The Top 100 Most Popular Code Libraries

	A	B	C	D	E	F	G	H	I	J
1			Takipi - God Mode in Production Code	www.Takipi.com
2
3		Java			Ruby			JavaScript
4
5		Library	Count (out of 10,000 projects)	Type	Name	Count (out of 10,000 projects)	Type	Name	Count (out of 10,000 projects)	Type
6	1	slf4j-api	3068	logging	rails	1919	rails	grunt	813	build
7	2	junit	3068	testing	rake	1652	build	mocha	755	testing
8	3	log4j	891	logging	rspec	1586	testing	express	631	web framework
9	4	slf4j-log4j12	645	logging	jquery-rails	1237	util	grunt-jshint	483	testing
10	5	servlet-api	568	java	sqlite3	1085	db	underscore	416	func prog
11	6	commons-io	519	util	uglifier	1085	util	grunt-uglify	387	build
12	7	commons-lang	504	util	sass-rails	1035	web	request	336	http
13	8	guava	483	util	coffee-rails	962	language	async	332	http
14	9	mockito-all	431	mocks	rspec-rails	840	testing	should	303	testing
15	10	spring-context	384	util	pg	705	db	grunt-concat	303	build
16	11	spring-test	367	testing	jeweler	658	util	uglify-js	286	build
17	12	logback-classic	340	logging	haml	598	templates	jade	270	templates
18	13	commons-logging	334	logging	json	590	parser	grunt-watch	256	utility
19	14	testng	331	testing	sinatra	570	web	optimist	238	parser
20	15	jcl-over-slf4j	320	logging	capybara	565	testing	socket.io	230	http
21	16	commons-codec	310	util	bundler	534	build	grunt-clean	227	build
22	17	spring-core	298	util	thin	487	web	vows	203	testing
23	18	joda-time	290	util	factory_girl_rails	482	language	connect	201	utility
24	19	jackson-mapper-asl	280	parsing	devise	467	security	jquery	197	utility
25	20	spring-webmvc	277	web	guard-rspec	467	testing	colors	191	utility
26	21	httpclient	254	web	database_cleaner	447	db	coffee-script	172	language
27	22	mockito-core	252	mocks	simplecov	446	testing	chai	169	testing
28	23	android	228	android	nokogiri	438	parser	jshint	157	testing
29	24	spring-web	228	web	mysql2	394	db	mkdirp	152	utility
30	25	mysql	225	db	mocha	389	mock	commander	151	cli
31	26	spring-orm	218	db	therubyracer	357	util	grunt-copy	149	build
32	27	easymock	213	mocks	yard	353	build	ejs	148	templates
33	28	spring-aop	212	aop	rb-fsevent	351	util	tap	144	ui
34	29	spring-jdbc	209	db	rcov	349	testing	grunt-connect	132	http
35	30	spring-beans	202	util	pry	320	debugger	nodeunit	128	testing
36	31	commons-collections	201	util	shoulda	320	testing	redis	124	db
37	32	bukkit	196	game	sqlite3-ruby	319	db	grunt-nodeunit	122	testing
38	33	hibernate	191	db	launchy	300	util	mongoose	116	db
39	34	commons-lang3	188	util	will_paginate	300	util	grunt-qunit	111	testing
40	35	jstl	184	java	guard	290	util	stylus	101	language
41	36	spring-tx	182	db	activesupport	273	util	sinon	99	testing
42	37	hibernate-validator	182	db	rdoc	267	build	mime	99	utility
43	38	hibernate-core	181	db	redcarpet	259	parser	grunt-cli	87	cli
44	39	commons-dbcp	177	db	cucumber-rails	245	language	browserify	87	build
45	40	slf4j-simple	174	logging	turn	242	testing	mongodb	86	db
46	41	gson	174	parsing	rack-test	239	testing	debug	82	debugger
47	42	hadoop-core	168	db	ruby-debug	238	debugger	rimraf	80	utility
48	43	commons-httpclient	167	web	unicorn	234	web	node-uuid	80	utility
49	44	aspectjrt	159	aop	cucumber	233	language	lodash	80	func prog
50	45	h2	158	db	rack	230	web	semver	79	parser
51	46	hamcrest-library	158	matcher	bson_ext	225	parser	less	75	language
