The most active C++ repositories on GitHub, August 2026

As of August 2026, the most active C++ repository on GitHub is microsoft/PowerToys (137.6k stars). The top 10 C++ repositories tracked by StarHunt hold 774.0k combined stars, averaging 77.4k each, with 10 of 10 updated in the last week. Among the 163 of their contributors StarHunt could place in one of six tracked countries, 48% are in the United States.

What are the most active C++ repositories in August 2026?

This month's C++ ecosystem on GitHub is as active as ever. Here are the repositories leading the way.

#	Repository	Stars	Last push
1	microsoft/PowerToys Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on advanced-paste color-picker	⭐ 137,602	today
2	electron/electron :electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS c-plus-plus chrome	⭐ 122,408	today
3	godotengine/godot Godot Engine – Multi-platform 2D and 3D game engine game-development game-engine	⭐ 115,400	yesterday
4	bitcoin/bitcoin Bitcoin Core integration/staging tree bitcoin c-plus-plus	⭐ 89,830	yesterday
5	colbymchenry/codegraph Pre-indexed code knowledge graph, auto syncs on code changes, for Claude Code, Codex, Gemini, Cursor	⭐ 65,542	yesterday

Which C++ repositories grew the most this month?

Looking at month-over-month changes in the C++ ecosystem:

• llvm/llvm-project: +34 stars
• ClickHouse/ClickHouse: +29 stars
• nlohmann/json: +18 stars
• gabime/spdlog: +11 stars
• google/googletest: +6 stars

The biggest mover this month was llvm/llvm-project, which gained 34 stars.

Which C++ repositories are growing fastest?

These C++ repositories gained the most stars over the past month:

• llvm/llvm-project +34 stars this month (39.7k total)
• ClickHouse/ClickHouse +29 stars this month (49.1k total)
• nlohmann/json +18 stars this month (50.3k total)
• gabime/spdlog +11 stars this month (29.5k total)
• google/googletest +6 stars this month (38.9k total)

How active is the C++ ecosystem this month?

Across the top 10 C++ repositories tracked by StarHunt:

• Combined stars: 773,965
• Average stars per repository: 77,396
• Repositories with a commit in the last 7 days: 10 out of 10

These repositories are where the best C++ engineers spend their time. StarHunt helps you find them.

Who builds the top C++ repositories?

StarHunt has indexed 163 contributors across these C++ repositories. Among the 163 located in one of the six tracked countries (United States, United Kingdom, France, Germany, Spain, Canada), the split is:

• United States: 48% (78)
• United Kingdom: 17% (28)
• Germany: 15% (25)
• Canada: 11% (18)
• France: 7% (11)
• Spain: 2% (3)

55% have a public email on their GitHub profile.

A few standouts across individual repositories:

• llvm/llvm-project — 50% of llvm/llvm-project's StarHunt-indexed contributors located in one of the six tracked countries are in the United States.

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