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

Statistics
Registries: 89
Ecosystems: 40
Packages: 13,078,338
Versions: 149,267,228
Maintainers: 1,960,059
Downloads: 2,682,366,899,294
Namespaces: 1,812,710
Keywords: 1,787,258
npmjs.org

5,325,144 packages
63,799,825 versions
1,098,739 maintainers
343,295 namespaces
773,741 keywords
392,845,589,790 downloads

proxy.golang.org

2,033,872 packages
18,014,219 versions
763,140 namespaces
112,100 keywords

hub.docker.com

1,002,333 packages
14,093,106 versions
411,728 namespaces
1,697 keywords
472,549,086,590 downloads

pypi.org

783,663 packages
8,422,156 versions
329,396 maintainers
255,286 keywords
90,964,456,501 downloads

nuget.org

770,402 packages
12,803,173 versions
106,273 maintainers
155,983 keywords
849,733,646,057 downloads

repo1.maven.org

582,207 packages
16,423,549 versions
77,099 namespaces
35,324 keywords

packagist.org

481,047 packages
4,604,316 versions
135,678 maintainers
163,321 namespaces
144,929 keywords
166,300,741,345 downloads

crates.io

232,712 packages
1,937,421 versions
55,080 maintainers
55,584 keywords
216,870,466,134 downloads

rubygems.org

202,112 packages
1,736,340 versions
67,520 maintainers
18,291 keywords
233,632,446,334 downloads

gem.coop

186,956 packages
1,687,233 versions
66,510 maintainers
17,851 keywords
235,312,307,668 downloads

NixOS

unstable: 132,724 packages
24.11: 121,534 packages
23.11: 107,868 packages
24.05: 101,859 packages
23.05: 101,092 packages

cocoapods.org

102,298 packages
832,947 versions
46,612 maintainers
12,740 keywords

pub.dev

75,110 packages
695,012 versions
10,685 keywords

bower.io

70,212 packages
708,486 versions
28,929 keywords

metacpan.org

41,316 packages
349,083 versions
6,855 maintainers
3,351 keywords

alpinelinux

edge: 38,587 packages
v3.23: 27,499 packages
v3.22: 26,322 packages
v3.21: 25,393 packages
v3.20: 24,162 packages
more...

github actions

32,361 packages
355,290 versions
20,286 namespaces
7,949 keywords

cran.r-project.org

27,149 packages
176,837 versions
14,827 maintainers
8,459 keywords
228,953,148 downloads

clojars.org

21,466 packages
162,489 versions
4,529 maintainers
10,721 namespaces
3,630 keywords
2,974,192,459 downloads

registry.terraform.io

21,165 packages
182,698 versions
7,129 namespaces
3,226,172,541 downloads

conda-forge.org

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

hex.pm

19,640 packages
140,557 versions
7,237 maintainers
6,475 keywords
14,378,048,837 downloads

hackage.haskell.org

18,857 packages
148,592 versions
3,851 maintainers
3,825 keywords
154,694,560 downloads

juliahub.com

13,220 packages
142,090 versions
7,611 keywords
1,605,760 downloads

swiftpackageindex.com

11,648 packages
191,405 versions
3,262 namespaces
8,254 keywords

open-vsx.org

9,813 packages
94,169 versions
5,740 maintainers
6,800 namespaces
20,436 keywords
315,982,576 downloads

spack.io

8,976 packages
42,421 versions
951 maintainers
3,787 keywords

formulae.brew.sh

8,966 packages
98,210 versions
6,531 keywords
19,098,226 downloads

pkg.adelielinux.org

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

forge.puppet.com

7,723 packages
54,800 versions
2,361 namespaces
4,219 keywords
2,467,884,928 downloads

deno.land

5,909 packages
73,397 versions
4,089 keywords

anaconda.org

4,644 packages
20,175 versions
3,112 keywords

repository.cloudera.com

3,626 packages
71,397 versions
1,470 namespaces
955 keywords

package.elm-lang.org

2,954 packages
16,579 versions
1,153 namespaces
1,044 keywords

vcpkg.io

2,882 packages
10,897 versions
2,737 keywords

pkgs.racket-lang.org

2,849 packages
0 versions
494 maintainers
1,281 keywords

bioconductor.org

2,564 packages
15,173 versions
3,224 maintainers
1,111 keywords
391,525,840 downloads

artifacthub.io

2,526 packages
versions

carthage

2,087 packages
55,488 versions
779 namespaces
1,996 keywords

conan.io

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

registry.bazel.build

967 packages
6,500 versions

postmarketos

master: 583 packages
v21.03: 523 packages
v20.05: 374 packages
v25.12: 364 packages
v25.06: 341 packages
more...

elpa.gnu.org

494 packages
2,059 versions
246 maintainers
52 keywords

elpa.nongnu.org

273 packages
1,115 versions
187 maintainers
46 keywords

repository.apache.org-releases

250 packages
7,353 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
441 versions
2 namespaces

nexus.gael.cloud

0 packages
0 versions

repo.jenkins-ci.org

0 packages
0 versions