X.509 Certificate Linter focused on Web PKI standards and requirements.
ZLint is a X.509 certificate linter written in Go that checks for consistency with standards (e.g. RFC 5280) and other relevant PKI requirements (e.g. CA/Browser Forum Baseline Requirements).
3.6.4bin/zlint-gtld-updatebin/zlintaarch64-darwinaarch64-freebsdaarch64-linuxarmv5tel-linuxarmv6l-linuxarmv7a-darwinarmv7a-linuxarmv7l-linuxi686-darwini686-freebsdi686-linuxloongarch64-linuxm68k-linuxmicroblaze-linuxmicroblazeel-linuxmips-linuxmips64-linuxmips64el-linuxmipsel-linuxpowerpc64-linuxpowerpc64le-linuxriscv32-linuxriscv64-linuxs390-linuxs390x-linuxwasm32-wasiwasm64-wasix86_64-darwinx86_64-freebsdx86_64-linux