Search all the things
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Amalgamatic is a pluggable metasearch/federated search tool. It let's you choose a series of sources to search and then search them.

Search all the things!


Install Amalgamatic and plugins with npm. For example:

# npm install --save amalgamatic amalgamatic-sfx amalgamatic-pubmed


// Load Amalgamatic
var amalgamatic = require('amalgamatic');

// Load some plugins to search SFX and PubMed.
var sfx = require('amalgamatic-sfx');
var pubmed = require('amalgamatic-pubmed');

// Add the plugins to Amalgamatic.
amalgamatic.add('sfx', sfx);
amalgamatic.add('pubmed', pubmed);

var callback = function (err, results) {
	if (err) {
	} else {
		results.forEach( function (result) {
			console.log('\nCollection name: ' +;

// Do a search!{searchTerm: 'medicine'}, callback);


amalgamatic.add(name, plugin)

Add (register) a plugin for a collection.

  • name: A string that will be used to identify the collection.
  • plugin: A plugin object., callback)

Execute a search query.

  • query: An object optionally containing the following properties
    • searchTerm: String containing the search term(s). Default is empty string which returns no results.
    • collections: Array of strings representing the plugins you wish to search. Default is to use all registered plugins.
    • maxResults: Integer representing the maximum number of results to return from each plugin. Use 0 or a negative number (or omit the property altogether) to return the default number of results from each plugin.
    • pluginCallback: A function to execute after each plugin returns a result. It is called with two parameters. * error: An Error object or null if no error occurred.
      • results: An object containing the results from the plugin.
  • callback: A function to execute after all plugins have returned results. It is called with two parameters. * error: An Error object or null if no error occurred.
    • results: An object containing all the results from all the plugins.



If you want to use Amalgamatic in the browser, most plugins will work fine with Browserify but they may need to be run through a CORS proxy. Fortunately, we've set up a demo.