1. Amazon S3: Amazon Simple Storage Service (S3) is a highly scalable cloud storage service provided by Amazon Web Services (AWS). It offers durable, secure, and scalable object storage for various types of data.

2. Microsoft Azure Blob Storage: Azure Blob Storage is a cloud storage service provided by Microsoft Azure. It allows businesses to store and retrieve large amounts of unstructured data, such as images, videos, documents, and backups.

3. Google Cloud Storage: Google Cloud Storage is a flexible and scalable object storage service offered by Google Cloud Platform. It provides secure and durable storage for various types of data, along with features like data encryption, versioning, and lifecycle management.

4. Dropbox: Dropbox is a popular cloud storage service that allows users to store, sync, and share files across multiple devices. It offers features like file versioning, collaboration tools, and integration with other applications.

5. Box: Box is a cloud content management and collaboration platform that provides secure file storage, sharing, and collaboration features for businesses. It offers features like access controls, workflow automation, and integration with other business applications.

6. Nextcloud: Nextcloud is an open-source, self-hosted cloud storage solution that allows individuals and organizations to have full control over their data. It provides features like file synchronization, sharing, collaboration, and integration with existing infrastructure.

7. ownCloud: ownCloud is another open-source, self-hosted cloud storage platform that offers similar features to Nextcloud. It allows users to securely store, access, and share files across devices and provides integration options with existing systems.

8. Seafile: Seafile is an open-source cloud storage and file synchronization platform that offers end-to-end encryption, file versioning, and collaboration features. It can be self-hosted or used as a service provided by the Seafile company.

9. pCloud: pCloud is a cloud storage service that offers secure file storage, synchronization, and sharing features. It provides client applications for various platforms and offers additional features like file encryption and media streaming.

10. Synology Drive: Synology Drive is a cloud file sync and sharing solution provided by Synology, a company known for its network-attached storage (NAS) devices. It offers features like cross-platform file synchronization, file versioning, and granular access controls.

These are just a few examples of popular cloud storage software packages available in the market. Each software package has its own unique features, pricing models, and target audience. It’s important to consider factors such as security, scalability, integration options, and specific requirements when choosing a cloud storage solution for your needs.