52	47	validation-api	156	java	webmock	224	mock	glob	75	utility
53	48	hamcrest-all	154	matcher	capistrano	214	util	expect.js	75	testing
54	49	jackson-core-asl	154	parsing	jruby-openssl	213	security	jsdom	74	ui
55	50	mail	149	java	minitest	204	testing	jasmine-node	70	web framework
56	51	maven-plugin-api	148	build	debugger	201	debugger	backbone	70	web framework
57	52	jsp-api	147	java	activerecord	200	db	q	67	async
58	53	cglib-nodep	146	mocks	faker	197	testing	requirejs	66	utility
59	54	commons-cli	144	parsing	haml-rails	195	templates	moment	66	parsing
60	55	hamcrest-core	143	matcher	ruby-debug19	193	debugger	grunt-cssmin	66	build
61	56	commons-fileupload	139	web	growl	193	util	handlebars	63	templates
62	57	guice	133	util	coveralls	191	build	winston	61	logging
63	58	spring-security-config	126	web	sass	191	web	marked	59	parser
64	59	hsqldb	123	db	spork	190	testing	grunt-jasmine	57	build
65	60	postgresql	121	db	cancan	188	security	grunt-coffee	53	build
66	61	spring-security-web	120	web	mongoid	185	db	expresso	51	testing
67	62	aspectjweaver	117	aop	simple_form	182	web	xml2js	46	parser
68	63	com.idega.core	117	web	bcrypt-ruby	174	security	grunt-karma	46	testing
69	64	json	112	parsing	paperclip	173	db	matchdep	45	matcher
70	65	spring-security-core	112	web	heroku	169	heroku	pkginfo	44	utility
71	66	cglib	111	mocks	omniauth	168	security	mysql	44	db
72	67	commons-beanutils	111	util	compass	165	web	grunt-compass	44	build
73	68	elasticsearch	110	db	kaminari	164	util	wrench	42	utility
74	69	spring-context-support	110	util	webrat	155	testing	nib	42	utility
75	70	jackson-databind	109	parsing	foreman	154	util	karma	42	testing
76	71	jta	103	java	bootstrap-sass	153	twitter	esprima	41	parser
77	72	hsqldb	101	db	i18n	150	util	shelljs	40	cli
78	73	jetty-server	100	web	httparty	149	web	grunt-compress	40	build
79	74	hibernate-jpa	98	db	newrelic_rpm	148	debugger	formidable	40	parser
80	75	commons-pool	96	util	factory_girl	142	util	tape	39	testing
81	76	gwt-user	95	web	twitter-bootstrap-rails	136	web	supertest	39	testing
82	77	javax.inject	93	java	yajl-ruby	131	parser	grunt-shell	39	build
83	78	logback-core	93	logging	timecop	131	testing	bcrypt	39	security
84	79	xstream	93	parsing	carrierwave	131	util	through	38	parser
85	80	junit-dep	93	testing	redis	128	db	qs	38	parser
86	81	spring-aspects	92	aop	rb-inotify	126	util	passport	37	security
87	82	xercesImpl	88	parsing	mysql	120	db	nopt	37	parser
88	83	jetty	88	web	awesome_print	119	logging	connect-redis	37	db
89	84	plexus-utils	87	util	compass-rails	117	web	ws	36	http
90	85	jersey-server	87	web	RedCloth	116	parser	phantomjs	35	webkit
91	86	mongo	84	db	guard-spork	116	util	node-static	35	http
92	87	.servlet-api	81	java	shoulda-matchers	114	testing	grunt-requirejs	35	build
93	88	jetty-servlet	80	web	fakeweb	113	mock	grunt-less	35	build
94	89	fest-assert	79	testing	quiet_assets	110	logging	docco	35	build
95	90	groovy-all	77	groovy	coffee-script	110	language	step	34	async
96	91	maven-project	76	build	builder	109	util	bower	34	build
97	92	persistence-api	76	java	rest-client	108	web	socket.io-client	33	http
98	93	.findbugs	76	testing	rdiscount	107	web	nodemailer	33	mail
99	94	json-simple	75	parsing	guard-bundler	103	util	minimatch	33	matcher
100	95	commons-configuration	75	util	dalli	98	util	grunt-regarde	33	utility