# waf/CSharpRepl

A command line C# REPL with syntax highlighting – explore the language, libraries and nuget packages interactively.

Repository: https://github.com/waf/CSharpRepl
Canonical: https://ross.abutalabs.com/products/csharprepl
Homepage: https://fuqua.io/CSharpRepl/
Language: C#
License: MPL-2.0
License Family: copyleft
Topics: repl, csharp, dotnet, cli, global-tool, interactive-programming, console
Last push: 2026-08-24T16:37:53+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 90, longevity 100
- inputs: {"age_days": 1978, "days_push": 9, "days_rel": 66, "gap_med": 5, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3341, forks 124 (observed 2026-08-28T04:07:56.902121+00:00)

## What it is
A cross-platform command-line C# REPL distributed as a .NET global tool, built on Roslyn. It offers syntax highlighting, intellisense, NuGet package installation, references to local projects, IL/lowered-C# inspection, and optional AI code completion.

## Use cases
- quickly prototype C# code without creating a scratch project
- explore a NuGet library's API interactively in the terminal
- inspect what the compiler generates with IL disassembly and lowered C#
- load and call into my own csproj or solution from a console
- attach a REPL to a running .NET process to poke at live state
- learn C# with autocomplete and inline documentation

## When to choose
- you want fast interactive C# experimentation from the terminal on Windows, macOS, or Linux
- you need to probe libraries, assemblies, or your own projects without scaffolding a console app
- you want to see compiler output (IL or lowered C#) for a snippet
- you need to debug or modify a running .NET application from a REPL

## When to avoid
- you need a full IDE experience with debugging, refactoring, or project management
- you are working in a language other than C# or a runtime other than .NET
- you need a GUI-based scratchpad like LINQPad with saved query files

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, developer-tools, interpreter
- domain: developer-tools, programming-languages
- platform: cross-platform, windows, cli
- tags: csharp, dotnet, repl, nuget, intellisense, syntax-highlighting, interactive-programming, roslyn, il-disassembly, ai-code-completion, command-line, macos, linux

## Member repositories
- waf/CSharpRepl (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:56.902121+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 2026-08-29T18:41:04.280381+00:00, confidence not recorded.
  - readme: https://github.com/waf/CSharpRepl (fetched 2026-08-28T04:07:56.902121+00:00, sha 606e3f0a749a)
  - homepage: https://fuqua.io/CSharpRepl/ (fetched 2026-08-29T09:34:16.002899+00:00, sha 21612410cfda)
- Data as of 2026-08-30T08:39:29.467469+00:00.