Best REST Assured QA companies in 2026
QA Rating is published independently, and its publisher owns no company listed in this catalog.
The companies
| # | Company | Case studies | Published rates | Team size | Reviews |
|---|---|---|---|---|---|
| Automation first Test automation is offered as a service, and at least one published case study reports a coverage or regression time metric. | |||||
| 1 | ScienceSoft | 2 |
| 501-1000 people | 85 |
| 2 | Luxe Quality | 2 |
| 51-200 people | 21 |
| 3 | a1qa | 3 |
| 1000 or more people | 20 |
| 4 | QAble | 4 |
| 51-200 people | 8 |
| 5 | BetterQA | 4 | Not published | 11-50 people | 0 |
| Nearshore for the EU At least one delivery location in the EU or the EEA, or in Ukraine, Georgia, Serbia or Moldova. | |||||
| 1 | ScienceSoft | 2 |
| 501-1000 people | 85 |
| 2 | Luxe Quality | 2 |
| 51-200 people | 21 |
| 3 | a1qa | 3 |
| 1000 or more people | 20 |
| 5 | BetterQA | 4 | Not published | 11-50 people | 0 |
| Embedded team model The dedicated team engagement model is offered, and at least one published case study. | |||||
| 3 | a1qa | 3 |
| 1000 or more people | 20 |
| 4 | QAble | 4 |
| 51-200 people | 8 |
| Nearshore for the USA At least one delivery location in Canada, Mexico, Central America or South America. | |||||
| 1 | ScienceSoft | 2 |
| 501-1000 people | 85 |
| 3 | a1qa | 3 |
| 1000 or more people | 20 |
| Security focus Security testing is offered, together with either penetration testing or a verified ISO/IEC 27001 certificate, and at least one published case study. | |||||
| 1 | ScienceSoft | 2 |
| 501-1000 people | 85 |
| 5 | BetterQA | 4 | Not published | 11-50 people | 0 |
| Regulated industries At least two verified certificates from ISO 13485, HITRUST CSF, PCI QSA and ISO/IEC 27001. | |||||
| 5 | BetterQA | 4 | Not published | 11-50 people | 0 |
| Other companies in this axis No applicability tag met its criterion for these profiles. | |||||
| 6 | Coderio | Not published |
| 501-1000 people | 10 |
| 7 | Testrig Technologies | Not published |
| 51-200 people | 7 |
Does a security tag mean the same evidence behind every company that holds it
Security focus reaches 2 of the 7: ScienceSoft and BetterQA. Both clear the same written condition, security testing offered together with either penetration testing or a verified ISO/IEC 27001 certificate, plus a published case study, and each clears it through a different half of that either/or. ScienceSoft's route runs through a penetration-testing service and a case study describing a penetration test performed for a client. BetterQA offers no penetration-testing service on its published list; its route runs through a verified ISO/IEC 27001 certificate instead.
A case study built on a client penetration test shows the company running that engagement for someone else. A certificate shows the company's own environment passed an audit, and says nothing about how it tests a client's system. The tag treats both as equal proof of the same label, so the record behind a given company's tag is worth opening before assuming the two mean the same service.
Who is expected to keep a REST Assured suite matching the API after delivery ends
An API-level suite tracks a contract between two systems, not a screen a person looks at, and that contract changes with each release on either side. A suite nobody is assigned to maintain drifts out of sync with the API within a release or two, so which engagement model covers the ongoing work matters as much as who builds the suite in the first place.
5 of the 7 companies here publish at least one engagement model; Luxe Quality and BetterQA publish none. Managed testing, where the vendor keeps running the testing function past a single delivery, is offered by 2 of the 5: ScienceSoft and a1qa. Project work, scoped to a defined deliverable with a fixed end, is offered by 3: a1qa, QAble and Testrig Technologies. a1qa is the only company recording all four engagement models that appear anywhere in this group, staff augmentation, a dedicated team, managed testing and project work, yet its own recorded client stage is enterprise only, while ScienceSoft, QAble and BetterQA each record both startup and enterprise clients.
A startup buying a fixed, project-based engagement for an API suite is buying a snapshot: once that contract closes, updating the suite against the next API change falls to whoever the buyer arranges next, in house or with a different vendor, and the engagement-model field does not say which of the two follows the handoff.
