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ast-grep vs DMS Software Reengineering Toolkit

ast-grep

ast-grep.github.io

DMS Software Reengineering Toolkit

semdesigns.com

Side by side

Figureast-grepDMS Software Reengineering Toolkit
Price fromFree—
Free planYes—
Free trial——
Open source——
WebYes—
WindowsYesYes
macOSYesYes
LinuxYesYes
APIYes—
Plans published11
Spec score · Code Refactoring Tools9.1 (#1)7.4 (#16)
Language supportThe site says ast-grep supports 20+ programming languages and can load custom languages.DMS can operate on mixtures of domains including languages such as C++, Java, COBOL, SQL, HTML, and Verilog.
Purposeast-grep is a fast, polyglot tool for structural code search, linting, and rewriting at scale.DMS provides customizable infrastructure for automating source program analysis, source code modification, and software generation.
SupportThe project directs users with questions or issues to GitHub or Discord and also points to Stack Overflow and Reddit.Semantic Designs says it offers DMS training, expert advice, and implementation support as desired by the customer.

Plans

ast-grep

  • ast-grepFree

ast-grep pricing →

DMS Software Reengineering Toolkit

  • DMS Software Reengineering ToolkitPriced on request

DMS Software Reengineering Toolkit pricing →

In their own words

ast-grep

ast-grep is a free, open-source tool for structural code search, linting, and rewriting. It matches patterns against syntax-tree nodes, helping developers locate and change code across a codebase rather than searching plain text. Its CLI can preview and apply rewrites interactively, and scan configurable YAML rules with error, warning, info, or hint severity. Rules can combine pattern, kind, regex, relational, and composite conditions, and CLI commands help create and snapshot-test them. The project says it supports more than 20 languages and can load custom languages. JavaScript and WebAssembly APIs allow programmatic syntax-tree work; a browser playground offers a way to try patterns without local installation. Editor options include a VS Code extension and language-server setups, including for Vim and Neovim. The tool is free, has a web interface, and is distributed through package managers or built from source. Its FAQ notes that some advanced static-analysis information is unsupported, and one rule cannot target multiple languages at once.

Visit ast-grep.github.io

DMS Software Reengineering Toolkit

DMS Software Reengineering Toolkit has no write-up on Specifiction yet; its figures are above.

Visit semdesigns.com