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Tools · Category

unit testing frameworks, ranked by real usage_

As of 4 November 2026, JUnit leads unit testing frameworks with 1,916 companies naming it in job postings, ahead of Jest at 1,768.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

Leader
JUnit · 1,916
Runner-up
Jest · 1,768
Most hiring, 90 days
JUnit
Highest postings per company
ABAP Unit
Catalogue
T-1.0.1-prov
12,110companies across the category
16%of them on JUnit
28,145postings naming a unit testing framework in 90 days
40tools with enough evidence to rank
02 — Ranking

Every unit testing framework we can measure

Companies naming the tool, and postings naming it in the last 90 days. Bars are relative to the leader.

#ToolCompaniescompaniesPostings, 90 dayspostingsper company
1
JUnitJUnit Team
1,916
6,0173.1
2
JestMeta
1,768
3,9222.2
3
CucumberSmartBear
964
2,4862.6
4
pytestpytest-dev
780
2,1042.7
5
MockitoMockito
652
1,8572.8
6
TestNGTestNG
628
1,5532.5
7
VitestVitest
498
7821.6
8
NUnitNUnit
462
8681.9
9
React Testing Library
459
1,0232.2
10
JasmineJasmine
410
9042.2
11
xUnit.NET Foundation
406
7761.9
12
MochaOpenJS Foundation
381
7131.9
13
KarmaKarma
334
7542.3
14
GherkinCucumber
312
6302.0
15
PHPUnitPHPUnit
240
3591.5
16
GoogleTestGoogle
177
4042.3
17
XCTestApple
159
2611.6
18
MSTestMicrosoft
151
2471.6
19
TestcontainersDocker
150
3312.2
20
RSpecRSpec contributors
148
1721.2
21
SpecFlowTricentis
137
2882.1
22
Testing LibraryTesting Library
107
1591.5
23
ChaiChai
100
1361.4
24
MoqMoq contributors
94
1882.0
25
EnzymeAirbnb
92
981.1
26
Pest
63
801.3
27
Mock Service WorkerMock Service Worker
50
1412.8
28
SpockSpock Framework
50
841.7
29
MockKMockK
49
911.9
30
SuperTest
48
741.5
31
Behave
47
661.4
32
unittestPython Software Foundation
41
1213.0
33
VectorCASTVector Informatik
41
1112.7
34
BehatBehat contributors
40
541.4
35
MUnitSalesforce
33
581.8
36
JBehaveJBehave
30
832.8
37
NSubstituteNSubstitute project
28
371.3
38
CodeceptionCodeception
24
291.2
39
ABAP UnitSAP
21
673.2
40
Sinon.JS
20
170.8
03 — Head to head

Compare two tools

Same data, two columns: who chooses which by size, industry and country.

JUnit vs Jest1,916 · 1,768JUnit vs Cucumber1,916 · 964JUnit vs pytest1,916 · 780JUnit vs Mockito1,916 · 652JUnit vs TestNG1,916 · 628Jest vs Cucumber1,768 · 964Jest vs pytest1,768 · 780Jest vs Mockito1,768 · 652Jest vs TestNG1,768 · 628Cucumber vs pytest964 · 780Cucumber vs Mockito964 · 652Cucumber vs TestNG964 · 628pytest vs Mockito780 · 652pytest vs TestNG780 · 628Mockito vs TestNG652 · 628
Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

JUnit leads unit testing frameworks with 1,916 companies naming it in job postings, ahead of Jest at 1,768. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/category/unit-testing-frameworks)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • CatalogueBreaknorm technology catalogue T-1.0.1-prov: 6,296 tools with vendor and category, editions folded into their parent.
  • CompaniesCompanies whose own postings name the tool as the team's system, any confidence. Candidate wish-lists excluded.
  • 90-day postingsOpen postings first seen or posted in the last 90 days that name the tool.
  • Not countedTools used by teams that do not post jobs, and companies without a career site we can read.
FAQ

unit testing frameworks: questions

How is this ranking made?

By the number of companies whose own job postings name the tool as the team's system, from the Breaknorm technology catalogue (version T-1.0.1-prov). No vendor paid for a position and no editor chose the order.

Why is this different from review-site rankings?

Review sites rank by reviews collected. This ranks by companies hiring people to work in the tool, which is closer to seats in use. It under-counts tools used by teams that rarely post jobs.

What about product editions?

Editions and sub-products () are counted under the parent so no company is counted twice.

Can I get the companies behind a number?

Yes: click a tool, see the first 20, and sign up for the full list with verified e-mails. Counting is free.

Companies and people

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