Firefox Extensions to Dead Link checking

elCurator is a collaborative content curation and bookmarking tool designed for teams and individuals. It allows users to easily save, organize, read, and share web content, fostering efficient information management and knowledge sharing within a centralized platform.

SemanticScuttle is an open-source, self-hosted social bookmarking system that emphasizes structured tagging and collaborative knowledge management. It allows users to save, organize, and share bookmarks with a strong focus on semantic relationships between tags.

Raindrop.io is a versatile bookmark manager that helps you organize, save, and rediscover web content across all your devices. It provides a visually appealing interface and powerful search capabilities to keep your digital life organized.

Pearltrees is a visual and collaborative web clipping and organization tool that allows users to collect, organize, and share virtually anything found online. It's designed to help users curate digital content in a visually intuitive way, facilitating knowledge management and collaboration.

Diigo is a comprehensive online tool designed for researchers, students, and lifelong learners to collect, organize, annotate, and share information found on the web. It acts as a powerful bookmarking service combined with robust annotation capabilities for web pages, PDFs, and documents.

Papaly is a robust online bookmark manager and startpage, designed to help users organize, discover, and share web links visually. It offers collaborative boards, real-time synchronization, and integration with various productivity tools to enhance workflow and information management.