Best Free Testing Tools

Test your Android & iOS apps on this Cloud Based Android Phone / Tablets emulator and iPhone/iPad simulators directly in your browser. The free tier includes two concurrent session with 30 minutes of usage per month. No limit on app size. When we last read the page we cite for this offer, on 2026-11-03, we found the free tier still standing and no term that had moved, so we cannot confirm these terms today.

• Free sessions end after 3 minutes; paid plans have no session limit. (From appetize.io/pricing, read 2026-10-07.)

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-03, found the free tier still standing and no term that had moved. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

It's like CodePen but for cross-browser testing. UI-licious lets you write tests like user stories and offers a free platform - UI-licious Snippets - that allows you to run unlimited tests on Chrome with no sign-up required for up to 3 minutes per test run. Found a bug? You can copy the unique URL to your test to show your devs exactly how to reproduce the bug. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-11-12, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-12, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Load behvariour and page speed analysis and optimization tool. The free plan provides 10 tests per day, 5 experiments per week, and 15 GB of maximum ingested data per month. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open-source Python library that mocks AWS services for testing. Covers 100+ AWS APIs including S3, DynamoDB, Lambda, SQS, SNS, IAM, EC2. Apache-2.0 license. No cloud component, no auth required. Drop-in replacement for boto3 calls in tests. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open-source libraries for spinning up throwaway Docker containers in integration tests. Supports 50+ modules (databases, message brokers, AWS via LocalStack module). MIT license. Java, Go, .NET, Node.js, Python, Rust. Testcontainers Cloud bundled with Docker subscriptions (100 min/month on Docker Pro)

• −1 stale_verification We cannot confirm this offer: 8 consecutive re-check attempts have failed (most recently 2026-11-13 — The page describes Testcontainers as an open source library and lists supported languages, but it does not mention Testcontainers Cloud, Docker subscription bundling, or the 100 min/month Docker Pro allowance, so the stored deal details cannot be verified.), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open Source visual testing for developers. Unlimitedprojects, with 5,000 screenshots per month. Free for open-source projects. When we read the page we cite for this offer on 2026-09-30, we could read no amount, tier or rate on the page, and we have read it again since, on 2026-11-13, without confirming the terms above, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 2 consecutive re-check attempts have failed (most recently 2026-11-13 — The pricing page text does not state any free-tier limits (e.g., 5,000 screenshots per month, unlimited projects, or free for open-source projects), so the stored deal info cannot be verified against it.), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Keploy is a functional testing toolkit for developers. Recording API calls generates E2E tests for APIs (KTests) and mocks or stubs(KMocks). It is free for Open Source projects. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Qase is a test management system for Dev and QA teams. The Free plan is $0 per user/month, free forever. It is for "students, hobbyists, educators, and non-profits to learn the basics of a TMS." Free limits include up to 2 projects, 500 MB storage, 30-day test history, 5,000 API results a month, 4 full seats, 2 active test runs. Free does not include custom fields, test case review, integrations, webhooks, requirements traceability, dashboards, SSO or audit logs. Teams is $35 per user/month billed annually, from 5 seats.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-03, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Various free network and server tools. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Provides a testing platform that can help teams of all sizes at different levels of testing maturity, including Katalon Studio, TestOps (+ Visual Testing free), TestCloud, and Katalon Recorder. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Capture and inspect webhooks from your browser. Forward to localhost, or replay from history. Free to use. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open source (MIT) Python-based load testing framework with distributed execution. Locust Cloud free tier: 200 VU-hours/month, max 100 concurrent virtual users. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-14, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-14, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

A Dashboard for publishing automated test results and a Framework for implementing manual tests as code using GitHub. The service is [free for Open Source](https://github.com/marketplace/testspace-com) and accounts for 450 monthly results. When we last read the page we cite for this offer, on 2026-11-04, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-04, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Official AWS Serverless Application Model CLI for local Lambda and API Gateway testing. Runs Lambda functions locally via Docker, emulates API Gateway, generates events. Open source (Apache-2.0). No AWS account required for local testing. Supports Python, Node.js, Go, Java, .NET, Rust runtimes. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-10, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-10, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Open source browser automation and testing framework. Self-hosted grid for parallel test execution across browsers. No usage limits. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-14, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-14, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Automatically create API and load tests by analyzing network traffic. Simulate up to 50 concurrent users for up to 60 minutes for free monthly.

