Android stores CA certificates in its Java keystore in /system/etc/security/cacerts.bks. I copied the file to my computer, added my certificate using portecle 1.5 and pushed it back to the device. Source: about 1 year ago

Portecle provides a user-friendly GUI for creating, managing and examining key- and certificate-related information. Allows you to easily interact with and keep track of you keystores, keys, certificates, certificate requests, certificate revocation lists and more. Appreciation for the recommendation goes to peanutbuttersmack. Source: about 2 years ago

Launched in 2016, Let's Encrypt is a non-profit CA that provides basic domain-validated (DV) SSL certificates at no cost. Their goal is to encrypt the entire web by removing cost barriers that prevent some sites from enabling SSL. - Source: dev.to / about 1 month ago

Traefik : A modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing infrastructure components and configures itself automatically and dynamically. it's also well integrated with Let's Encrypt (Alternatives : HAProxy, Kong, NGINX). - Source: dev.to / about 2 months ago

Cert-manager is a CRD (Custom Resource Definition) that dynamically generates TLS/SSL certificates for our applications using Let's Encrypt (although it also supports other issuers). - Source: dev.to / 3 months ago

Letsencrypt.org — Free SSL Certificate Authority with certs trusted by all major browsers. - Source: dev.to / 4 months ago

Install Certbot Certbot is a CLI that helps to obtain and maintain Let's Encrypt cert. - Source: dev.to / 5 months ago