domq.js
A modular DOM manipulation library.
lucene-kit
Lightweight and extensive, Lucene-like solution provides powerful full-text search, serialization, and parser for your application.
query-engine
Query-Engine is a NoSQL and MongoDb compliant query engine. It can run on the server-side with Node.js, or on the client-side within web browsers
open-soql
Open source implementation of the SOQL.
subindex
Generic pluggable indexing system for leveldb/levelup. Designed to be used with the level-queryengine query engine.