1. Pricing Structure: Cloudsmith Package offers a flexible pricing model based on usage and storage, while packagecloud.io provides fixed monthly pricing plans based on the number of repositories and support levels, making it easier for users to predict costs in advance.

2. Supported Package Types: Cloudsmith Package supports a wide range of package types including binaries, containers, and modules, whereas packagecloud.io primarily focuses on supporting Debian and RPM packages, limiting the range of formats that can be hosted.

3. Security Features: Cloudsmith Package offers advanced security features such as access control, encryption at rest, and vulnerability scanning, ensuring secure package management, while packagecloud.io provides basic security measures like SSL encryption, potentially exposing vulnerabilities in the package repository.

4. Customization Options: Cloudsmith Package offers extensive customization options for branding, access controls, and integrations with third-party tools, allowing for a more personalized package management experience, whereas packagecloud.io has limited customization capabilities, restricting the ability to tailor the platform to specific needs.

5. Scalability and Performance: Cloudsmith Package is designed for high scalability and performance, ensuring fast and reliable package delivery even under heavy loads, while packagecloud.io may experience performance issues and downtime during peak usage periods due to limited scalability.

6. Collaboration Tools: Cloudsmith Package provides collaboration tools like team management and audit logs to facilitate teamwork and compliance tracking, whereas packagecloud.io lacks such features, making it less suitable for teams or organizations requiring extensive collaboration capabilities.

In Summary, Cloudsmith Package and packagecloud.io differ in pricing structure, supported package types, security features, customization options, scalability and performance, and collaboration tools.