If a testing company offers performance testing as a service, does that guarantee a published throughput or latency number from an actual load test?

No. The catalog treats the service and the result as two separate facts. Performance testing appears in the services list of all seven companies, but the Performance engineering tag needs a published case study reporting a throughput or latency figure, and no company here carries that tag. The case studies on record report other measures, such as coverage or regression time, distinct from a load-test result. A published number showing what a load test actually found is absent across the composition, even though the service itself is offered everywhere.

Our load comes from a retail traffic peak. Does a published sector list tell us who has worked near that kind of load?

Only at the tail of the list. All seven companies name ecommerce among the sectors they serve, so that entry separates none of them, and healthcare, banking and edtech each appear on six of the seven. The lists run from seven sectors to twelve and cover eighteen sectors between them; the field starts to discriminate only where energy and medical devices appear on one profile each. A sector named on a profile is a claim of experience in it, and no traffic volume or peak figure travels with it.

A load test is bought as specialist time. Can we tell what a performance engineer's hour costs before the first call?

Not by grade. Five of the seven companies publish an hourly rate: three in a band of 25 to 49 US dollars and two below 25 dollars. Every one of those five is published as a single blended figure covering a whole team. The catalog stores a rate against a grade, junior through lead as well as blended, and not one company here fills a grade-specific figure, so nothing on record prices the senior end of a team apart from its average. Two publish no rate at all.

Best k6 QA companies in 2026

QA Rating is published independently, and its publisher owns no company listed in this catalog.

7 testing companies in this catalog list k6 among the frameworks and tools they work with. They are grouped below by what each is best suited for, in 7 groups. 1 of them holds a certificate confirmed by a register entry and 5 publish a rate card. Composition and order last changed on September 4, 2026.

7 companies. Ordered by the number of verified reviews on external platforms, highest first. Companies with an equal count are ordered by name.

The companies

k6: 7 companies, grouped by what they are best suited for.
#	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	DeviQA	5	Blended $25-49/hclutch.co	201-500 people	44
2	QA Madness	2	Blended $25-49/hclutch.co	51-200 people	44
3	a1qa	3	Blended $25-49/hclutch.co	1000 or more people	20
4	QAble	4	Blended up to $25/hclutch.co	51-200 people	8
5	appmatics GmbH	7	Not published	201-500 people	0
6	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.
1	DeviQA	5	Blended $25-49/hclutch.co	201-500 people	44
2	QA Madness	2	Blended $25-49/hclutch.co	51-200 people	44
3	a1qa	3	Blended $25-49/hclutch.co	1000 or more people	20
4	QAble	4	Blended up to $25/hclutch.co	51-200 people	8
5	appmatics GmbH	7	Not published	201-500 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	DeviQA	5	Blended $25-49/hclutch.co	201-500 people	44
2	QA Madness	2	Blended $25-49/hclutch.co	51-200 people	44
3	a1qa	3	Blended $25-49/hclutch.co	1000 or more people	20
5	appmatics GmbH	7	Not published	201-500 people	0
6	BetterQA	4	Not published	11-50 people	0
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	DeviQA	5	Blended $25-49/hclutch.co	201-500 people	44
2	QA Madness	2	Blended $25-49/hclutch.co	51-200 people	44
6	BetterQA	4	Not published	11-50 people	0
Device lab coverage A published device lab of 100 real devices or more, with a source.
1	DeviQA	5	Blended $25-49/hclutch.co	201-500 people	44
Nearshore for the USA At least one delivery location in Canada, Mexico, Central America or South America.
3	a1qa	3	Blended $25-49/hclutch.co	1000 or more people	20
Regulated industries At least two verified certificates from ISO 13485, HITRUST CSF, PCI QSA and ISO/IEC 27001.
6	BetterQA	4	Not published	11-50 people	0
Other companies in this axis No applicability tag met its criterion for these profiles.
7	Testrig Technologies	Not published	Blended up to $25/hclutch.co	51-200 people	7

Automation first anchors two smaller tags entirely

Automation first reaches 6 of the 7 companies in this composition, the largest tag group on this page. Embedded team model reaches 5, and Nearshore for the EU also reaches 5; both groups sit entirely inside Automation first, so neither tag names a company that Automation first does not already name. BetterQA is the only company that carries Automation first without also carrying Embedded team model. QAble carries Automation first and Embedded team model without Nearshore for the EU, the only company among that group of five to combine the first two tags without the third. Together, the three tags span the same six companies that Automation first covers on its own, leaving Testrig Technologies as the only company none of the three reaches.

