CopyPaste vs Duplo

CopyPaste is a free, local-first clipboard manager for Windows and macOS. It saves clipboard history for text, images, files, folders, links, audio and video, with previews tailored to the content. Full-text search, pins, custom labels and colors, and filters by content, category and item type help organize saved items; it also supports snippets and rich text. The project says history stays on the device, without cloud storage, servers, syncing, telemetry, analytics or accounts. CopyPaste works offline and excludes passwords and clipboard content from password managers such as 1Password and Bitwarden. The standalone version checks for updates without sending user data. Windows requirements are Windows 10 version 1809 or later, or Windows 11 on x64. On macOS, it requires Ventura 13.0 or later and has a universal binary for Apple Silicon and Intel. Linux support ended after v2.11.0, and those builds receive no fixes, security updates or new features. CopyPaste is open source under GPL-3.0; redistributing it within another product requires separate terms.

Duplo is a free tool for locating duplicated source-code blocks in large codebases. It has built-in language support for C/C++, Java, C#, VB, GCC assembly, Ada, Erlang, TypeScript and Swift, and can also scan arbitrary text files, including for duplicates within one file. For supported languages, it can filter comments, preprocessor directives and other syntax before checking for repeated code. Files can be provided through standard input or a separate file list. Duplo produces text reports as well as JSON and XML output. The project describes XML reports as usable in continuous integration tools such as GitHub Actions and TeamCity, and links to a GitHub Actions extension that can fail a build when duplicates are found. That extension has settings for minimum duplicate lines, minimum line length and maximum files reported. Prebuilt binaries are available for Alpine Linux, macOS and Windows; it can also be built from source. Duplo is free under GNU GPL version 2 or later, and is provided without warranty.