Utility for comparing and merging files and directories
⚡ Executive Summary & Quick Facts
Authoritative Sourcekdiff3 is kdiff3 is an open-source project written in C++: Utility for comparing and merging files and directories..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of October 2026), KDE/kdiff3 has accumulated 627 GitHub stars and 56 forks. It is written in C++, licensed under GPL-2.0, and ranks #9,450 globally. It is actively maintained with the latest commit recorded on Oct 20, 2026.”
| Repository | KDE/kdiff3 ↗ |
|---|---|
| Primary Category | developer tools |
| Language & Stack | C++ |
| Software License | GPL-2.0 |
| Community Traction | ★ 627 stars · ⑂ 56 forks · #9,450 globally |
| Maintenance | ● Active (Last commit: Oct 20, 2026) · 0 open issues |
| Target Audience | Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 93/100 · Grade A+Yes, kdiff3 is actively maintained. Continuous telemetry recorded the last code commit on Oct 20, 2026 (12 days ago). Supported by 627 stars and 56 community forks, this repository holds a calculated health index of 93/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+16
STARS · LAST 30 DAYS
1
PER DAY
#748
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +16 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +0 | +3 | +10 |
kdiff3 gained 16 stars in the last 30 days, about 1 a day, and now has 627. It is about 9 years old and has averaged roughly 70 stars a year. It ranks #748 among C++ repositories and #9,450 across all languages on GitHubRepo.
Trending Record
10
DAYS ON TRENDING
#9512
BEST RANK
Oct 20, 2026
FIRST APPEARANCE
Active
STATUS TODAY
kdiff3 has maintained a continuous presence across global trending indexes, peaking at #9512. Below is the 30-day activity profile:
💡 Overview
kdiff3 is an open-source project written in C++: Utility for comparing and merging files and directories.
Engineered for speed, consistency, and developer ease, it solves common hurdles in C++. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C++ for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/KDE/kdiff3.git
cd kdiff3⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
kdiff3 coordinates its core functionality through a modular C++ pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed kdiff3 into C++ backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open GPL-2.0 license.
🚀 Getting Started
Install kdiff3 using your package manager: `git clone https://github.com/KDE/kdiff3.git`
Initialize your project workspace or configuration file for kdiff3.
Import kdiff3 into your codebase or invoke it directly from your terminal.
Execute your test suite or run `kdiff3 --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
KDE/kdiff3 is currently ranked #9,450 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #9,445 | dropbox/dropbox-sdk-java | Java | ★ 628 | Compare ↗ |
| #9,445 | Azure/azure-resource-manager-schemas | TypeScript | ★ 628 | Compare ↗ |
| #9,445 | rancher/dashboard | TypeScript | ★ 628 | Compare ↗ |
| #9,445 | OHF-Voice/intents | Python | ★ 628 | Compare ↗ |
| #9,445 | Pagghiu/SaneCppLibraries | C++ | ★ 628 | Compare ↗ |
| #9,450 | KDE/kdiff3 This Project | C++ | ★ 627 | |
| #9,450 | c-w/ghp-import | Python | ★ 627 | Compare ↗ |
| #9,450 | jhalterman/typetools | Java | ★ 627 | Compare ↗ |
| #9,450 | reupen/columns_ui | C++ | ★ 627 | Compare ↗ |
| #9,450 | markuplint/markuplint | TypeScript | ★ 627 | Compare ↗ |
| #9,450 | manga-download/haruneko | TypeScript | ★ 627 | Compare ↗ |
Frequently Asked Questions
What does kdiff3 do? +
Utility for comparing and merging files and directories
Is kdiff3 actively maintained in 2026? +
Yes, kdiff3 is actively maintained. The latest code push was recorded on Oct 20, 2026 (12 days ago). It holds a calculated Maintenance Health Score of 93/100 (A+ rating) with 627 stars and 0 open issues.
What language is kdiff3 written in? +
The primary language is C++. Topics include: software.
How many stars does kdiff3 have? +
kdiff3 has 627 stars and 56 forks on GitHub.
How does kdiff3 rank among GitHub repositories? +
With 627 stars, KDE/kdiff3 is ranked #9,450 globally across all repositories tracked on GitHubRepo and #748 among C++ projects.
What license is kdiff3 distributed under? +
The repository reports a GPL-2.0 license. Always verify the repository LICENSE file for legal terms.