• −1 stale_verification We cannot confirm this offer: 4 consecutive re-check attempts have failed (most recently 2026-11-08 — The pricing page text is truncated and contains no pricing tiers, free plan details, or concurrency/load-testing limits, so the stored free-tier info cannot be verified.), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Free on-page SEO website tester. 10 free website crawls per day. Useful SEO learning resources and recommendations on how to improve the on-page SEO results for any website regardless of technology. We could not read the page we cite for this offer when we last looked, on 2026-11-13, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 9 consecutive re-check attempts have failed (most recently 2026-11-13 — fetch failed), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Visual regression testing — 5,000 screenshots/month, unlimited users and projects, 30-day build history. Note: BrowserStack browser testing is trial-only; only Percy visual testing has a permanent free tier. We could not read the page we cite for this offer when we last looked, on 2026-11-08, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 8 consecutive re-check attempts have failed (most recently 2026-11-08 — page content too short (likely JS-rendered SPA); the rendering client failed: the rendering client did not finish in time), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

Desktop tool that records and replays the steps made in a web browser and creates scripts. The EveryStep Web Recorder is free; paid monitoring plans start at $38.99/month, with a 30-day free trial. We could not read the page we cite for this offer when we last looked, on 2026-11-13, so we cannot confirm these terms today.

• −1 stale_verification We cannot confirm this offer: 9 consecutive re-check attempts have failed (most recently 2026-11-13 — fetch failed), never confirmed since it was indexed. This is our inability to verify, not a change by the vendor. (a limit of ours, not a change by the vendor)

A free tool for developers and API testers to check if an API is CORS-enabled for a given domain and identify gaps. Get actionable insights. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Free Starter plan: 50 max virtual users, 10 tests/month, 20-minute max test duration, 1-week data retention, 1,000 API monitoring requests/month. When we last read the page we cite for this offer, on 2026-10-25, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-25, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Check SSR (server-side rendering) for any URL by visually comparing the server rendered version of the page with the regular version. The page we cite for this offer states no amount, tier or rate we can read when we last looked, on 2026-10-11, so we cannot confirm these terms today.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-10-11, could read no amount, tier or rate on the page. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

Selenium Grid testing on AWS. The Free plan is $0 a month with 5 grid starts every 30 days, each running up to 2 hours, and 2 parallel selenium nodes.

• −1 stale_verification Our last read of the vendor's pricing page, on 2026-11-04, found the page different from the terms we hold. This is our confidence in the record, not a change by the vendor. (a limit of ours, not a change by the vendor)

holistic visual regression testing for your Storybook, Ladle, Histoire stories and Web Apps — Lost Pixel is sunsetting the product and building what's next. A 'Hobby Free' tier is available with 7,000 shots per month. Paid tiers include Startup ($100/mo, 40,000 shots), Business ($250/mo, 100,000 shots), and Scale ($670/mo, 300,000 shots). We could not read the page we cite for this offer when we last looked, on 2026-10-28, so we cannot confirm these terms today.

• −3 free_tier_withdrawn Recorded product deprecation on 2026-08-28: Lost Pixel is being sunset as they are joining Figma. While a free tier still exists, it's now listed as 'Hobby Free' and offers 7,000 snapshots/month. There are also paid tiers: Startup ($100/mo), Business ($250/mo), and Scale ($670/mo). Unconfirmed. We could not check this change against an archived copy of lost-pixel.com's page, so it does not count toward the rating. Source: https://lost-pixel.com

AI-powered visual testing for Playwright, Cypress, Selenium and Storybook — no permanent free tier. Free trial; the Starter plan is $667/month paid annually, with unlimited users and 100,000 component checkpoints or 1,000 page checkpoints. Note — effective between 2025-08-12 and 2026-01-31: The free Eyes plan no longer exists: the Internet Archive's copy of the pricing page from 2025-08-12 lists it, and its copy of 2026-01-31 does not. The lowest tier is 'Starter' at $667/month, offering 100,000 component checkpoints or 1,000 page checkpoints. Source ↗

• −3 free_tier_withdrawn Recorded free tier removal on 2026-01-31: The free Eyes plan no longer exists: the Internet Archive's copy of the pricing page from 2025-08-12 lists it, and its copy of 2026-01-31 does not. The lowest tier is 'Starter' at $667/month, offering 100,000 component checkpoints or 1,000 page checkpoints. Source: https://applitools.com/platform-pricing/
• −2 time_limited_offer Tier "Trial" is a trial that expires, not an ongoing free tier.