eResource Scheduler vs. Retain Cloud

eResource Scheduler (eRS) is enterprise resource management and scheduling software built for project-driven professional services firms, engineering and AEC consultancies, architecture firms, management consultancies, and accounting and audit firms of 100 to 5,000 people. Trusted by 850+ global enterprises across 29+ countries, it gives real-time visibility into resource capacity, availability, schedules, actuals, and financials, replacing spreadsheets with one connected system. Scheduling stays fast with drag-and-drop assignments, resource requests, and semi-auto scheduling.

The Only Platform Built to Unify Resource Planning for Professional Services — Now with AI and Enhanced Skills Taxonomy Established in 1992, Retain is the world’s first platform built to give professional services firms and complex, multi-entity organisations one place to plan, schedule, and forecast across every department. No more spreadsheets. No more disconnected tools. Just a single, intuitive system that brings clarity and control to resourcing. With AI-powered insights, a governed skills taxonomy, and behavioural profiling, Retain goes beyond availability.