Freedom251 › File Comparison Software
Kompare

What Kompare is
Kompare is a free Linux graphical application for viewing and merging differences between source files. It can compare individual files or examine folder contents recursively, with inputs that include files, folders, or a URL and a file. Users can adjust how much diff information is shown, create and apply patches, and select differences to apply from a source to a destination before saving. Kompare can also create, display and apply diff files that capture changes between files or folders. Command-line options include comparing URLs and opening diff output, including input from standard input. The KDE Applications page lists Linux installation through AppStream application stores or a distribution package manager and links to Flathub. The application is under the GPL-2.0+ license. Its handbook describes reviewing changes shared among document editors and comparing changes across folder trees. The page links to the handbook and KDE Forum for help, and to KDE's bug tracker for issue reports. The plan is listed as free, with no paid tiers or usage limits stated.
Who it suits
Kompare suits Linux users who need to review or merge changes in source files or folder trees. It can also help people sharing document edits who want to inspect and apply selected differences.
What it does well
- Compares files and recursive folder contents
- Can create and apply patches
- Lets users apply selected differences
- Accepts files, folders or a URL and a file
- Available through Linux package channels
What to know first
- Listed platform is Linux
- The application is limited to two-way merges
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Kompare | No paid tiers or usage limits stated | Free |
As apps.kde.org lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Open the KDE Applications page at https://apps.kde.org/kompare/.
- Install Kompare through an AppStream application store or your distribution package manager, or follow the Flathub link.
- Start a comparison with files, folders, or a URL and a file.
- Review the displayed differences and apply selected changes or create a patch.
Verdict
Kompare provides file and folder comparison, patch handling and selective merging in a Linux graphical application. It is a focused option for two-way review rather than a broader multi-way merge workflow.
Questions
Is Kompare free?
Yes. Kompare is listed as free, with no paid tiers or usage limits stated.
Which operating system does Kompare support?
The listed platform is Linux. It is a desktop application.
Can Kompare compare folders?
Yes. It can compare folder contents recursively.
Can it create or apply patches?
Yes. Kompare can create and apply patches, as well as create, display, and apply diff files.
Is Kompare open source?
It is listed under the GPL-2.0+ license.
Where can I get help with Kompare?
The KDE Applications page links to the Kompare Handbook and KDE Forum for help, and to KDE’s bug tracker for reporting issues.
Facts from Kompare's own pages
- Command line
- Command-line options include comparing URLs and opening diff output, including input from standard input. · docs.kde.org, 9 Oct 2026
- Diff files
- Kompare can create, display, and apply diff files containing changes between files or folders. · docs.kde.org, 9 Oct 2026
- Diff formats
- It supports a variety of diff formats and options to customize how much information is displayed. · apps.kde.org, 9 Oct 2026
- File and folder comparison
- It compares files or folder contents recursively. · apps.kde.org, 9 Oct 2026
- Inputs
- The handbook says comparisons can use files, folders, or a URL and a file. · docs.kde.org, 9 Oct 2026
- Intended use
- The handbook describes using Kompare to review and apply changes shared between people editing documents, and to compare changes across folder trees. · docs.kde.org, 9 Oct 2026
- License
- The application page lists Kompare under the GPL-2.0+ license. · apps.kde.org, 9 Oct 2026
- Patch creation
- It can create and apply patches. · apps.kde.org, 9 Oct 2026
- Platform and installation
- The KDE Applications page lists Linux installation through AppStream application stores or a distribution package manager, and links to Flathub. · apps.kde.org, 9 Oct 2026
- Purpose
- Kompare is a graphical front end for viewing and merging differences between source files. · apps.kde.org, 9 Oct 2026
- Release
- The latest release listed on the page is version 4.2.26081, dated 2026-09-10. · apps.kde.org, 9 Oct 2026
- Selective merging
- Users can apply selected differences between source and destination files and save the applied changes. · docs.kde.org, 9 Oct 2026
- Support
- The page links to the Kompare Handbook and KDE Forum for help and to KDE's bug tracker for reporting issues. · apps.kde.org, 9 Oct 2026
Where Kompare stands on Freedom251
- File Comparison Software#11 of 33
- Diff and Merge Tools#16 of 29