Stellar Viewer for OST
File recovery software
Backup software
File converter software
Data recovery software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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Free version
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What is Stellar Viewer for OST
Stellar Viewer for OST is a Windows utility for opening and extracting data from Microsoft Outlook OST (Offline Storage Table) files when Outlook or the original mailbox is unavailable. It lets IT staff and end users browse mailbox content and export items such as emails, contacts, calendars, and attachments into other formats for recovery or migration workflows. The product focuses on OST viewing and conversion rather than full-system backup or continuous data protection. It is typically used in helpdesk scenarios, mailbox troubleshooting, and point-in-time extraction from orphaned or inaccessible OST files.
Purpose-built for OST access
The tool is designed specifically to read Outlook OST files and present mailbox folders and items for review. This fits common support cases where users have an OST but cannot access the corresponding Exchange/Microsoft 365 mailbox. It provides a focused workflow compared with broader backup platforms that require infrastructure setup.
Item-level export options
It supports exporting mailbox data into alternative formats for reuse, archiving, or migration. Item-level extraction can reduce the need to restore an entire mailbox when only specific messages or folders are required. This is useful for eDiscovery-like retrieval or user self-service recovery from a single file.
Standalone desktop operation
The product runs as a local Windows application and can be used without deploying server components. This can speed up one-off recovery tasks in small environments or on technician workstations. It also allows working with OST files obtained from endpoints or disk images without integrating with a backup repository.
Not a backup platform
Despite being used in recovery scenarios, it does not replace backup software for endpoints, servers, or cloud workloads. It does not provide scheduling, retention policies, immutable storage, or centralized administration typical of backup and data management suites. Organizations still need separate backup controls for ongoing protection.
Narrow file-type scope
The product is centered on Outlook OST files and related mailbox content. It is not a general-purpose file recovery tool for multiple file systems, applications, or databases. If the primary requirement is broad data recovery across workloads, this tool may be insufficient.
Windows and Outlook-centric use
Use cases are tied to Microsoft Outlook data structures and Windows technician workflows. It is less applicable for organizations standardizing on cross-platform recovery tooling or cloud-native mailbox restoration. Large-scale mailbox recovery and governance typically require centralized services rather than per-file desktop processing.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free | $0 (free download) | Scans and previews OST files; view emails, contacts, calendars, notes, tasks, journals; save individual emails in EML, MSG, RTF, HTML, or PDF; No technical support provided for free tools; to save/convert entire OST to PST requires purchasing Stellar Converter for OST (separate product). |
Seller details
Stellar Information Technology Pvt. Ltd.
Gurugram, Haryana, India
1993
Private
https://www.stellarinfo.com/
https://x.com/StellarInfo
https://www.linkedin.com/company/stellar-information-technology-pvt-ltd-/
