Anthropic
@anthropics • Open source projects from anthropics. Use this route to separate flagship concentration from portfolio breadth before you treat a publisher as broadly strong.
Portfolio concentration
79%
Top three share
Shows whether the organization is driven by one breakout repo or several visible projects.
Breadth
29 repos
Visible snapshot
21 repositories updated in the last 90 days.
Leading language
Python
Portfolio mix
Python (8), Unknown (8), Rust (4)
Average size
2.2K
Stars per repository
Useful for distinguishing one flagship-heavy publisher from a repeatable portfolio.
Updated: 2026-07-29(9h ago)GitHub API fallback29 repositories
79%
of the visible star count comes from this organization's top three repositories.
2.2K
stars per repository in this same snapshot.
Python
is the most common language here, with 21 repositories updated in the last 90 days.
Why this rank
This organization stands out because one flagship repo drives 54% of its visible star count.
Flagship share 54%Breakout repo: financial-services
Organization pages work best when you separate portfolio breadth from flagship concentration. In Anthropic's case, the visible top three repositories account for about 79% of total stars in this snapshot, which helps explain whether the organization is known for one breakout project or for a broader repeatable portfolio.
The dominant language mix here is Python (8), Unknown (8), Rust (4). That makes this page useful not just for popularity checks, but also for seeing what technical shape an organization's public ecosystem actually has.
Top Repositories
| # | Repository | Language | Stars | 🍴 Forks | Updated |
|---|---|---|---|---|---|
| 1 | anthropics/financial-services | Python | 33.9K | 5K | 1 weeks ago |
| 2 | anthropics/claude-for-legal A suite of plugins for legal workflows | Python | 8.9K | 1.7K | 1 weeks ago |
| 3 | anthropics/defending-code-reference-harness Skills for threat modeling, scanning, triage, patching, plus an autonomous scanning harness you can /customize | Python | 6.9K | 552 | 1 weeks ago |
| 4 | anthropics/claudes-c-compiler Claude Opus 4.6 wrote a dependency-free C compiler in Rust, with backends targeting x86 (64- and 32-bit), ARM, and RISC-V, capable of compiling a booting Linux kernel. | Rust | 2.7K | 240 | 5 months ago |
| 5 | anthropics/claude-desktop-buddy Reference and an example for the Bluetooth API for makers in Claude Cowork & Claude Code Desktop | C++ | 2.5K | 433 | 3 months ago |
| 6 | anthropics/cwc-workshops | TypeScript | 1.9K | 532 | 1 months ago |
| 7 | anthropics/jacobian-lens Companion code for the global workspace interpretability paper | Python | 1.6K | 234 | 5 days ago |
| 8 | anthropics/launch-your-agent Claude Code skills that take a founder from idea to a live Claude Managed Agent: interview, scope a v0, launch in their own account, grade it, iterate, and schedule it | HTML | 880 | 169 | 3 weeks ago |
| 9 | anthropics/buffa Rust implementation of protobuf with editions support, JSON serialization, and zero-copy views | Rust | 851 | 78 | 5 days ago |
| 10 | anthropics/html-effectiveness HTML effectiveness examples | HTML | 605 | 50 | 3 weeks ago |
| 11 | anthropics/cwc-long-running-agents | Shell | 603 | 61 | 2 months ago |
| 12 | anthropics/claude-plugins-community Community plugin marketplace for Claude Cowork and Claude Code. Read-only mirror — submit plugins at clau.de/plugin-directory-submission. | Python | 326 | 81 | Today |
| 13 | anthropics/ClaudeForFoundationModels Claude support for Apple Foundation Models | Swift | 267 | 25 | 5 days ago |
| 14 | anthropics/code-migration-kit-with-claude-code Prompts, templates, and scripts for running large-scale language migrations with Claude Code | Python | 248 | 18 | 3 weeks ago |
| 15 | anthropics/k12-teacher-skills Skills and eval rubrics for K-12 teachers, co-developed with Learning Commons | Python | 216 | 43 | 2 weeks ago |
| 16 | anthropics/agent-sdk-workshop | Python | 50 | 17 | 4 months ago |
| 17 | anthropics/cargo-nix-plugin A Nix plugin that resolves Cargo workspaces natively and allows for crate level builds | Rust | 44 | 11 | Yesterday |
| 18 | anthropics/cryptography-research-demo | C | 41 | 5 | Today |
| 19 | anthropics/headvis Head Vis Public Release | Svelte | 39 | 6 | 2 months ago |
| 20 | anthropics/claude-tag-plugins | Shell | 32 | 13 | 6 days ago |
| 21 | anthropics/tokio A runtime for writing reliable asynchronous applications with Rust. Provides I/O, networking, scheduling, timers, ... | Rust | 25 | 12 | 1 months ago |
| 22 | anthropics/maestro Maestro: Netflix’s Workflow Orchestrator | 23 | 17 | 6 months ago | |
| 23 | anthropics/swift-markdown A Swift package for parsing, building, editing, and analyzing Markdown documents. | 15 | 5 | 2 months ago | |
| 24 | anthropics/argo-cd Declarative Continuous Deployment for Kubernetes | 15 | 9 | 4 months ago | |
| 25 | anthropics/terragrunt Terragrunt is a flexible orchestration tool that allows Infrastructure as Code written in OpenTofu/Terraform to scale. | 14 | 8 | 4 months ago | |
| 26 | anthropics/riegeli-rs | 7 | 2 | 1 months ago | |
| 27 | anthropics/nix-eval-jobs Parallel nix evaluator with a streamable json output [maintainers @Mic92, @adisbladis] | 7 | 4 | 6 months ago | |
| 28 | anthropics/leptos-chartistry Chartistry is an extensible charting library for Leptos | 2 | 0 | 6 months ago | |
| 29 | anthropics/rayon Rayon: A data parallelism library for Rust | 0 | 0 | 6 days ago |
Next step after the organization read
Open a flagship repository, compare a couple of portfolio leaders, or return to the organization map when you want a broader concentration read.
Learn and methodology
Keep trust-building context reachable, but behind the first data read instead of ahead of it.
How to read this organization snapshot
Total stars are useful as a discovery signal, but they do not tell you whether a team maintains every repository equally. Pair this page with release cadence, maintainer activity, and the flagship concentration shown above before making adoption decisions.
For broader background on GitStar's ranking logic and editorial guidance, see Methodology & Editorial Standards.