Best S3 Browser & Cloud Storage Manager — Stream Vessel Alternatives in 2026

About S3 Browser & Cloud Storage Manager — Stream Vessel

Stream Vessel is a fast, browser-based S3 browser and file manager that connects to AWS S3 and any other S3-compatible object storage — without installing a desktop app or leaving Chrome. Browse buckets, upload and download files with drag-and-drop, preview images and documents inline, search for your data, and organize your objects directly from your browser. Your access keys never leave your device: credentials are encrypted and stored locally, and Stream Vessel connects to your storage provider directly, with no middleman server in between. DIRECT AND PRIVATE ACCESS Stream Vessel communicates directly with your S3 storage. Your credentials are stored locally on your device and never pass through third-party servers. Complete privacy, total control. PERMISSION-MINIMAL BY DESIGN Unlike tools that demand broad access to every site you visit, Stream Vessel requests access only to the specific S3 host you connect to - and only at the moment you connect. Chrome's own permission prompt puts you in control: approve a connection's endpoint once, and revoke it whenever you like. AWS connections are scoped to Amazon's domains; other providers are scoped to the exact endpoint you enter. Your browsing stays private, and the extension can only reach the storage you point it at. UNIVERSAL S3 COMPATIBILITY Works seamlessly with Amazon S3 (AWS S3) and any other S3-compatible storage service. POWERFUL FEATURES Intuitive File Browser Tree-based interface for easy navigation with lazy loading for fast performance even with large buckets. Virtual scrolling handles thousands of files smoothly. Expand and collapse folders with automatic state persistence so you can pick up where you left off. Multi-select support for efficient batch operations. Seamless File Operations Upload single or multiple files with real-time progress tracking. Download files directly to your computer with streaming support for large files. Create folders and organize your storage structure. Copy and move files between folders and even between different buckets. Bulk delete operations with safety confirmations to prevent accidents. Support for large files with automatic multipart upload. Fast File Search Find any object without scrolling through thousands of keys. Search the current folder or the entire bucket, match on file name or full path, and use wildcards (* and ?) for precise queries. Matches stream in live with file-type icons, size, and last-modified date, and you can act on any result on the spot. Because listing very large buckets means more requests to your provider, Stream Vessel scans cost-consciously: it pauses on big keyspaces and asks before continuing, so a search never runs up surprise request charges - and you can choose "don't ask again" per connection. Secure File Sharing Generate short-lived presigned links to share files without making buckets public or exposing your credentials. Share a single file, or select many and copy all their links at once. Links expire automatically after the duration you choose, so access never outlives its purpose. Built-in Text and Code Editor Edit text and code files directly in your browser without downloading them first. Powered by Monaco Editor, the same editing engine used in Visual Studio Code. Syntax highlighting for over 50 programming languages. Make quick edits to configuration files, update website content, fix typos in documentation, or modify scripts - then save changes directly back to S3 with one click. Metadata Management View complete object metadata including size, content type, last modified date, and custom headers. Edit metadata fields to fix incorrect MIME types or update caching behavior. Manage custom metadata headers for advanced use cases. Add your own metadata tags for better organization and categorization. Update metadata without re-uploading files, saving time and bandwidth. Scoped Connections Lock a connection to a single bucket - or a specific folder/prefix - with an optional bucket path like s3://mybucket/team/projectA/. Scoped connections open straight into that location instead of listing every bucket, so they pair perfectly with least-privilege credentials that aren't allowed to list all buckets. Ideal for handing a teammate access to just one project folder. Connection Management Store unlimited S3 connections and switch between them instantly. A provider-first dialog gets you started fast with one-click setup templates for the most popular S3-compatible services, plus any other provider you use. An Advanced section keeps expert options - custom region, AWS Assume Role, and service-endpoint overrides (FIPS, dualstack, VPC interface endpoints) - tucked away until you need them. Built-in connection testing validates your credentials before saving. Import and export connections as JSON files for easy backup, sharing with team members, or transferring between computers. All credentials are stored locally on your device - never transmitted to third parties. PROFESSIONAL INTERFACE Clean, modern user interface with responsive design adapts to any screen size. Context menus provide quick access to all file operations. Smooth animations and transitions for a polished experience. SECURITY FIRST Your security and privacy come first. Stream Vessel runs entirely in your browser and talks directly to your S3 storage over HTTPS - there are no Stream Vessel servers in between, so your files and credentials never pass through third parties. Connection details are stored locally on your device, sandboxed to the extension, and never transmitted anywhere. You stay in control of access: use least-privilege IAM keys or scoped credentials, and Stream Vessel respects whatever bucket policies and permissions you've configured. The extension requests access