CERTivity is a powerful multi-platform visual tool for creating, managing, and handling different key store types (such as JKS, JCEKS, PKCS12, the Bouncy Castle types BKS and UBER, and Windows Native), public, private and secret keys in different formats (PKCS, OpenSSL, RSA/DSA, etc.), certificates (version 1 and 3), and certificates chains. It allows you to import and export keys, key pairs and certificates, manage certificate extensions, extend the validity period for self-signed certificates, test certificates, obtain revocation status, convert from one key store type to another, and much more.
What's new in CERTivity KeyStores Manager
This version added the ability to discover all of the Java CA Truststores on the current system. It can sign and verify signatures on "APK" (Android Application Package) files and can retrieve SSL certificates simply by pasting a HTTPS URL.