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

Statistics
Registries: 78
Ecosystems: 35
Packages: 12,204,830
Versions: 143,027,438
Maintainers: 1,920,508
Downloads: 2,568,023,196,274
Namespaces: 1,770,143
Keywords: 1,736,503
npmjs.org

5,218,397 packages
61,010,481 versions
1,077,000 maintainers
326,282 namespaces
749,603 keywords
391,920,638,168 downloads

proxy.golang.org

1,990,304 packages
17,295,277 versions
750,405 namespaces
111,536 keywords

hub.docker.com

1,002,299 packages
13,920,668 versions
411,710 namespaces
1,697 keywords
468,978,222,693 downloads

nuget.org

754,245 packages
12,292,020 versions
104,582 maintainers
154,843 keywords
797,777,285,065 downloads

pypi.org

751,446 packages
8,129,422 versions
319,184 maintainers
247,375 keywords
87,997,386,002 downloads

repo1.maven.org

564,740 packages
15,481,741 versions
74,897 namespaces
35,062 keywords

packagist.org

473,283 packages
4,498,013 versions
134,267 maintainers
160,933 namespaces
142,764 keywords
159,265,640,216 downloads

crates.io

215,294 packages
1,787,046 versions
52,811 maintainers
53,342 keywords
187,607,234,947 downloads

rubygems.org

200,818 packages
1,716,941 versions
67,248 maintainers
18,205 keywords
226,262,521,427 downloads

gem.coop

185,667 packages
1,655,224 versions
66,242 maintainers
17,062 keywords
227,724,973,398 downloads

cocoapods.org

101,706 packages
818,590 versions
46,441 maintainers
12,726 keywords

pub.dev

71,781 packages
667,995 versions
10,407 keywords

bower.io

70,212 packages
706,877 versions
28,982 keywords

metacpan.org

41,211 packages
347,656 versions
6,845 maintainers
3,329 keywords

alpinelinux

edge: 37,794 packages
v3.22: 26,317 packages
v3.21: 25,393 packages
v3.20: 24,162 packages
v3.19: 23,031 packages
more...

github actions

32,291 packages
352,617 versions
20,256 namespaces
4,229 keywords

cran.r-project.org

26,679 packages
173,839 versions
14,640 maintainers
8,488 keywords
241,216,385 downloads

clojars.org

21,212 packages
159,978 versions
4,512 maintainers
10,689 namespaces
3,628 keywords
2,870,267,528 downloads

conda-forge.org

20,636 packages
155,123 versions
13,538 keywords

hex.pm

18,979 packages
136,375 versions
7,114 maintainers
6,333 keywords
14,173,398,543 downloads

hackage.haskell.org

18,752 packages
147,507 versions
3,834 maintainers
3,819 keywords
153,977,388 downloads

juliahub.com

12,936 packages
137,758 versions
7,535 keywords
8,934,324 downloads

swiftpackageindex.com

11,030 packages
182,674 versions
3,718 namespaces
8,007 keywords

spack.io

8,901 packages
41,796 versions
942 maintainers
3,733 keywords

formulae.brew.sh

8,787 packages
92,228 versions
6,425 keywords
20,000,053 downloads

pkg.adelielinux.org

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

forge.puppet.com

7,708 packages
54,556 versions
2,356 namespaces
4,208 keywords
2,465,532,684 downloads

open-vsx.org

7,581 packages
75,891 versions
4,611 maintainers
5,149 namespaces
16,681 keywords
181,753,169 downloads

deno.land

5,909 packages
72,374 versions
4,085 keywords

anaconda.org

4,522 packages
19,195 versions
3,044 keywords

repository.cloudera.com

3,626 packages
67,746 versions
1,352 namespaces
948 keywords

package.elm-lang.org

2,945 packages
16,492 versions
1,150 namespaces
1,029 keywords

pkgs.racket-lang.org

2,821 packages
0 versions
490 maintainers
1,295 keywords

vcpkg.io

2,820 packages
10,014 versions
2,747 keywords

bioconductor.org

2,564 packages
12,974 versions
3,213 maintainers
1,093 keywords
374,214,284 downloads

carthage

2,083 packages
55,189 versions
1,082 namespaces
1,999 keywords

postmarketos

master: 547 packages
v21.03: 523 packages
v20.05: 374 packages
v25.06: 341 packages
v24.06: 331 packages
more...

elpa.gnu.org

493 packages
1,948 versions
245 maintainers
52 keywords

elpa.nongnu.org

265 packages
1,076 versions
184 maintainers
46 keywords

repository.apache.org-releases

249 packages
7,277 versions
66 namespaces
73 keywords

repository.apache.org-snapshots

27 packages
488 versions
5 namespaces
10 keywords

repository.jboss.org

129 packages
2,677 versions
38 namespaces
3 keywords

artifacts.alfresco.com

25 packages
907 versions
8 namespaces

build.shibboleth.net

13 packages
441 versions
2 namespaces

repo.jenkins-ci.org

0 packages
0 versions

nexus.gael.cloud

0 packages
0 versions