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Apollo.io vs OpenProject: 2026 Comparison

Apollo.io OpenProject
Overview Apollo.io is an all-in-one sales intelligence and engagement platform with a database of over 275 million contacts. It combines prospecting, enrichment, and outreach automation in a single workflow. Open-source project management software with Gantt charts, agile boards, time tracking, and cost reporting.
Pricing Freemium ($0-99/mo) Freemium ($0-15.90/mo)
Key Features
  • Contact database
  • email sequencing
  • dialer
  • LinkedIn integration
  • buying intent signals
  • data enrichment
  • CRM sync
  • lead scoring
  • Gantt charts
  • Agile boards
  • Time tracking
  • Cost reporting
  • Wiki
  • Meetings
  • BCF
  • Self-hosted
Pros
  • Massive contact database
  • Generous free tier
  • All-in-one platform
  • Good data accuracy
  • Open-source
  • Self-hosted
  • Feature-rich
  • GDPR compliant
Cons
  • Data can be outdated for smaller companies
  • UI can feel cluttered
  • Email deliverability issues at scale
  • Complex setup
  • Dated UI
  • Learning curve

Apollo.io

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OpenProject

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