apache / poi - Contributors

Zoomable circles (number of contributors per file): 30 days | 90 days | 6 months | past year | all time

Files with only one contributor are shown as grey.

Contributors

Recent Contributors (5)

Committed in past 6 months (a rookie = the first commit in past year)

Past 30 days (2):

fanningpj@apache.org

centic@apache.org

Past 31 to 90 days (2):

sayi@apache.org

fanningpj@unknown

Past 91 to 180 days (1):

axh@apache.org

Historical Contributors (38)

Last contributors more than 6 months ago

nick@apache.org

kiwiwings@apache.org

onealj@apache.org

yegor@apache.org

josh@apache.org

sergey@apache.org

acoliver@apache.org

glens@apache.org

klute@apache.org

avik@apache.org

nicolaken@apache.org

tallison@apache.org

sackley@apache.org

gwoolsey@apache.org

abearez@apache.org

maxcom@apache.org

tetsuya@unknown

dnorth@apache.org

jheight@apache.org

mariusvolkhart@apache.org

ugo@apache.org

berlog@apache.org

cedricwalter@apache.org

amol@apache.org

dmui@apache.org

paolo@apache.org

slaubach@apache.org

jmarkmurphy@apache.org

gallon@apache.org

uschindler@apache.org

mjohnson@apache.org

markt@apache.org

virtuald@apache.org

msb@apache.org

wave@apache.org

bayard@apache.org

sullis@apache.org

jsvede@apache.org

Contributors Matrix (Per Month)

	Commits (3m)	Commit Days	2	2	2	2	3	2	3	1	1	1	2	2	1	2	2	3	2	2	2	3	3	2	1	2	2
fanningpj@apache.org	85	870
centic@apache.org	11	581			-	-				-	-	-			-										-
fanningpj@unknown	1	1	-	-		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
sayi@apache.org	1	13	-	-	-		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
axh@apache.org	-	11	-	-	-	-		-	-	-	-	-	-	-	-	-	-		-	-	-	-	-	-	-	-	-
tallison@apache.org	-	89	-	-	-	-	-	-		-	-	-	-	-	-	-	-	-	-	-	-			-	-	-	-
mariusvolkhart@apache.org	-	18	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
kiwiwings@apache.org	-	684	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
yegor@apache.org	-	509	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
nick@apache.org	-	769	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
abearez@apache.org	-	42	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
gwoolsey@apache.org	-	44	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
gallon@apache.org	-	6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
jmarkmurphy@apache.org	-	17	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
onealj@apache.org	-	155	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
virtuald@apache.org	-	4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
dnorth@apache.org	-	31	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
uschindler@apache.org	-	9	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
cedricwalter@apache.org	-	12	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
berlog@apache.org	-	30	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
sergey@apache.org	-	59	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
maxcom@apache.org	-	45	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
wave@apache.org	-	6	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
jsvede@apache.org	-	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
msb@apache.org	-	8	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
josh@apache.org	-	233	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
ugo@apache.org	-	18	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
paolo@apache.org	-	13	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
klute@apache.org	-	100	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
acoliver@apache.org	-	123	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
markt@apache.org	-	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
avik@apache.org	-	79	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
bayard@apache.org	-	5	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
amol@apache.org	-	12	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
jheight@apache.org	-	32	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
sullis@apache.org	-	4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
glens@apache.org	-	133	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
slaubach@apache.org	-	18	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
sackley@apache.org	-	47	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
tetsuya@unknown	-	23	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
dmui@apache.org	-	16	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
nicolaken@apache.org	-	47	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
mjohnson@apache.org	-	10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Bots Matrix (Per Month)

Commits
(3m)

Commit
Days

-

2 contributors (44 commits):

#	Contributor	First Commit	Latest Commit	Commits Count	File Updates (per extension)
1.	fanningpj@apache.org	2017-06-23	2025-05-06	33 (75%)	java (51), gradle (12), xml (5), properties (1), md (1)
2.	centic@apache.org	2013-06-17	2025-05-06	11 (25%)	java (20), gradle (2), xml (1), groovy (1)

Contributor Dependencies

A contributor dependency is detected if two contributors have changed the same files in the past 30 days.

Contributor Dependencies via Shared Files

- show contributor dependencies 2D graph
- open 2D force graph
- open 3D force graph
- open 2D force graph (including all files)
- open 2D force graph (including only shared files)
- open 3D force graph (including all files)
- open 3D force graph (including only shared files)

	Contributor 1	Contributor 2	# shared files
1.	centic@apache.org	fanningpj@apache.org	4 shared files

Most Connected Contributors

	Contributor	# connections	# commits
1.	fanningpj@apache.org	1	33
2.	centic@apache.org	1	11

C-median: 1.0

A half of the contributors has more than 1.0 connections, and a half has less than this number.

C-mean: 1.0

An average number of connections a contributor has with other contributors.

C-index: 1.0

There are 1.0 contributors with 1.0 or more connections.

