Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Avodocs - Free legal documents for startups in minutes
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
LawGeex - Understand contracts before you sign them!
EndNote - Accelerate Your Research. Save time, stay organized, collaborate with colleagues and get published with EndNote 20.
Signaturely - Super simple eSignature software