pholcus - [Crawler for Golang] Pholcus is a distributed, high concurrency and powerful web crawler software

•    Go

[Crawler for Golang] Pholcus is a distributed, high concurrency and powerful web crawler software.

Norconex HTTP Collector - A Web Crawler in Java

•    Java

Norconex HTTP Collector is a web spider, or crawler that aims to make Enterprise Search integrators and developers's life easier. It is Portable, Extensible, reusable, Robots.txt support, Obtain and manipulate document metadata, Resumable upon failure and lot more.

node-crawler - Web Crawler/Spider for NodeJS + server-side jQuery ;-)

•    Javascript

Web Crawler/Spider for NodeJS + server-side jQuery ;-)

Norconex HTTP Collector - Enterprise Web Crawler

•    Java

Norconex HTTP Collector is a full-featured web crawler (or spider) that can manipulate and store collected data into a repositoriy of your choice (e.g. a search engine). It very flexible, powerful, easy to extend, and portable.

crawler - A high performance web crawler in Elixir.

•    Elixir

A high performance web crawler in Elixir, with worker pooling and rate limiting via OPQ. Below is a very high level architecture diagram demonstrating how Crawler works.

QueryList - :spider: Simple, elegant, extensible PHP Web Scraper (crawler/spider),Use the css3 dom selector,Based on phpQuery! 简洁、优雅、可扩展的PHP采集工具(爬虫)，基于phpQuery。

•    PHP

QueryList is a simple, elegant, extensible PHP Web Scraper (crawler/spider) ,based on phpQuery.

Squzer - Distributed Web Crawler

•    Python

Squzer is the Declum's open-source, extensible, scale, multithreaded and quality web crawler project entirely written in the Python language.

grab-site - The archivist's web crawler: WARC output, dashboard for all crawls, dynamic ignore patterns

•    Python

grab-site is an easy preconfigured web crawler designed for backing up websites. Give grab-site a URL and it will recursively crawl the site and write WARC files. Internally, grab-site uses wpull for crawling. a dashboard with all of your crawls, showing which URLs are being grabbed, how many URLs are left in the queue, and more.

Gigablast - Web and Enterprise search engine in C++

•    C++

Gigablast is one of the remaining four search engines in the United States that maintains its own searchable index of over a billion pages. It is scalable to thousands of servers. Has scaled to over 12 billion web pages on over 200 servers. It supports Distributed web crawler, Document conversion, Automated data corruption detection and repair, Can cluster results from same site, Synonym search, Spell checker and lot more.

Scrapy - Web crawling & scraping framework for Python

•    Python

Scrapy is a fast high-level web crawling and web scraping framework, used to crawl websites and extract structured data from their pages. It can be used for a wide range of purposes, from data mining to monitoring and automated testing.

Open Search Server

•    C++

Open Search Server is both a modern crawler and search engine and a suite of high-powered full text search algorithms. Built using the best open source technologies like lucene, zkoss, tomcat, poi, tagsoup. Open Search Server is a stable, high-performance piece of software.

Monkey-Spider

•    Python

The Monkey-Spider is a crawler based low-interaction Honeyclient Project. It is not only restricted to this use but it is developed as such. The Monkey-Spider crawles Web sites to expose their threats to Web clients.

Pavuk Web Spider and Performance Measure

•    C

A function-testing, performance-measuring, site-mirroring, web spider that is widely portable and capable of using scenarios to process a wide range of web transactions, including ssl and forms.

Storm Crawler - Web crawler SDK based on Apache Storm

•    Java

StormCrawler is an open source collection of resources for building low-latency, scalable web crawlers on Apache Storm. StormCrawler is a library and collection of resources that developers can leverage to build their own crawlers. The good news is that doing so can be pretty straightforward. Often, all you'll have to do will be to declare StormCrawler as a Maven dependency, write your own Topology class (tip : you can extend ConfigurableTopology), reuse the components provided by the project and maybe write a couple of custom ones for your own secret sauce.

gocrawl - Polite, slim and concurrent web crawler.

•    Go

gocrawl is a polite, slim and concurrent web crawler written in Go.For a simpler yet more flexible web crawler written in a more idiomatic Go style, you may want to take a look at fetchbot, a package that builds on the experience of gocrawl.

gain - Web crawling framework based on asyncio.

•    Python

Web crawling framework for everyone. Written with asyncio, uvloop and aiohttp. You can add proxy setting to spider as above.

ruia - Async Python 3.6+ web scraping micro-framework based on asyncio.

•    Python

Ruia is an async web scraping micro-framework, written with asyncio and aiohttp, aims to make crawling url as convenient as possible.

NWebCrawler

This is a web crawler program written in C#.

Photon - Incredibly fast crawler designed for recon.

•    Python

The extracted information is saved in an organized manner or can be exported as json. Control timeout, delay, add seeds, exclude URLs matching a regex pattern and other cool stuff. The extensive range of options provided by Photon lets you crawl the web exactly the way you want.

pyspider - A Powerful Spider(Web Crawler) System in Python.

•    Python

WARNING: WebUI is open to the public by default, it can be used to execute any command which may harm your system. Please use it in an internal network or enable need-auth for webui.