4 contributors (98 commits):

#	Contributor	First Commit	Latest Commit	Commits Count	File Updates (per extension)
1.	fanningpj@apache.org	2017-06-23	2025-05-06	85 (86%)	java (116), gradle (29), xml (16), properties (3), md (1)
2.	centic@apache.org	2013-06-17	2025-05-06	11 (11%)	java (20), gradle (2), xml (1), groovy (1)
3.	sayi@apache.org	2020-08-09	2025-02-25	1 (1%)	java (2)
4.	fanningpj@unknown	2025-03-20	2025-03-20	1 (1%)	java (1)

Contributor Dependencies

A contributor dependency is detected if two contributors have changed the same files in the past 90 days.

Contributor Dependencies via Shared Files

- show contributor dependencies 2D graph
- open 2D force graph
- open 3D force graph
- open 2D force graph (including all files)
- open 2D force graph (including only shared files)
- open 3D force graph (including all files)
- open 3D force graph (including only shared files)

	Contributor 1	Contributor 2	# shared files
1.	centic@apache.org	fanningpj@apache.org	5 shared files
2.	fanningpj@apache.org	fanningpj@unknown	1 shared file
3.	fanningpj@apache.org	sayi@apache.org	1 shared file

Most Connected Contributors

	Contributor	# connections	# commits
1.	fanningpj@apache.org	3	85
2.	centic@apache.org	1	11
3.	sayi@apache.org	1	1
4.	fanningpj@unknown	1	1

C-median: 1.0

A half of the contributors has more than 1.0 connections, and a half has less than this number.

C-mean: 1.5

An average number of connections a contributor has with other contributors.

C-index: 1.0

There are 1.0 contributors with 1.0 or more connections.

5 contributors (193 commits):

#	Contributor	First Commit	Latest Commit	Commits Count
1.	fanningpj@apache.org	2017-06-23	2025-05-06	137 (70%)
2.	centic@apache.org	2013-06-17	2025-05-06	52 (26%)
3.	axh@apache.org	2019-11-12	2025-01-11	2 (1%)
4.	sayi@apache.org	2020-08-09	2025-02-25	1 (<1%)
5.	fanningpj@unknown	2025-03-20	2025-03-20	1 (<1%)

Contributor Dependencies

A contributor dependency is detected if two contributors have changed the same files in the past 180 days.

Contributor Dependencies via Shared Files

- show contributor dependencies 2D graph
- open 2D force graph
- open 3D force graph
- open 2D force graph (including all files)
- open 2D force graph (including only shared files)
- open 3D force graph (including all files)
- open 3D force graph (including only shared files)

	Contributor 1	Contributor 2	# shared files
1.	centic@apache.org	fanningpj@apache.org	35 shared files
2.	fanningpj@apache.org	sayi@apache.org	1 shared file
3.	axh@apache.org	fanningpj@apache.org	1 shared file
4.	fanningpj@apache.org	fanningpj@unknown	1 shared file

Most Connected Contributors

	Contributor	# connections	# commits
1.	fanningpj@apache.org	4	137
2.	centic@apache.org	1	52
3.	axh@apache.org	1	2
4.	sayi@apache.org	1	1
5.	fanningpj@unknown	1	1

C-median: 1.0

A half of the contributors has more than 1.0 connections, and a half has less than this number.

C-mean: 1.6

An average number of connections a contributor has with other contributors.

C-index: 1.0

There are 1.0 contributors with 1.0 or more connections.

6 contributors (363 commits):

#	Contributor	First Commit	Latest Commit	Commits Count
1.	fanningpj@apache.org	2017-06-23	2025-05-06	278 (76%)
2.	centic@apache.org	2013-06-17	2025-05-06	80 (22%)
3.	tallison@apache.org	2013-07-29	2024-11-06	1 (<1%)
4.	axh@apache.org	2019-11-12	2025-01-11	2 (<1%)
5.	sayi@apache.org	2020-08-09	2025-02-25	1 (<1%)
6.	fanningpj@unknown	2025-03-20	2025-03-20	1 (<1%)

Contributor Dependencies

A contributor dependency is detected if two contributors have changed the same files in the past 365 days.

Contributor Dependencies via Shared Files

- show contributor dependencies 2D graph
- open 2D force graph
- open 3D force graph
- open 2D force graph (including all files)
- open 2D force graph (including only shared files)
- open 3D force graph (including all files)
- open 3D force graph (including only shared files)

	Contributor 1	Contributor 2	# shared files
1.	centic@apache.org	fanningpj@apache.org	56 shared files
2.	fanningpj@apache.org	sayi@apache.org	2 shared files
3.	centic@apache.org	tallison@apache.org	1 shared file
4.	axh@apache.org	fanningpj@apache.org	1 shared file
5.	fanningpj@apache.org	tallison@apache.org	1 shared file
6.	fanningpj@apache.org	fanningpj@unknown	1 shared file

Most Connected Contributors

	Contributor	# connections	# commits
1.	fanningpj@apache.org	5	278
2.	centic@apache.org	2	80
3.	tallison@apache.org	2	1
4.	axh@apache.org	1	2
5.	sayi@apache.org	1	1
6.	fanningpj@unknown	1	1

C-median: 1.5

A half of the contributors has more than 1.5 connections, and a half has less than this number.

C-mean: 2.0

An average number of connections a contributor has with other contributors.

C-index: 2.0

There are 2.0 contributors with 2.0 or more connections.

Contributors' details...