A scalable web crawler framework for Java
Open source enterprise search server for websites, files, and data
Free batch downloader for image, wallpaper, video, audio, document,
Distributed web crawler admin platform for spiders management
ACHE is a web crawler for domain-specific search
Automated mobile app crawler and testing tool built on Appium
An Android rich text class library that supports graphic & text mixing
Lightweight Java web crawler framework with jQuery-style extraction
WebCollector is an open source web crawler framework based on Java.
Open source Search Engine and Enterprise Search