StackCostMatrix - Showcase Project
Listed November 4, 2026
About StackCostMatrix
True cost calculators for 55 B2B software integrations
StackCostMatrix is a free, open index of what B2B integrations actually cost. For each of 55 integrations (HubSpot, Salesforce, Slack, Stripe, Pipedrive, Monday, QuickBooks and more) it shows the minimum plan tiers required, API and webhook gates, middleware costs, and a total-cost-of-ownership calculator for 10-seat teams. All pricing is verified against official vendor documentation, and the underlying dataset is open on GitHub.
Project details
Website: https://stackcostmatrix.com