Uniform Commercial Code (UCC): Primary law governing sales transactions, particularly Article 2 for sales of goods. Critical for establishing basic contract terms, warranties, and remedies.

Digital Millennium Copyright Act (DMCA): Federal law addressing copyright protection for software and digital content, including anti-circumvention provisions and ISP safe harbors.

Copyright Act of 1976: Fundamental federal law protecting original works of authorship, including software code and related documentation.

Computer Fraud and Abuse Act (CFAA): Federal law addressing unauthorized access to computer systems and data, relevant for security provisions in software agreements.

E-SIGN Act: Federal law establishing the legal validity of electronic signatures and records in commercial transactions.

State Privacy Laws: Various state-specific privacy regulations (e.g., CCPA in California, SHIELD Act in NY) governing data protection and privacy requirements.

Export Administration Regulations (EAR): Federal regulations controlling the export and transfer of commercial software and technology to foreign countries.

State Contract Laws: State-specific laws governing contract formation, enforcement, and remedies that may supplement or modify federal requirements.

Patent Laws: Federal laws protecting novel, non-obvious inventions, including software-related patents and their licensing.

Trade Secret Laws: Federal and state laws protecting confidential business information and proprietary software code.

Magnuson-Moss Warranty Act: Federal law governing consumer product warranties, including software sold to consumers.

State Consumer Protection Laws: State-specific laws protecting consumers from unfair or deceptive business practices in software sales.

Data Breach Notification Laws: State-specific requirements for notifying affected parties in the event of a data breach or security incident.

Sector-Specific Privacy Laws: Federal laws governing specific sectors (HIPAA for healthcare, GLBA for financial services, FERPA for education) with specific data protection requirements.

Federal Trade Commission Act: Federal law prohibiting unfair or deceptive trade practices, including false advertising and misleading software claims.