In my opinion, the most important features in code signing tools are strong encryption standards, easy certificate management, and seamless integration with development pipelines. A good tool should support multiple platforms and automate the signing process to reduce human error and speed up releases. Features like secure key storage, audit logs, and timestamping are also essential for maintaining trust and tracking changes over time. I also think usability matters a lot, so developers can quickly sign and verify code without adding unnecessary complexity to the workflow while still ensuring strong security protection.