Perma cc

perma.cc is a web-archiving service, originally developed by the Harvard Library Innovation Lab in 2013, designed to create permanent, immutable links (“Perma Links”) of web pages cited in legal, academic and policy publications. The key value is to protect against “link rot” and content drift—where cited web pages change or disappear over time, undermining the reliability of citations. 

In terms of current status:

• Perma.cc remains actively used by numerous libraries, courts, journals and educational institutions, indicated by library guides and institutional pages from 2024-25. 
• Its model is still centered on user-initiated archiving (you submit a URL, Perma.cc captures and stores it) rather than full web crawling. 
• Membership-based for institutions (universities, law libraries, courts) with individual accounts also available. Institutions often provide unlimited or high-quota archiving for affiliated users. 
• The service is recognized in citation practice guidelines (for example by law libraries), underscoring its role as a stable archival link tool.