SSL Toolkit is a free Android application developed by Feuerberg Software that provides useful tools to assist users in their daily work with SSL certificates. With its many features, this app is a must-have for anyone who works with SSL certificates.

One of the standout features of SSL Toolkit is the ability to check installed certificates and TLS versions. The app also allows users to search Certificate Transparency Logs and view them in real-time. Other features include PKCS7 and PKCS12 converters, the ability to generate self-signed certificates, and RSA/ECC CSR management. The app also includes a PEM parser that supports X509, PKCS7, and CSR in PEM format, as well as an OCSP check, IDN converter, Base64 converter, and a root/intermediate search. It should be noted that some features are only available in the Pro version, which requires an upgrade.

Overall, SSL Toolkit is a valuable tool for anyone who works with SSL certificates. It provides a wide range of features that are easy to use and navigate. The only downside is that some features require an upgrade to the Pro version, but the free version still offers plenty of helpful tools.