CS Browser, developed by Netsdk Software FZE, is a Windows application for managing Amazon S3, Amazon S3 Glacier, and compatible cloud storage services. Formerly known as S3 Browser, it provides a familiar graphical interface for working with cloud buckets and files without relying on command-line tools. Users can upload, download, organize, copy, and move objects; create and manage buckets; configure access permissions; and share buckets with other users. The software also supports Amazon CloudFront distributions, lifecycle rules, bucket policies, static website hosting, logging, and storage-class management.

CS Browser includes tools for folder synchronization, version management, bulk permission updates, and command-line task automation. Security and transfer features include client-side AES-256 encryption and compression, integrity checking, multipart transfers with pause and resume, bandwidth controls, and support for large files. The application can manage multiple accounts and supports Windows Explorer drag-and-drop. A freeware edition is available for Windows 7 SP1 and later, as well as supported Windows Server versions. CS Browser is not affiliated with or endorsed by Amazon or AWS.