
Engineering teams shipping with AI have a new bottleneck: validation. Code output has accelerated. Quality hasn't. Checksum closes the gap.
Checksum is a continuous quality platform with a suite of AI agents that handle testing end-to-end, at every stage of the development lifecycle. Where most tools wait for a human to trigger them, Checksum runs autonomously in the background, generating tests, executing them, and repairing failures without manual intervention. Seventy percent of test failures are resolved automatically through real-time auto-recovery.
The platform covers every layer: end-to-end UI flows via Playwright, API endpoint chains, and targeted CI tests scoped to exactly what changed in a PR. All tests land as real code in your repository and are delivered as standard Playwright, owned by your team.
Checksum is fine-tuned on 1.5+ million test runs and integrates natively with Cursor, Claude Code, and 100+ AI coding agents. Type /checksum and your coding agent's output gets tested before it ever reaches review. Generation and healing happen on Checksum's cloud infrastructure which means no LLM tokens consumed, no local resources required.
The result: test suites that stay green as the product evolves, fewer regressions reaching production, and release confidence that scales alongside AI output.
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You know that you could be testing more to catch bugs earlier, but QA testing can take a lot of time, effort and resources to do it right. MuukTest can get growing engineering teams up to 95% coverage of end-to-end tests in just 3 months.
Our QA experts create, manage, maintain, and update E2E tests on the MuukTest Platform for your web, API, and mobile apps at record speed. We begin exploratory and negative tests after achieving 100% regression coverage within 8 weeks to uncover bugs and increase coverage. The time you spend on development is reduced by managing your testing frameworks, scripts, libraries and maintenance.
We also proactively identify flaky tests and false test results to ensure the accuracy of your tests. Early and frequent testing allows you to detect errors in the early stages your development lifecycle. This reduces the burden of technical debt later on.
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nPerf
Evaluate the bandwidth of your ADSL, xDSL, cable, optical fiber, or satellite broadband connection with our speed test. This tool employs a specialized algorithm that enables precise measurement of download and upload speeds, as well as connection latency. nPerf utilizes a global network of dedicated servers, optimized to provide sufficient bitrate to fully utilize your connection, ensuring accurate bitrate assessment. It is compatible with various broadband and mobile connections, including ADSL, VDSL, cable, FTTH/FTTB optical fiber, satellite, WiFi, WiMax, and cellular networks like 2G, 3G, 4G (LTE), and 5G. Designed by telecommunications enthusiasts, the nPerf speed test allows you to quickly and effectively gauge your Internet speed with just a single click, and best of all, it is completely free of advertisements! Additionally, it measures the time a small data packet takes for a round trip between your device and the nPerf server, with shorter delays indicating a more responsive connection. The user-friendly interface ensures that anyone can perform the test effortlessly and understand the results with ease.
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Opensignal
Opensignal's speed tests evaluate the quality of your mobile connectivity and the strength of your signal. The process includes a 5-second download test, a 5-second upload test, and a ping test, ensuring a reliably accurate assessment of the internet speeds you can expect. These tests utilize well-known internet CDN servers to gather data. The resultant speed score is derived from the median range of the collected samples. Additionally, Opensignal features a video test that plays a 15-second video clip to measure and record load times, buffering occurrences, and playback speed challenges in real-time, giving users a clear understanding of performance for both HD and SD video content on their networks. Furthermore, you can easily identify optimal coverage and the fastest available speeds with Opensignal’s comprehensive network coverage map. This map highlights signal strength down to the street level, using data gathered from local users’ tests. The included cell tower compass indicates the direction of the nearest or strongest signal, which can assist in effectively utilizing broadband and signal enhancement technologies, ensuring your connectivity needs are met. Overall, Opensignal equips users with the tools necessary to navigate and improve their mobile internet experience.
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