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Essays and roundups

Testing tools, tech, and what is changing. Hands-on guides are inGuides. Checklists live in thetech directory.

  1. 15 October 2026 · 11 min · CheckOps

    Test Impact Analysis: How Agentic Coding Breaks CI

    Anthropic's CI jobs grew 25x in six months as agents wrote more code. How it rebuilt test impact analysis, what Spotify learned and how to scale test selection.

  2. 15 September 2026 · 11 min · CheckOps

    Google Artemis Review: AI Agent for Android Testing

    Google open-sourced Artemis, an MCP-native AI agent that tests Android apps on real devices. Features, Flash vs Pro modes, benchmark claims and the dispute.

  3. 15 August 2026 · 11 min · CheckOps

    EU AI Act August 2026: What QA Teams Need to Test

    The EU AI Act's Article 50 transparency rules apply from 2 August 2026. What QA teams should test for chatbots, agents and AI content, plus the new deadlines.

  4. 1 August 2026 · 11 min · CheckOps

    Best AI Testing Tools on Product Hunt 2026: A Review

    A review of 2026's top AI testing launches on Product Hunt, from TestSprite 3.0 to Kane CLI and Checksum, with launch stats, maker claims and how to judge them.

  5. 28 July 2026 · 11 min · CheckOps

    Best Security Testing Tools 2026: Supply Chain to Agents

    The best security testing tools of 2026: SAST, SCA, DAST and supply-chain defences after the trivy-action compromise, plus testing AI agents with OWASP.

  6. 21 July 2026 · 11 min · CheckOps

    Best Performance Testing Tools 2026: k6 2.0 and Beyond

    The best performance testing tools of 2026: k6 2.0's AI workflows and assertions, Gatling, JMeter, Locust, Artillery, Lighthouse 13 and agentic perf testing.

  7. 15 July 2026 · 11 min · CheckOps

    Agentic vs Deterministic E2E Tests: Lessons from Slack

    Slack ran 200+ agentic E2E workflows with Playwright MCP, Playwright CLI and generated tests. What its failure rates, costs and token data mean for testers.

  8. 14 July 2026 · 11 min · CheckOps

    Best AI Testing Tools 2026: Agentic Testing Platforms

    The best AI testing tools of 2026: agentic testing in Playwright, Cypress, Postman and k6, AI platforms, and LLM testing after the Promptfoo and Langfuse deals.

  9. 7 July 2026 · 11 min · CheckOps

    Best Web Testing Tools 2026: Playwright, Cypress, Vibium

    The best web testing tools of 2026: Playwright 1.57–1.61 agent features, Cypress cy.prompt beta, Selenium, Vibium, Vitest, visual testing, grids and AI agents.

  10. 1 July 2026 · 11 min · CheckOps

    Best API Testing Tools 2026: Git-Native, AI and MCP

    The best API testing tools of 2026: Postman's AI-native platform, Bruno 3, Karate, REST Assured, Pact, k6 2.0, mocking and how to test MCP servers as APIs.

  11. 1 June 2026 · 11 min · CheckOps

    Flaky Tests: Causes, Fixes and Playwright Retries

    Flaky tests explained: common causes, how to find and fix them, quarantine strategies, and how to use Playwright retries, isolated retries and test locks well.

  12. 15 April 2026 · 11 min · CheckOps

    Mutation Testing for AI-Written Tests: Radar Vol 34

    Why Thoughtworks Radar Vol 34 put mutation testing in Trial, and how to catch always-green AI-written tests with Stryker, Pitest and cargo-mutants.

  13. 15 March 2026 · 11 min · CheckOps

    Meta JiTTests: Just-in-Time Tests for Agentic Code

    Meta's Just-in-Time tests explained: how LLM-generated, mutation-guided tests catch regressions before code lands, the results, and what QA teams can borrow.

  14. 1 March 2026 · 11 min · CheckOps

    Promptfoo vs DeepEval vs Langfuse: Which LLM Eval Tool?

    Promptfoo vs DeepEval vs Langfuse compared for 2026: what each does, licences, metrics, red teaming, tracing, CI fit, ownership changes and when to use each.

  15. 15 February 2026 · 11 min · CheckOps

    Playwright CLI vs Playwright MCP: Which for AI Agents?

    Playwright CLI vs Playwright MCP compared for coding agents: token use, skills, sessions, snapshots, commands and when each is the right way to drive a browser.

  16. 15 January 2026 · 11 min · CheckOps

    Vibium Review: AI-Native Browser Automation in 2026

    A Vibium review: Jason Huggins' WebDriver BiDi browser automation for AI agents, its MCP server, JS and Python clients, and where it fits next to Playwright.

  17. 1 January 2026 · 12 min · CheckOps

    Playwright vs Cypress 2026: Which Should You Choose?

    Playwright vs Cypress in 2026: architecture, browsers, speed, AI and MCP support, Cypress 16 changes, Playwright 1.58 to 1.64 features and how to choose.

  18. 1 December 2025 · 12 min · CheckOps

    Best AI Testing Tools 2025: Agentic Testing Guide

    The best AI testing tools of 2025: agentic testing platforms, Playwright Test Agents, MCP, browser agents, LLM testing and eval tools, with trade-offs.

