premium and Business. You can also take $204 off the annual Premium plan, or start free with 90-day SSL certificates. None of these deals need a code.