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Toptal is a network of freelance software developers, designers, and finance experts, which it describes as the top 3% of applicants. It provides on-demand senior talent for frontend modernization projects.

Codurance is a software consultancy focused on software craftsmanship, TDD, and clean architecture. They specialize in modernizing legacy systems with a focus on quality and maintainability.

Accenture is a global professional services firm with a mainframe modernization practice. It combines strategic consulting with large-scale delivery and partnerships with the major cloud providers. Its "myNav" platform is used to chart migration paths.