# OpenCover/opencover

A code coverage tool for .NET 2 and above (WINDOWS OS only), support for 32 and 64 processes with both branch and sequence points

Repository: https://github.com/OpenCover/opencover
Canonical: https://ross.abutalabs.com/products/opencover
Homepage: https://blog.many-monkeys.com
Language: C++
License: NOASSERTION
License Family: other
Topics: opencover, profiler, coverage
Archived: true
Last push: 2021-11-15T08:33:17+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5671, "days_push": 1752, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1324, forks 244 (observed 2026-08-28T04:04:22.405500+00:00)

## What it is
OpenCover is a code coverage tool for .NET 2 and above on Windows, supporting 32 and 64-bit processes with both branch and sequence point coverage. The project is now in archive mode, with the maintainer recommending alternatives like AltCover.

## Use cases
- measure code coverage of .NET unit tests
- get branch and sequence point coverage on Windows
- run coverage on 32-bit and 64-bit .NET processes
- generate coverage reports for legacy .NET Framework apps
- integrate coverage into CI pipelines for .NET

## When to choose
- you need coverage for legacy .NET Framework (2+) applications on Windows
- you need branch-level coverage with 32/64-bit process support
- your toolchain already depends on OpenCover output formats

## When to avoid
- you target .NET Core/.NET 5+ or Linux containers - use AltCover instead
- you need an actively maintained tool with regular updates
- you need cross-platform or Mono support

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: testing, benchmarking
- domain: testing, developer-tools, windows
- platform: windows, dotnet, cli
- tags: code-coverage, dotnet, profiler, branch-coverage, sequence-points, archived

## Member repositories
- OpenCover/opencover (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:22.405500+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:46:40.811822+00:00, confidence not recorded.
  - readme: https://github.com/OpenCover/opencover (fetched 2026-08-28T04:04:22.405500+00:00, sha be7464f9ef5a)
  - homepage: https://blog.many-monkeys.com (fetched 2026-08-29T12:05:40.363338+00:00, sha 1b47fa3d8126)
  - site_page: https://blog.many-monkeys.com/posts/customsing_new_relic_installation_during_azure_deployments (fetched 2026-08-29T12:05:40.372828+00:00, sha cbe1486a8be7)
  - site_page: https://blog.many-monkeys.com/posts/questions_about_open_source_and_liability_in_the_workplace (fetched 2026-08-29T12:05:40.374747+00:00, sha 9e10f6f58281)
- Data as of 2026-08-30T08:39:29.467469+00:00.