Prefect
@prefecthq • Open source projects from prefecthq. Use this route to separate flagship concentration from portfolio breadth before you treat a publisher as broadly strong.
Portfolio concentration
99%
Top three share
Shows whether the organization is driven by one breakout repo or several visible projects.
Breadth
30 repos
Visible snapshot
20 repositories updated in the last 90 days.
Leading language
Python
Portfolio mix
Python (15), Unknown (7), HTML (3)
Average size
1.2K
Stars per repository
Useful for distinguishing one flagship-heavy publisher from a repeatable portfolio.
Updated: 2026-09-05(5d ago)GitHub API fallback30 repositories
99%
of the visible star count comes from this organization's top three repositories.
1.2K
stars per repository in this same snapshot.
Python
is the most common language here, with 20 repositories updated in the last 90 days.
Why this rank
This organization stands out because one flagship repo drives 79% of its visible star count.
Flagship share 79%Breakout repo: fastmcp
Organization pages work best when you separate portfolio breadth from flagship concentration. In Prefect's case, the visible top three repositories account for about 99% 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 (15), Unknown (7), HTML (3). 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 |
|---|---|---|---|
| 1 | prefecthq/fastmcp 🚀 The fast, Pythonic way to build MCP servers and clients. | Python | 27.6K |
| 2 | prefecthq/marvin an ambient intelligence library | Python | 6.2K |
| 3 | prefecthq/prefab 🎨 The generative UI framework that even humans can use. | HTML | 618 |
| 4 | prefecthq/colin A context engine that treats skills as software. | Python | 121 |
| 5 | prefecthq/fastmcp-ts The official FastMCP TypeScript library for building MCP servers, clients, and apps 🏎️ 🏎️ 🏎️ | TypeScript | 62 |
| 6 | prefecthq/prefect-mcp-server Prefect MCP server | Python | 53 |
| 7 | prefecthq/prefect-background-task-examples Examples of using Prefect for background tasks in web applications | Python | 44 |
| 8 | prefecthq/actions-prefect-deploy A GitHub Action for deploying a Prefect flow to Prefect Cloud | Python | 39 |
| 9 | prefecthq/prometheus-prefect-exporter Prometheus Prefect Exporter | Python | 35 |
| 10 | prefecthq/examples Examples of how to use Prefect | Python | 31 |
| 11 | prefecthq/prefect-operator A Kubernetes operator for managing Prefect servers and work pools | Go | 23 |
| 12 | prefecthq/prefect-cloud | Python | 10 |
| 13 | prefecthq/pydantic-ai GenAI Agent Framework, the Pydantic way | 4 | |
| 14 | prefecthq/terraform-prefect-ecs-worker Terraform module to deploy a Prefect worker on Amazon ECS. | HCL | 4 |
| 15 | prefecthq/docs | HTML | 4 |
| 16 | prefecthq/dev-log | HTML | 3 |
| 17 | prefecthq/terraform-prefect-bucket-sensor Terraform module for provisioning a bucket sensor to create Prefect events | HCL | 3 |
| 18 | prefecthq/canary-flows Test flows running against bleeding-edge Prefect | Python | 2 |
| 19 | prefecthq/cicd-example-workspaces | 1 | |
| 20 | prefecthq/prefect-fastmcp-demos FastMCP demos used by the Prefect Sales Engineering team | Python | 1 |
| 21 | prefecthq/qa-wolf-flows Flows used by QA Wolf for testing | Python | 1 |
| 22 | prefecthq/actions-release-ui-components Releases UI components using shared release manifest | 1 | |
| 23 | prefecthq/is-your-mcp-server-good one prefect api served four ways: the demos behind the 'Is Your MCP Server Good?' webinar | Python | 0 |
| 24 | prefecthq/renovate-config Shared Renovate config presets extended org-wide (github>PrefectHQ/renovate-config). | 0 | |
| 25 | prefecthq/quickstart A repo for getting started with Prefect. | Python | 0 |
| 26 | prefecthq/cyclopts Intuitive, easy CLIs based on python type hints. | 0 | |
| 27 | prefecthq/terraform-prefect-aci-worker Terraform module to deploy a Prefect worker on Azure Container Instances | HCL | 0 |
| 28 | prefecthq/actions-trigger-downstream-npm-package-updates Generalized job used to optionally trigger downstream workflows for UI components | 0 | |
| 29 | prefecthq/actions-setup-nodejs Sets up a NodeJS environment, checks out the repository, and installs dependencies. | 0 | |
| 30 | prefecthq/arq Fast job queuing and RPC in python with asyncio and redis. | Python | 0 |
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.