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Accelo vs Windmill: 2026 Comparison

Accelo Windmill
Overview A professional services automation platform that combines CRM, project management, and billing for service businesses. An open-source developer platform for building internal tools, workflows, and scripts with a focus on developer experience.
Pricing Subscription ($24-$49/user/month) Freemium (Free-$40/user/month)
Key Features
  • CRM
  • Project management
  • Time tracking
  • Billing
  • Retainers
  • Ticketing
  • Email integration
  • Client portal
  • Script editor
  • Workflow builder
  • App builder
  • Scheduling
  • Webhooks
  • Self-hosted
  • Multi-language
  • Version control
Pros
  • Built for services firms
  • Automatic time tracking
  • Retainer management
  • Unified platform
  • Open source
  • Developer-first
  • Self-hosted option
  • Multi-language support
Cons
  • Complex to set up
  • Interface can be busy
  • Expensive at scale
  • Learning curve
  • Newer platform
  • Smaller community
  • Documentation growing
  • Limited UI components