dudevskatana

AGPL-3.0 32 2 425

54 (month) Feb 20 2022 0.1.3(2023-08-01 20:28:33 ago)

16,499 6 18 MIT

Nov 07 2022 v1.5.0(2026-03-10 14:52:47 ago)

Dude (dude uncomplicated data extraction) is a very simple framework for writing web scrapers using Python decorators. The design, inspired by Flask, was to easily build a web scraper in just a few lines of code. Dude has an easy-to-learn syntax.

The simplest web scraper will look like this: ```python from dude import select

@select(css="a") def get_link(element): return {"url": element.get_attribute("href")} ```

dude supports multiple parser backends: - playwright
- lxml
- parsel - beautifulsoup - pyppeteer - selenium

Katana is a next-generation web crawling and spidering framework written in Go by ProjectDiscovery. It is designed for fast, comprehensive endpoint and asset discovery and is widely used in the security research and bug bounty communities.

Katana offers multiple crawling modes:

Standard mode Fast HTTP-based crawling without a browser. Parses HTML, JavaScript files, and other resources to discover endpoints and links.
Headless mode Uses a headless Chrome browser for crawling JavaScript-rendered pages and single-page applications (SPAs).
Passive mode Discovers URLs from external sources (Wayback Machine, CommonCrawl, etc.) without actively visiting the target.

Key features include:

Scope control Configurable crawl scope with regex patterns for including/excluding URLs, domains, and file extensions.
JavaScript parsing Extracts endpoints from JavaScript files, inline scripts, and AJAX requests even in standard (non-headless) mode.
Customizable output Filter and format output with field selection, JSON output, and custom templates.
Rate limiting Built-in rate limiting and concurrency control to avoid overwhelming targets.
Proxy support HTTP and SOCKS5 proxy support with rotation.
Form filling Can detect and auto-fill forms to discover endpoints behind form submissions.

While Katana was designed for security research and reconnaissance, its fast crawling capabilities and JavaScript parsing make it equally useful for web scraping discovery and sitemap generation.

Highlights

fastpopularlarge-scale

Example Use

```python from dude import select """ This example demonstrates how to use Parsel + async HTTPX To access an attribute, use: selector.attrib["href"] You can also access an attribute using the ::attr(name) pseudo-element, for example "a::attr(href)", then: selector.get() To get the text, use ::text pseudo-element, then: selector.get() """ @select(css="a.url", priority=2) async def result_url(selector): return {"url": selector.attrib["href"]} # Option to get url using ::attr(name) pseudo-element @select(css="a.url::attr(href)", priority=2) async def result_url2(selector): return {"url2": selector.get()} @select(css=".title::text", priority=1) async def result_title(selector): return {"title": selector.get()} @select(css=".description::text", priority=0) async def result_description(selector): return {"description": selector.get()} if __name__ == "__main__": import dude dude.run(urls=["https://dude.ron.sh"], parser="parsel") ```

```go package main import ( "context" "math" "github.com/projectdiscovery/katana/pkg/engine/standard" "github.com/projectdiscovery/katana/pkg/output" "github.com/projectdiscovery/katana/pkg/types" ) func main() { // Configure crawl options options := &types.Options{ MaxDepth: 3, FieldScope: "rdn", // restrict to root domain BodyReadSize: math.MaxInt, Timeout: 10, Concurrency: 10, Parallelism: 10, Delay: 0, RateLimit: 150, Strategy: "depth-first", OnResult: func(result output.Result) { // Process each discovered URL println(result.Request.URL) }, } // Create and run the crawler crawlerOptions, _ := types.NewCrawlerOptions(options) defer crawlerOptions.Close() crawler, _ := standard.New(crawlerOptions) defer crawler.Close() // Start crawling _ = crawler.Crawl("https://example.com") } ```

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