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Device and browser testing clouds 5 companies

These companies keep thousands of real phones, tablets and browser versions in their data centres. A team's tests run on many of them at once, over the internet.

Sauce Labs logoSauce LabsSauce Labs, the American company that started this kind of service, opened an engineering centre in Delhi in 2026.Delhi NCRHired recently
BrowserStack logoBrowserStackBrowserStack was founded in Mumbai in 2011, and is still built there. It is one of the two largest device and browser testing clouds.
LambdaTest logoLambdaTestLambdaTest, founded in Noida, is a newer Indian rival. Its software also decides which tests run, on which devices and in what order.
HeadSpin logoHeadSpinHeadSpin, with engineers in Bengaluru, measures how an app actually performs on real devices, on real networks around the world.
42Gears logoAstroFarm by 42Gears logo42GearsIncludes AstroFarm by 42Gears42Gears is here for AstroFarm, its service for testing apps on real phones.BengaluruSee alsoEndpoint security and device management
The tech, explainedCross-browser and real device testing
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Test automation tools 5 companies

Tests used to be scripts written by testers. Now they can be written in plain English, generated from a description of the app, or written by AI agents.

SmartBear logoSmartBearSmartBear, with engineers in Bengaluru, sells TestComplete for testing applications and ReadyAPI for testing APIs. It also owns Swagger, widely used tools for writing down how an API works.BengaluruHired recently
AlgoShack logoAlgoShackAlgoShack, also in Bengaluru, generates tests from a description of how an application behaves, rather than from scripts.BengaluruHired recently
Testsigma logoTestsigmaTestsigma, a Bengaluru company, lets testers write tests in plain English, or have an AI model write them, so a tester who cannot code can still automate tests.
Opkey logoOpkeyOpkey, founded in Noida, automates testing of large business systems that companies buy rather than build, such as Oracle and SAP.
PostQode logoPostQodePostQode, a young Bengaluru company, puts AI agents into the developer's code editor. The agents write and run tests for APIs, websites and mobile apps.
The tech, explainedTest automation toolsAPI testingERP and packaged app testingAPI development platform↗ API and low-code development
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Testing calls and voice agents 2 companies

To test a customer care centre, software makes fake calls and chats that go through the phone menu, the chatbot and the voice agent, and reports what went wrong.

Cyara logoCyaraCyara, with engineers in Hyderabad, tests customer care centres by placing fake calls and chats through a company's phone menus, chatbots and agents.
Cekura logoCekuraCekura, a San Francisco start-up with engineers in Bengaluru, does the same for voice agents built on AI language models.
The tech, explainedContact centre testingVoice agent testing
How it all worksSoftware testingEvery new screen tried on hundreds of real phones.
See how it works →

What's changing

AI is starting to write and run the tests.

Writing and updating tests takes a lot of time. AI agents can now read an app, write the tests, run them on many devices and fix a test when a screen changes, with a person checking the results.

Read moreTest automation toolsCross-browser and real device testing
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Companies: ingrid's company map. Hiring signals: postings feed of 5 Nov 2026.