Checksum

Checksum is an AI-powered web and API testing platform for software engineering teams that automatically generates, runs, and maintains end-to-end tests for web applications using real user sessions from production or staging.

Key capabilities include:

• Automatic E2E test generation from actual user interactions and application analysis, designed to cover real flows, edge cases, and data patterns.
• Auto-healing test maintenance that detects changes (selectors, UI flows, regressions), fixes failing tests, and can open pull requests for review, with about 70% of failures resolving autonomously.
• Production-like simulation that exercises code against real APIs, real data, and real edge cases to reduce gaps between test environments and production.
• Tooling integrations via a lightweight JavaScript SDK, compatibility with Playwright and Cypress, CI/CD support for GitHub, GitLab, and Jenkins, plus a REST API for programmatic generation and results retrieval.

Pricing: Usage based (pricing is based on the number of workflows (tests) the AI maintains, includes unlimited users and test runs), and offers a free 30-day trial.

What makes it notable is the focus on continuous, always-on test generation and maintenance based on real user sessions, delivering tests as runnable code in the repository and reducing the ongoing engineer time typically spent fixing flaky or outdated end-to-end tests.