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Software Testing Company

51Testing

Independent software testing company in Shanghai providing QA testing teams to businesses worldwide

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About 51Testing

51Testing is an independent software testing company headquartered in Shanghai, China. It supplies quality assurance testers and testing services to companies in China and abroad.

Products and services

Software testing services: a full range of QA testing carried out by professional engineers.
Testing team supply: a project team assembled quickly, which helps with changing staffing needs.
Mobile compatibility testing: cloud-hosted mobile devices used to check apps across many models.
Exploratory testing: handles varied environments, user types and test types.

Who it works with

The company reports experience in finance, real estate, eCommerce, games, logistics and catering, and says it has worked with over 700 companies in 20 industries. Requests go through a customer manager who checks feasibility before technical support begins.

Key facts

Based in: Shanghai, China
Founded: 2004
Certifications: ISO 9001, ISO 27001, ISO 20000, CMMI 5 and CNAS
Talent pool: draws on its software testing portal community

Profile written by TrustList from the business's own published information, Oct 2026.

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Categories & features

Rankings

As of 2026-10-26. Organic ranks only; sponsored placements are never ranks.

What the business tells TrustList

Certifications and partner status: ISO 9001, ISO 27001, Other recognised certification evidence sent
Founded: 2004 (22 years) evidence sent

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