Open Source JavaScript Database Engines/Servers for Linux

Abacus Technologies Relational XQuery is an XQJ compatible XQuery processor that provides the ability to execute XQuery against both relational and XML data sources. Relational data can be transformed to any XML schema using XQuery's powerful features.

Bodega is a distributed objects database framework for AJAX, RIA, REST, SOA, and Web Services.

Document Object Model Structured Query Language! Example: 'SELECT {//title[1]=>innerCode} FROM {http://example.com}';

DovetailDB is a schemaless, JSON-based database. It is similar in spirit to Amazon's SimpleDB, but allows for javascript to be executed on the server, and, within that context, provides full transaction support.

FlightFeather's goal is "social networking for everyone". This means that anyone should have a chance to run a popular social networking site -- on minimal hardware, and without wasting bandwidth.

Our goal is to create the world's fastest extendable, non-transactional time series database for big data (you know, for kids)! Log file indexing is our initial focus. For example append only ASCII files produced by libraries like Log4J, or containing FIX messages or JSON objects. Occursions was built by a small team sick of creating hacks to remotely copy and/or grep through tons of large log files. We use it to index around a terabyte of new log data per day. You can use it too. Who doesn't have `just too many' log files? Occursions asynchronously tails log files and indexes the individual lines in each log file as each line is written to disk so you don't even have to wait for a second after an event happens to search for it. Occursions uses custom disk backed data structures to create and search its indexes so it is very efficient at using CPU, memory and disk. You can extend Occursions with shared libraries to support your own file formats, even binary file formats!

Porcupine is an open-source Python based web application server that provides front-end and back-end revolutionary technologies for building modern data-centric Web 2.0 applications.

REX allows you to create REST interfaces by directly connecting HTTP Requests to SQL/XML queries without programming.

SAADA transforms a set of heterogeneous astronomical data FITS files in a powerfull database deployed on the Web and including VO features. The database is located on your host and keeps under your full control. This job doesn't require to write cod

StoreX is the next generation information management system. It acts as a backend repository for applications eg. emails, blogs, twikis etc. It provides an API on a local machine or on a remote machine connected through our WebDAV protocol.

ajaxQ provides simple AJAX access to MySQL databases via SQL from within javascript. Call a few simple javascript functions to execute SELECTs, UPDATEs, INSERTs and DELETEs.

AJAX JDBC ResultSet in Javascript. Uses XMLHTTP to send xml server data to a web browser HTML form with no refresh, reload or submit (like Google Suggest). Data can be SQL, object relational map (like Hibernate), XML, other mapping (like SOAP)

XSDB XML is to DATA as HTML is to DOCUMENT. Publish and combine data as easily as HTML format and web browsers publish and view documents. Implementations in Python, javascript, java, C#/.NET.