An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

Statistics
Registries: 99
Ecosystems: 42
Packages: 13,170,914
Versions: 150,285,106
Maintainers: 1,960,072
Downloads: 2,727,403,255,550
Namespaces: 1,817,479
Keywords: 1,792,000
npmjs.org

5,325,870 packages
63,921,821 versions
1,098,745 maintainers
343,895 namespaces
774,441 keywords
416,782,165,481 downloads

proxy.golang.org

2,033,887 packages
18,097,376 versions
765,091 namespaces
112,149 keywords

hub.docker.com

1,002,333 packages
14,111,512 versions
411,728 namespaces
1,697 keywords
472,859,256,809 downloads

pypi.org

783,721 packages
8,465,742 versions
329,397 maintainers
256,285 keywords
97,659,215,488 downloads

nuget.org

770,726 packages
12,878,623 versions
106,274 maintainers
156,203 keywords
857,238,410,704 downloads

repo1.maven.org

582,617 packages
16,482,824 versions
77,358 namespaces
35,327 keywords

packagist.org

481,047 packages
4,609,705 versions
135,678 maintainers
163,404 namespaces
145,003 keywords
167,021,847,518 downloads

crates.io

233,212 packages
1,951,453 versions
55,081 maintainers
55,714 keywords
220,110,235,437 downloads

rubygems.org

202,189 packages
1,738,950 versions
67,520 maintainers
18,293 keywords
234,779,986,600 downloads

gem.coop

187,037 packages
1,690,746 versions
66,510 maintainers
17,856 keywords
236,698,323,288 downloads

NixOS

unstable: 140,179 packages
24.11: 121,982 packages
24.05: 116,124 packages
23.11: 108,176 packages
23.05: 101,092 packages

cocoapods.org

102,307 packages
835,176 versions
46,612 maintainers
12,740 keywords

pub.dev

75,219 packages
698,930 versions
10,689 keywords

bower.io

70,212 packages
709,268 versions
28,934 keywords

metacpan.org

41,316 packages
349,220 versions
6,855 maintainers
3,351 keywords

alpinelinux

edge: 38,589 packages
v3.23: 27,514 packages
v3.22: 26,322 packages
v3.21: 25,393 packages
v3.20: 24,162 packages
more...

github actions

32,363 packages
355,720 versions
20,290 namespaces
7,949 keywords

ubuntu

24.04: 29,789 packages
22.04: 21,254 packages
20.04: 9,416 packages
24.10: 6,556 packages
23.04: 0 packages
more...

cran.r-project.org

27,191 packages
177,464 versions
14,827 maintainers
8,437 keywords
238,004,910 downloads

clojars.org

21,470 packages
162,737 versions
4,529 maintainers
10,727 namespaces
3,630 keywords
2,989,116,113 downloads

registry.terraform.io

21,165 packages
182,706 versions
7,129 namespaces
8 keywords
3,228,269,464 downloads

conda-forge.org

20,636 packages
155,125 versions
13,542 keywords

hex.pm

19,757 packages
141,388 versions
7,237 maintainers
6,477 keywords
14,411,213,666 downloads

hackage.haskell.org

18,860 packages
148,737 versions
3,851 maintainers
3,827 keywords
154,838,643 downloads

juliahub.com

13,246 packages
142,768 versions
7,618 keywords
1,431,843 downloads

swiftpackageindex.com

11,648 packages
192,930 versions
3,515 namespaces
8,271 keywords

open-vsx.org

9,893 packages
97,312 versions
5,740 maintainers
7,002 namespaces
20,784 keywords
345,946,017 downloads

spack.io

8,976 packages
42,500 versions
951 maintainers
3,787 keywords

formulae.brew.sh

8,968 packages
99,147 versions
6,529 keywords
21,156,286 downloads

pkg.adelielinux.org

7,855 packages
11,830 versions
22 maintainers
2 namespaces
291 keywords

forge.puppet.com

7,723 packages
54,834 versions
2,361 namespaces
4,219 keywords
2,468,299,956 downloads

deno.land

5,909 packages
73,620 versions
4,089 keywords

anaconda.org

4,655 packages
20,450 versions
3,112 keywords

repository.cloudera.com

3,626 packages
71,538 versions
1,470 namespaces
956 keywords

package.elm-lang.org

2,958 packages
16,606 versions
1,153 namespaces
1,044 keywords

vcpkg.io

2,882 packages
11,105 versions
2,737 keywords

pkgs.racket-lang.org

2,851 packages
0 versions
494 maintainers
1,271 keywords

artifacthub.io

2,715 packages
66,773 versions
1,083 namespaces
1,808 keywords

bioconductor.org

2,564 packages
15,246 versions
3,224 maintainers
1,111 keywords
395,537,327 downloads

carthage

2,087 packages
55,611 versions
1,098 namespaces
1,996 keywords

conan.io

1,897 packages
5,570 versions
2,858 keywords

registry.bazel.build

969 packages
6,522 versions

postmarketos

master: 589 packages
v21.03: 523 packages
v20.05: 374 packages
v25.12: 365 packages
v25.06: 342 packages
more...

elpa.gnu.org

495 packages
2,077 versions
246 maintainers
52 keywords

elpa.nongnu.org

273 packages
1,120 versions
187 maintainers
46 keywords

debian

13: 266 packages
12: 0 packages
11: 0 packages
10: 0 packages

repository.apache.org-releases

250 packages
7,383 versions
66 namespaces
73 keywords

repository.apache.org-snapshots

27 packages
1,596 versions
5 namespaces
10 keywords

repository.jboss.org

129 packages
2,686 versions
38 namespaces
4 keywords

artifacts.alfresco.com

25 packages
907 versions
8 namespaces

build.shibboleth.net

13 packages
452 versions
2 namespaces

nexus.gael.cloud

0 packages
0 versions

repo.jenkins-ci.org

0 packages
0 versions