Apps similar to Alasql include Underscore.js, which is free and open source. Other options are Lodash, PouchDB, ForerunnerDB and TaffyDB. In total there are six apps like Alasql for the web and self-hosting.
Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
Lo-Dash is a drop-in replacement for Underscore.js that delivers performance improvements, bug fixes, and additional features.
United States
PouchDB is an open-source JavaScript database inspired by Apache CouchDB that is designed to run well within the browser.
ForerunnerDB is the only JavaScript database with a simple, rich JSON-based query language. Based on MongoDB's query language and built with web applications in mind, ForerunnerDB will have you up and running in minutes.
United Kingdom