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Act! vs Milvus: 2026 Comparison

Act! Milvus
Overview A long-standing CRM and marketing automation platform trusted by small and midsize businesses for over 35 years. Open-source vector database designed for scalable similarity search with GPU acceleration and billion-scale vector support.
Pricing Subscription ($30-$50/user/month) Free (Free-$$$)
Key Features
  • Contact management
  • Opportunity tracking
  • Marketing automation
  • Custom dashboards
  • Mobile access
  • Integration
  • emarketing
  • Calendar management
  • Open-source
  • GPU acceleration
  • Billion-scale
  • Hybrid search
  • Partition
  • Multi-vector
  • Zilliz Cloud
Pros
  • Long track record
  • On-premise option
  • Good for small businesses
  • Established user base
  • Highly scalable
  • GPU support
  • Open-source
  • Billion-scale
Cons
  • Interface feels dated
  • Limited modern integrations
  • Marketing features are basic
  • Mobile app is limited
  • Complex setup
  • Resource hungry
  • Steep learning curve
  • Operational overhead