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Assertible vs OpenPanel

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Assertible compared with OpenPanel
DetailAssertibleOpenPanel
What it doesThe easiest way to test and monitor your web services An open-source alternative to Mixpanel
StageEstablished Growing
Founded2015 Not given
Based inNot given Not given
Pricing modelfreemium freemium
PricingFree plan with 2 web services, 10 tests per service, 1,000 result retention, 1-2 members. Paid plans from $25-$100/month offering 25-50 web services, higher test and result limits, and up to 20 team members. Free 30-day trial. Cloud plans from $2.50/month for 5K events to $900/month for 50M events, with unlimited websites, users, dashboards, and tracked profiles. Self-hosting available for free with unlimited events.
Key features
  • HTTP assertions for API testing
  • Automatic API specification synchronization
  • Post-deployment smoke testing
  • Scheduled continuous monitoring
  • Deployment tracking and testing
  • Multi-environment testing consistency
  • Swagger API specification import
  • Team collaboration and organizations
  • Integration with GitHub, Slack and other tools
  • Detailed HTTP request and assertion result overview
  • Event tracking
  • Funnels
  • Retention analysis
  • User profiles
  • Session replay
  • Revenue tracking
  • A/B testing
  • AI-native analytics with MCP
  • Notifications and alerts
  • Web analytics
What makes it different
  • Easy specification synchronization with API specs
  • Powerful and robust HTTP assertions for custom tests
  • Automatic cross-environment test consistency
  • Integrated deployment testing workflow
  • Team collaboration with result retention and monitoring insights
  • Open source with full code transparency on GitHub
  • Self-hostable with full data ownership
  • Combines product and web analytics in one platform
  • Simple transparent pricing with no hidden fees
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)56 no change since last check62 no change since last check
Trust Flow (Majestic)2530
Citation Flow (Majestic)3845
Referring domains (Majestic)528836

6 details filled in for both companies.

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