# dotnet/modernize-dotnet

Repository: https://github.com/dotnet/modernize-dotnet
Canonical: https://ross.abutalabs.com/products/modernize-dotnet
Language: Shell
License: NOASSERTION
License Family: other
Last push: 2026-08-25T19:08:41+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2049, "days_push": 8, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1209, forks 181 (observed 2026-08-28T04:03:59.889102+00:00)

## What it is
An AI-powered GitHub Copilot agent plugin that analyzes .NET applications, generates upgrade plans, and applies code changes to modernize them. It supports upgrading projects to the latest .NET and migrating from .NET Framework, and has been deprecated in favor of the microsoft/upgrade-agent-plugins repo.

## Use cases
- upgrade my .NET project to the latest version
- migrate a .NET Framework app to modern .NET
- automate .NET application modernization with Copilot
- generate an upgrade plan for legacy .NET code
- modernize .NET projects via pull requests with Copilot Coding Agent

## When to choose
- you use GitHub Copilot in VS Code, Visual Studio, or Copilot CLI and want AI-assisted .NET upgrades
- you need to migrate legacy .NET Framework codebases to modern .NET with automated code changes

## When to avoid
- you want the latest features - the repo is deprecated and development moved to microsoft/upgrade-agent-plugins
- you don't have a GitHub Copilot subscription
- you need non-.NET language migrations

## Facets
- artifact type: plugin
- maturity: maintenance
- function: agent-framework, developer-tools, llm-inference
- domain: developer-tools, backend
- platform: dotnet, windows, cross-platform, editor-plugin, cli
- tags: dotnet-upgrade, copilot-agent, code-migration, deprecated-repo, github-copilot, automation

## Member repositories
- dotnet/modernize-dotnet (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:59.889102+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 2026-08-30T06:18:34.608672+00:00, confidence not recorded.
  - readme: https://github.com/dotnet/modernize-dotnet (fetched 2026-08-28T04:03:59.889102+00:00, sha cc99bbf8af53)
- Data as of 2026-08-30T08:39:29.467469+00:00.