Duplo
6.5#3 in code clone detection toolsFree planFree planLinuxmacOSWindows
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| Fact | Duplo | Simian Similarity Analyzer |
|---|---|---|
| License | Duplo is free software under the GNU General Public License version 2 or, at the user's option, any later version, and is provided without warranty. | Simian Similarity Analyzer is licensed under the Apache Software License, Version 2.0. |
| Performance | The README reports processing 266 Quake2 files and 102,740 lines in 9 seconds on modern hardware in 2025, and says multithreading offers almost linear improvement. | The maker reports a JDK test analyzing over 2.4 million lines and finding more than 140,000 duplicate lines in under five seconds, with results varying by hardware, operating system, and options. |
| Purpose | Duplo finds duplicated code blocks in large codebases. | Simian scans source files and reports duplicated blocks of code across codebases. |
| Support | The maintainer asks users to open an issue for feedback, feature requests, and bug reports. | The maker directs users to Stack Overflow for help with Simian. |
It suits developers who want to find repeated code or text in repositories and use reports in continuous integration. It may also fit projects that need prebuilt binaries for Alpine Linux, macOS, or Windows.
Simian suits developers who want repository-level duplicate-code checks that can run locally, from scripts, or in a build pipeline. It may also fit teams seeking configurable text-based clone detection without a paid license.