Alternatives to Percy

2 editor-selected alternatives · Percy overview →

source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order

A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.

Lost Pixel

open sourcefreemiumexplicit relation

Lost Pixel is an open-source visual regression testing tool that serves as an alternative to Percy and Chromatic. It captures and compares screenshots of UI components and application pages across Storybook, Ladle, Histoire, and custom screenshot sources like Cypress or Playwright. Integrated directly into GitHub Actions pipelines, it detects unintended visual changes before they reach production, with a free SaaS tier available for open-source projects.

Lost Pixel is a free and open-source visual regression testing engine released under the MIT license. Following the core team joining Figma, the open-source CLI and test runner remain freely accessible for Storybook, Playwright, and Ladle screenshot comparison workflows.

Anchor Browser

freemiumexplicit relation

Anchor Browser provides secure cloud-managed browser infrastructure for computer-use agents. Deploy humanized Chromium instances that access any website while maintaining bot-detection evasion and authentication support. Features OmniConnect for authentication lifecycle management, Web Action Cache for deterministic workflows, and built-in VPN infrastructure. Includes free tier and paid plans supporting millions of concurrent browser sessions for scalable agent automation.

Anchor Browser provides a free tier with 5 concurrent browsers, a Starter plan at $50 per month for 25 concurrent browsers, a Team plan at $500 per month for 50 concurrent browsers, and a Growth plan at $2,000 per month for 200 concurrent browsers.

Open-source Percy alternatives

Lost Pixel — see all open-source developer tools.

Free Percy alternatives

Lost Pixel, Anchor Browser offer a free plan or free tier.

More Testing & QA tools

same category, not editor-selected alternatives — see how Percy compares →

MCP InspectorMCP Inspector is the official interactive developer tool from the Model Context Protocol team for testing, debugging, and validating MCP servers. It provides a visual interface to inspect available tools, test transport configurations, export configs for different clients, and verify protocol compliance during MCP server development.PlaywrightCross-browser E2E testing framework by Microsoft supporting Chromium, Firefox, and WebKit with one API. Features auto-waiting, tracing with timeline/screenshots/DOM snapshots, codegen for recording tests, and parallel execution. Component testing for React, Vue, Svelte. Built-in API testing, network mocking, and mobile emulation. Known for reliability and speed vs Selenium/Cypress. 70K+ GitHub stars, rapidly becoming the E2E standard.DeepEvalDeepEval is an Apache-2.0 Python framework for evaluating LLM apps, RAG systems, agents, MCP workflows, and safety behavior with repeatable test cases. It works locally and in CI/CD, then connects to Confident AI for hosted reports, observability, red teaming, and governance when teams need shared evidence instead of ad-hoc prompt reviews and manual QA.reviewdogreviewdog is an open-source automated code review tool that integrates any linter or static analysis tool with GitHub, GitLab, Bitbucket, and Gitea pull requests. Parses output in errorformat, Checkstyle XML, SARIF, and JSON formats to post inline review comments on changed lines only. Works with GitHub Actions, Travis CI, CircleCI, GitLab CI, and Jenkins. Supports 40+ languages through universal linter adapter architecture.LangfuseLangfuse is an open-source LLM engineering platform with 29K+ GitHub stars for tracing, evaluating, and monitoring AI applications. Acquired by ClickHouse, it provides detailed traces of LLM calls, prompt management with versioning, dataset-based evaluation, user feedback collection, and cost tracking. Framework-agnostic with native integrations for LangChain, LlamaIndex, OpenAI SDK, and Vercel AI SDK. Offers both self-hosted deployment and a managed cloud service.StablyStably enables developers to create QA tests in plain English using a no-code editor, with AI ensuring tests remain valid as the application evolves through self-healing locators and assertions. It lowers the barrier to high-quality QA for startups by eliminating the need for scripting knowledge, automatically adapting test steps when UI elements change position or structure.CUA (Computer-Use Agent)Open-source computer-use infrastructure for agents that need to drive desktop environments in the background. CUA includes Cua Driver, Sandbox, Run, Bench, and Verified Data across Linux, Windows, macOS, and Android, with MCP and CLI surfaces for screenshots, accessibility trees, keyboard/mouse actions, shell commands, task evaluation, and fleet execution.ChromaticChromatic is a Storybook-first visual testing and UI review platform for design systems and frontend teams. It publishes Storybook, captures component snapshots, reviews pull-request diffs, and supports interaction tests, accessibility checks, TurboSnap, SteadySnap, Playwright/Cypress workflows, and Storybook MCP context.MomenticMomentic is an AI-native testing platform that lets teams write end-to-end tests in plain English. It features auto-healing test selectors that adapt to UI changes, instant mobile device emulators, built-in visual regression testing, and AI-powered flaky test handling. Backed by $15M Series A from Standard Capital, it eliminates brittle test maintenance through intelligent element identification and self-repairing test flows.

FAQ

Which Percy alternative is listed first?

Lost Pixel is first in the editor-selected list of 2 Percy alternatives. The stored order is editorial; review scores do not determine membership or position.

Are there open-source Percy alternatives?

Yes — Lost Pixel are open source.

Are there free Percy alternatives?

Yes — Lost Pixel, Anchor Browser offer a free plan or free tier.