SimplytheBest Search Scripts
The simply the best collection of search scripts
The 5 best search scripts
Free MIT Open Source
A powerful open source PHP library to request a bunch of SEO relevant metrics such as detailed backlink analyses, keyword and traffic statistics, website trends, page authority, Google Pagerank, the Alexa Trafficrank and much more.
A client- and server-side library (via UMD) for textually searching arrays and hashes of objects by property or multiple properties. Designed specifically for autocomplete. The process is 3-step: score, filter, sort. Supports diacritics, smart sorting, multi-field sorting.