PolyglotPiranha vs ReSharper
PolyglotPiranha
github.com
ReSharper
jetbrains.comSide by side
| Figure | PolyglotPiranha | ReSharper |
|---|---|---|
| Price from | — | $32.42/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 0 | 2 |
| Spec score · Code Refactoring Tools | 7.2 (#19) | 8.1 (#7) |
| Purpose | Polyglot Piranha is a lightweight code transformation toolset for automating large scale changes and is used at Uber mostly to clean up stale feature flags. | ReSharper provides coding assistance and code quality tools for .NET development. |
| Security | The repository identifies the project as provided as-is and does not state security certifications or compliance claims. | JetBrains says it encrypts data in transit using TLS and at rest using algorithms such as AES-256 where technically feasible. |
| Support | Users with questions or bug reports are directed to open a GitHub issue. | JetBrains directs users to the ReSharper Knowledge Base and community forum for questions and technical difficulties. |
Plans
In their own words
PolyglotPiranha
PolyglotPiranha is a free, multilingual structural search-and-replace engine for code cleanup. It can refactor stale feature-flag code when given a flag name, expected behavior, and configured feature-flag API rules. Rules can form graphs, and built-in language-specific cleanups include simplifying boolean expressions and if-else statements, removing empty declarations and files, and inlining local variables. Queries and filters may use Tree-sitter queries, regular expressions, or Piranha’s concrete syntax. The project is available as a Python library and command-line tool, with the Python API wrapping the CLI. The CLI lists Java, Swift, Python, Kotlin, Go, TSX, and TypeScript as target languages. Dry runs prevent in-place rewriting and produce summaries of matches, rewrites, and resulting file content. API configuration requires code path, configuration path, target language, and substitutions, with optional rules.toml and edges.toml files. Python installation uses pip; the CLI can be built with Rust and Cargo or obtained from releases. Piranha is Apache 2.0, provided as is, and not an official Uber product.
ReSharper
ReSharper provides coding assistance and code quality tools for.NET development. It analyzes C#, VB.NET, XAML, ASP.NET, HTML, and XML as code is written. Editing features include extended IntelliSense, transformations, namespace imports, code rearrangement, and documentation display. Developers can generate properties, overloads, implementations, and comparers, then apply refactorings across a solution or to smaller sections. Navigation helps move among files, types, and members, and follow symbols to usages, base or derived symbols, and implementations. Other tools include a unit test runner, code templates, debugging assistance, project dependency viewing, and internationalization assistance. The VS Code edition also works with Cursor, Antigravity IDE, Devin Desktop, Kiro IDE, and compatible editors. It runs on Windows, macOS, and Linux on x64 and ARM64, including Apple silicon on macOS, and requires a.NET SDK version 6.0 or later on PATH. A 30-day trial starts after installation. Afterward, use requires a commercial license or a free non-commercial license. The commercial plan costs $389 a year per user.