Open-source alternatives to Karma

3 alternatives, ranked by a published maintenance score computed from live GitHub signals (fetched 2026-09-04). We flag unmaintained projects on both sides — including Karma itself when the data says so.

About Karma: The browser test runner behind years of Angular projects, officially deprecated in 2023.

11,965 stars · last commit 2026-06-10 · latest release v6.4.4 (2024-07-29) · 402 open issues/PRs · MIT · fetched 2026-09-04

How this 54/100 was computed

Last commit	2 months ago	32/40
Latest release	2.1 years ago	0/25
Community size	GitHub stars	12/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		54/100

The alternatives

Jest

90 /100 actively maintained

The widely-used JavaScript testing framework.

45,471 stars · last commit 2026-09-03 · latest release v30.5.1 (2026-09-01) · 189 open issues/PRs · MIT · fetched 2026-09-04

How this 90/100 was computed

Last commit	yesterday	40/40
Latest release	3 days ago	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100

Vitest

87 /100 actively maintained

Vite-native test framework with a Jest-compatible API.

17,050 stars · last commit 2026-09-04 · latest release v5.0.0 (2026-09-03) · 376 open issues/PRs · MIT · fetched 2026-09-04

How this 87/100 was computed

Last commit	today	40/40
Latest release	yesterday	25/25
Community size	GitHub stars	12/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		87/100

Web Test Runner

84 /100 actively maintained

Tests in real browsers from the Modern Web project.

2,448 stars · last commit 2026-09-03 · latest release @web/test-runner-puppeteer@1.0.1 (2026-07-27) · 445 open issues/PRs · MIT · fetched 2026-09-04

How this 84/100 was computed

Last commit	yesterday	40/40
Latest release	39 days ago	25/25
Community size	GitHub stars	9/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		84/100