This browser extension downloads books from Internet Archive and HathiTrust Digital Library, with a notice naming its official source.
MycroftProject
Browse OpenSearch and Sherlock plugins that add site-specific search providers to Firefox, Internet Explorer, and Chrome.

About MycroftProject
The Mycroft Project hosts over 28 thousand OpenSearch and Sherlock search plugins that let you query a site directly from the browser search bar. OpenSearch works with Firefox, IE and Chrome. Sherlock works with Firefox and other Mozilla-based browsers.
Pricing is not clearly stated.
Key features
- Advanced Search to browse categories and filter by country or language
- Lists of plugins for popular domains and most downloaded plugins
MycroftProject at a glance
- Website
- mycroftproject.com
- Category
- Software & Utilities › Firefox Extensions
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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