Three tags that name exactly one company

Three tags on this page each name exactly one company, and each names a different one. Device lab coverage names only DeviQA. Nearshore for the USA names only a1qa, the single company in this composition with a delivery location in the Americas. Regulated industries names only BetterQA; its criterion requires at least two verified certificates from a fixed list. No two of these three narrow tags point to the same company.

Security focus stays inside the EU nearshore group

Security focus names three companies on this page: DeviQA, QA Madness and BetterQA. All three also carry Nearshore for the EU, so Security focus adds no company beyond the five that Nearshore for the EU already holds. Two members of the Nearshore for the EU group, a1qa and appmatics GmbH, stay outside Security focus.

The one verified certificate holder

BetterQA carries three verified certificates: ISO/IEC 27001, ISO 9001 and ISO 13485. Two of the three, ISO/IEC 27001 and ISO 13485, count toward the Regulated industries criterion, which draws from a fixed list of four certificates; ISO 9001 is not on that list.

Outside every tag on this page

Testrig Technologies carries none of the seven tags used on this page. Carrying no tag here means the catalog holds no sourced fact that meets any tag's published criterion for Testrig Technologies at this time.

How this ranking was put together

Membership is computed from the profile, not chosen: companies appear here when they list k6 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.
Embedded team model: The dedicated team engagement model is offered, and at least one published case study.
Nearshore for the EU: At least one delivery location in the EU or the EEA, or in Ukraine, Georgia, Serbia or Moldova.
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.
Device lab coverage: A published device lab of 100 real devices or more, with a source.
Nearshore for the USA: At least one delivery location in Canada, Mexico, Central America or South America.
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

If a testing company offers performance testing as a service, does that guarantee a published throughput or latency number from an actual load test?: No. The catalog treats the service and the result as two separate facts. Performance testing appears in the services list of all seven companies, but the Performance engineering tag needs a published case study reporting a throughput or latency figure, and no company here carries that tag. The case studies on record report other measures, such as coverage or regression time, distinct from a load-test result. A published number showing what a load test actually found is absent across the composition, even though the service itself is offered everywhere.
Our load comes from a retail traffic peak. Does a published sector list tell us who has worked near that kind of load?: Only at the tail of the list. All seven companies name ecommerce among the sectors they serve, so that entry separates none of them, and healthcare, banking and edtech each appear on six of the seven. The lists run from seven sectors to twelve and cover eighteen sectors between them; the field starts to discriminate only where energy and medical devices appear on one profile each. A sector named on a profile is a claim of experience in it, and no traffic volume or peak figure travels with it.
A load test is bought as specialist time. Can we tell what a performance engineer's hour costs before the first call?: Not by grade. Five of the seven companies publish an hourly rate: three in a band of 25 to 49 US dollars and two below 25 dollars. Every one of those five is published as a single blended figure covering a whole team. The catalog stores a rate against a grade, junior through lead as well as blended, and not one company here fills a grade-specific figure, so nothing on record prices the senior end of a team apart from its average. Two publish no rate at all.

Other axes these companies appear on

Industry: Ecommerce 7 of these 7 companies also stand there
Type of testing: Performance testing 7 of these 7 companies also stand there
Type of testing: Test automation 7 of these 7 companies also stand there
Type of testing: Accessibility testing 6 of these 7 companies also stand there

How to choose a vendor on this axis

Published by QA RatingPublished on September 4, 2026Updated on September 4, 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.