Maxio is the unified financial operations platform created from the merger of Chargify and SaaSOptics. It combines subscription billing, revenue recognition, and SaaS financial metrics to provide a single source of truth for all billing and finops needs for high-growth SaaS and AI companies.

Maxio delivers all-in-one revenue management and subscription billing solutions for SaaS companies managing complex business models. The platform covers subscription management, recurring billing, GAAP/IFRS-compliant revenue recognition, SaaS metrics reporting, usage-based billing, and AR management. Maxio serves 2,300+ customers worldwide and manages over $10 billion in annual revenue. Features include flexible product catalogs, usage metering and rating, automated dunning, payment integrations with 20+ gateways, and custom dashboards.
Billing and Financial Reporting for B2B SaaS & AI Companies
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Open-source billing platform for the intelligence era
Founded
Polar.sh is an open-source billing platform for developers launched in 2023. It positions itself as a Merchant of Record that handles payment processing, tax compliance, and digital product delivery for SaaS and developer tools.
Membership and subscription platform
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Memberful is a membership and subscription platform that manages subscriptions within its own platform and passes payments through to Stripe. Members can manage their subscriptions, and the platform handles payment retries and subscription deactivation.
Monetization Control Layer for AI Products
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Stigg provides a unified monetization platform designed specifically for engineers that helps companies manage and optimize their monetization strategies. It serves as a control layer connecting billing, pricing, CRM, and product experiences through a single entitlement management API.