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2 tools

Caddy project (sponsored by ZeroSSL) · Reverse proxies & web servers

Go web server and reverse proxy that obtains and renews TLS certificates automatically and is configured with a short Caddyfile or a JSON API

Apache-2.0Open sourceFreeSelf-hostedNov 2, 2026

Internet Security Research Group (ISRG) · DNS & domains

Nonprofit certificate authority that issues free, automatically renewable TLS certificates through the ACME protocol

MPL-2.0FreeNov 2, 2026

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