projectdiscovery/subfinder
Fast passive subdomain enumeration tool.
Star History
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+364
STARS · LAST 30 DAYS
12
PER DAY
#125
MOST-STARRED Go
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +8 | +364 | +1.1K |
| Per day | 1 | 12 | 12 |
| Forks gained | +1 | +33 | +82 |
subfinder gained 364 stars in the last 30 days, about 12 a day, and now has 14.6K. It is about 9 years old and has averaged roughly 1.6K stars a year. It ranks #125 among Go repositories and #900 across all languages on GitHubRepo.
Trending Record
8
DAYS ON TRENDING
#2080
BEST RANK
Oct 5, 2026
FIRST APPEARANCE
Active
STATUS TODAY
subfinder has maintained a continuous presence across global trending indexes, peaking at #2080. Below is the 30-day activity profile:
💡 Overview
subfinder is an open-source project written in Go: Fast passive subdomain enumeration tool.
Engineered for speed, consistency, and developer ease, it solves common hurdles in bugbounty, hacking, hacktoberfest. 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 Go 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
$ go install github.com/projectdiscovery/subfinder@latest⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Go >= 1.21 runtime environment
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
subfinder coordinates its core functionality through a modular Go 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
Autonomous AI Agents
Orchestrate intelligent workflows and tool-calling routines with subfinder.
Model Inference & Prompting
Integrate fast, local or cloud-hosted generative AI models directly into production code.
Context Memory & RAG
Augment language models with dynamic vector retrieval and structured project memory.
Developer Productivity
Automate repetitive engineering tasks, code generation, and test creation using AI agents.
🚀 Getting Started
Install subfinder using your package manager: `go install github.com/projectdiscovery/subfinder@latest`
Initialize your project workspace or configuration file for subfinder.
Import subfinder into your codebase or invoke it directly from your terminal.
Execute your test suite or run `subfinder --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Go, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
projectdiscovery/subfinder is currently ranked #900 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #895 | LemmyNet/lemmy | Rust | ★ 14.6K | Compare ↗ |
| #896 | liketrek/TREK | TypeScript | ★ 14.6K | Compare ↗ |
| #897 | amir20/dozzle | Go | ★ 14.6K | Compare ↗ |
| #898 | pytest-dev/pytest | Python | ★ 14.6K | Compare ↗ |
| #899 | xpipe-io/xpipe | Java | ★ 14.6K | Compare ↗ |
| #900 | projectdiscovery/subfinder This Project | Go | ★ 14.6K | |
| #901 | ktorio/ktor | Kotlin | ★ 14.5K | Compare ↗ |
| #902 | casdoor/casdoor | Go | ★ 14.5K | Compare ↗ |
| #903 | palmier-io/palmier-pro | Swift | ★ 14.5K | Compare ↗ |
| #904 | Stremio/stremio-web | JavaScript | ★ 14.5K | Compare ↗ |
| #905 | apache/dolphinscheduler | Java | ★ 14.5K | Compare ↗ |
Frequently Asked Questions
What does subfinder do? +
Fast passive subdomain enumeration tool.
What language is subfinder written in? +
The primary language is Go. Topics include: bugbounty, hacking, hacktoberfest, osint, reconnaissance.
Is subfinder actively maintained? +
Yes, the last recorded push was on Oct 6, 2026 with 2 open issues being tracked.
How many stars does subfinder have? +
subfinder has 14,566 stars and 1,633 forks on GitHub.
How does subfinder rank among GitHub repositories? +
With 14,566 stars, projectdiscovery/subfinder is ranked #900 globally across all repositories tracked on GitHubRepo and #125 among Go projects.
What license is subfinder distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