  19. 15 November 2025 · 12 min · CheckOps

    AWS Outage Lessons: Resilience Testing and Chaos Engineering

    The October 2025 AWS and Azure outages, OWASP Top 10:2025's new exceptional-conditions risk and cy.prompt: a practical guide to resilience testing for QA.

  20. 1 November 2025 · 11 min · CheckOps

    Best Web Testing Tools 2025: Playwright vs Cypress & More

    Our 2025 guide to web testing tools: Playwright vs Cypress, Selenium, WebdriverIO, Vitest browser mode, visual testing, cloud grids and AI testing agents.

  21. 15 October 2025 · 11 min · CheckOps

    Playwright Test Agents: The Truth About Self-Healing Tests

    Playwright 1.56 ships planner, generator and healer agents. How they work, where self-healing tests help, where they hide bugs, and the policy to use.

  22. 1 October 2025 · 11 min · CheckOps

    Best Security Testing Tools 2025: SAST, DAST, SCA & More

    Our 2025 guide to security testing tools for engineering and QA teams: Semgrep, Snyk, SonarQube, ZAP, Burp Suite, Trivy, Nuclei and supply-chain defences.

  23. 15 September 2025 · 11 min · CheckOps

    npm Supply Chain Attacks: Security Testing for QA Teams

    The Nx s1ngularity and chalk/debug npm compromises hit the tooling test teams run every day. Here is a practical supply-chain security testing playbook for QA.

  24. 1 September 2025 · 11 min · CheckOps

    Best Performance Testing Tools 2025: k6, Gatling, JMeter

    Our 2025 guide to performance testing tools: k6, Gatling, JMeter, Locust, Artillery, Vegeta, cloud and front-end tools, with scripts and a selection guide.

  25. 15 August 2025 · 11 min · CheckOps

    LLM Testing and Evals: Quality in the Vibe-Coding Era

    Replit's deleted database, the Tea breach, GPT-5 and the 2025 Stack Overflow trust gap: why LLM testing and eval pipelines are now core QA automation work.

  26. 1 August 2025 · 12 min · CheckOps

    Best API Testing Tools 2025: Postman, Bruno, Karate & More

    Our 2025 guide to API testing tools: Postman, Bruno, Insomnia, Karate, REST Assured, Pact, Keploy and more, with code, comparisons and a selection guide.

  27. 15 July 2025 · 11 min · CheckOps

    Agentic QA Goes Mainstream: AI Testing Agents in 2025

    Copilot's coding agent, Claude Code GA, BrowserStack and mabl agents, Postman Agent Mode and Stagehand: agentic QA in mid-2025 and how to adopt it.

  28. 15 May 2025 · 11 min · CheckOps

    k6 1.0 and the State of Performance Testing in 2025

    Grafana k6 1.0 brings TypeScript, SemVer and stable browser testing. How it compares with Gatling, JMeter and Locust, and how to run performance tests in CI.

  29. 15 April 2025 · 11 min · CheckOps

    Playwright MCP and MCP Servers for Agentic Testing

    Playwright MCP, Browser Use's $17M seed and MCP tool poisoning: how MCP servers turn AI assistants into testing agents, and how to use them safely.

  30. 15 March 2025 · 11 min · CheckOps

    AI Coding Agents Writing Tests: Claude Code and Copilot

    Claude Code, Copilot agent mode and Cursor now write and run tests. Patterns, failure modes and guardrails for LLM test automation in early 2025.

  31. 15 February 2025 · 11 min · CheckOps

    Browser Agents vs Test Automation: Operator and BDD

    OpenAI Operator, vibe coding, SpecFlow's end and Cucumber's new home: where browser agents fit next to deterministic test automation and BDD in 2025.

  32. 15 January 2025 · 11 min · CheckOps

    MCP and the OWASP LLM Top 10: LLM Testing Starts Here

    MCP's launch, the OWASP Top 10 for LLM Applications 2025 and Playwright aria snapshots: how to build an LLM testing practice for 2025, with promptfoo.

  33. 15 November 2024 · 11 min · CheckOps

    AI Testing Agents Arrive: Computer Use and DORA 2024

    Claude computer use, DORA 2024's AI stability warning and the World Quality Report: a practical map of AI testing tools and agentic testing in late 2024.

  34. 15 October 2024 · 12 min · CheckOps

    Shift-Left Meets Shift-Right: Sonos and Observability

    Sonos's app failure, ZAP joining Checkmarx and Playwright 1.48: why shift-left and shift-right testing, OpenTelemetry and contract tests belong together.

  35. 15 September 2024 · 12 min · CheckOps

    Playwright vs Cypress vs Selenium: The BiDi Shift

    Playwright vs Cypress vs Selenium in late 2024: WebDriver BiDi, download trends, architecture trade-offs and how to pick a web test automation framework.

  36. 15 August 2024 · 12 min · CheckOps

    CrowdStrike Outage Lessons for Release Quality Testing

    What Channel File 291 teaches QA teams about testing config and content updates, staged rollouts, test impact analysis and release quality in 2024.

  37. 25 May 2024 · 14 min · CheckOps

    Top Free API Testing Tools in 2024

    Top free automated api testing tools in 2024 to help you find the perfect fit for your API testing needs