Head-to-head · Web Archiving Software
MirrorWeb Website Archiving vs Library of Congress Web Archive
MirrorWeb Website Archiving leads on 0 checks, Library of Congress Web Archive on 1, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreMirrorWeb Website Archiving · 8.7/10
- Free planonly Library of Congress Web Archive
- Most featuresLibrary of Congress Web Archive · 2 of 2
MirrorWeb Website Archiving scores higher on our rubric for web archiving software: 8.7 against 7.9 out of 10; our editors rank them #3 and #7.
Library of Congress Web Archive offers archive search; MirrorWeb Website Archiving doesn't.
MirrorWeb Website Archiving is the better fit for enterprises archiving dynamic websites. Library of Congress Web Archive is the better fit for readers accessing Library of Congress collections.
- MirrorWeb Website Archiving fits best
Enterprises archiving dynamic websites
- Library of Congress Web Archive fits best
Readers accessing Library of Congress collections
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Side by side
| Feature | MirrorWeb Website Archiving 8.7/10 Visit ↗ | Library of Congress Web Archive 7.9/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.7 | 7.9 |
| Ranking | #3 in Web Archiving Software | #7 in Web Archiving Software |
| Best for | Enterprises archiving dynamic websites | Readers accessing Library of Congress collections |
| Pricing model | Paid | Free |
| Starting price | Pricing on request | Free plan |
| Free plan | Not checked yet | ✓ (best) |
| Free trial | — | — |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Support | Email, Docs | |
| Built for | Small business, Mid-market, Enterprise | Enterprise |
| Features MirrorWeb Website Archiving 1/2 · Library of Congress Web Archive 2/2 | ||
| Snapshot capture | ✓ | ✓ |
| Archive search | — | ✓ (best) |
| Specs | ||
| Capture methods | Configured site capture; vendor documentation does not specify user-initiated capture methods | Selected and crawled by Library of Congress subject experts; not user-submitted capture |
| Preservation controls | WORM storage; WARC format; configurable storage location; URL exclusions and site settings | Access may be restricted to on-site use; permissions affect off-site display |
| Supported content | Dynamic content, interactive elements, single-page applications, geolocation and user-specific views | HTML, images, PDF documents, audio, and video files; capture of some content may be incomplete |
| Browser or API access | No browser extension or API documented on the opened official pages | loc.gov APIs; web archive browsing through loc.gov |
| Our review | ||
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| Cons |
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| Our verdict | MirrorWeb Website Archiving captures websites for preservation and compliance needs, with support for dynamic content, interactive elements, single-page applications, geolocation, and user-specific views. Governments, brands, and financial… Read the review → |
For researchers exploring preserved websites, the Library of Congress Web Archive offers curated collections organized around subjects and events, including government, elections, news, organizations, and culture. Visitors can browse… Read the review → |
Strengths and trade-offs
MirrorWeb Website Archiving — where it wins
- Captures single-page apps, interactive content, and user-specific views
- Preserves WARC records in a WORM environment with configurable storage
- Supports full-text search, replay, capture comparison, and archive exports
Where it doesn't
- Requires a contact-sales process rather than self-serve purchasing
- No browser extension or API is documented on the official pages
- Capture is configured by site; user-initiated capture methods are unspecified
Library of Congress Web Archive — where it wins
- Browse thematic and event-based collections selected by Library subject experts
- Search descriptive records, including by URL
- Access WARC and older ARC archives through loc.gov and its APIs
Where it doesn't
- Does not offer user-submitted website capture
- Some archived material is restricted to on-site use
- Crawlers may capture content or functionality incompletely
- MirrorWeb Website Archiving8.7/10 · Pricing on request
A cloud archiving service for preserving and reviewing dynamic, interactive websites.
Visit MirrorWebFull verdict → - Library of Congress Web Archive7.9/10 · Free plan
A free, searchable archive for research—not a tool for submitting your own captures.
Visit loc.govFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update