Where the number behind an automation tag was actually produced
Automation first reaches 5 of the 7: ScienceSoft, Luxe Quality, a1qa, QAble and BetterQA. The condition needs test automation offered as a service and a published case study reporting a coverage or regression-time figure; it does not ask which framework produced that figure, and no case study record on any of these five profiles names one.
For a buyer whose actual interest is the contract between two systems rather than what a user sees on screen, an Automation first tag here is no proof that REST Assured produced the counted result: the framework list and the case-study metric sit in two separate fields with no link between them. The API-specific question, what share of an automated suite runs against the API directly, still goes to the vendor.
What a profile without a tag on this axis still records
Coderio and Testrig Technologies carry no applicability tag on this page. Both still record REST Assured in their framework list and the same set of other fields the table shows for everyone: delivery locations, team size and a published rate. Coderio has not published a case study or a certificate; Testrig Technologies has not published a case study, a certificate or an engagement model. Neither gap is a failed check: no condition ran to a negative result, only to an absence of the field it reads. Every condition behind the tags above is listed with its fields on the methodology page, and a buyer can check those fields directly on either profile rather than relying on a tag neither one carries.
How this ranking was put together
Membership is computed from the profile, not chosen: companies appear here when they list REST Assured among the frameworks and tools they work with, as their own profile states. Position in a ranking cannot be bought. Paid options are limited to the extended profile, labelled sponsor slots and lead forms, and none of them affect tags or order.
The table compares the fields that decide this axis: case studies, published rates, team size, plus the number of verified reviews on external platforms. Rates, minimum project size and onboarding time carry the source they came from next to the value.
- Automation first: Test automation is offered as a service, and at least one published case study reports a coverage or regression time metric.
- Nearshore for the EU: At least one delivery location in the EU or the EEA, or in Ukraine, Georgia, Serbia or Moldova.
- Embedded team model: The dedicated team engagement model is offered, and at least one published case study.
- Nearshore for the USA: At least one delivery location in Canada, Mexico, Central America or South America.
- Security focus: Security testing is offered, together with either penetration testing or a verified ISO/IEC 27001 certificate, and at least one published case study.
- Regulated industries: At least two verified certificates from ISO 13485, HITRUST CSF, PCI QSA and ISO/IEC 27001.
The criteria for this axis are on the methodology page, together with field definitions and the rule for editorial order. Changes of order are recorded in the changelog.
Questions
- Does a REST Assured listing on a vendor's profile mean it tests only at the API level, with no work through the browser?
- No, not on the record collected here. None of the 7 companies on this page lists REST Assured as its only automation tool; each one also names at least one browser or mobile automation framework, such as Selenium, Cypress, Playwright or Appium, alongside it, and all seven also pair it with Postman specifically. The framework field records which tools a company reports; it says nothing about how the engineering time behind a project splits between the interface a user sees and the contract between two systems underneath it. Where that split is the actual question, such as how much of a planned test suite runs directly against an API rather than through a UI built on top of it, the field leaves it open and the vendor has to be asked directly.
- If our systems sit in banking or healthcare, does an industries listing on this page already show a vendor has tested integrations in that sector?
- Not by itself. All 7 companies on this page list both banking and healthcare among the industries they serve, so an industries match does not separate one candidate from another for either sector here. Case studies are published by 5 of the 7, and none of those case studies records banking as its industry; the sectors that do appear range from ecommerce and gaming to software and advertising. A buyer checking for prior work on a banking system integration is better served by asking a candidate for a project description naming that kind of engagement than by reading the industries field as evidence one took place.
Other axes these companies appear on
- Industry: Banking 7 of these 7 companies also stand there
- Industry: Ecommerce 7 of these 7 companies also stand there
- Industry: Healthcare 7 of these 7 companies also stand there
- Type of testing: API testing 6 of these 7 companies also stand there
Published by QA RatingPublished on September 6, 2026Updated on September 6, 2026
Every fact about a company comes from a listed source. A field without a source stays empty. A certificate counts as confirmed only when a registry, certificate or auditor report backs it; a certificate the company only claims about itself is published separately, under that label. Vendors can request a correction at hello@qa-rating.com. A correction is applied when it comes with a public source.