Based on last 7 days (max available using Twitter API ...)

By account

Account         Client              Count
9GAGGifs        9GAG Gifs           223
9GAGTweets      9GAG Tweets	        626
Animal_R_Us     Twitter for iPhone	50
Animalsandfools Twitter for iPhone	14
ArtTimelapse    Buffer	            2       (https://buffer.com/ sharing app)
AwardsDarwin    Twitter for iPhone	116
BBAnimals       Buffer	            336

BabyAnimaI      Twitter Web Client	7
BabyAnimaI      Twitter for iPhone	2

BabyAnimalPics  Buffer	            105
BabyAnimalPics  Twitter for iPhone	20
BabyAnimalPics  Twitter Web Client	1

BestGalaxyPics  Twitter Web Client	137
BrokenAnimaIs   Twitter for iPhone	4
CUTEST_ANlMALS  Twitter Web Client	284
CamsRussian     Twitter for iPhone	20
CaughtCctv      Twitter for iPhone	58
Copvids911      Twitter for iPhone	24
Crashingtv      Twitter for iPhone	63
CrazyGloble     Twitter for iPhone	55
CrazyinRussia   Twitter for iPhone	90
Crazyinnasia    Twitter for iPhone	51
Crazzyintheusa  Twitter for iPhone	46

CuteEmergemcy   Twitter for iPhone	35
CuteEmergemcy   Twitter Web Client	4

CuteEmergency   Buffer	            72
CuteEmergency   Twitter Web Client	7
CuteEmergency   Twitter for iPhone	3
CuteEmergency   Media Studio	      1

DashVids        Twitter for iPhone	49

EmrgencyKittens Buffer	            42
EmrgencyKittens Twitter for iPhone	3

FailsWork       Twitter for iPhone	78
GamepIay        Buffer	            49

Globe_Pics      Buffer	            37
Globe_Pics      TweetDeck	          1
Globe_Pics      Twitter for iPhone	1
Globe_Pics      Twitter Web Client	1

HurtHad2        Twitter for iPhone	46
Iearnsomething  nothing from API
Motorwaymayhem_ Twitter for Android	22
Parknooo        Twitter for iPhone	8
Peepsarejerks   Twitter for iPhone	15
RespectfulMemes Twitter for iPhone	59
SignsFun        Twitter for iPhone	27

SoVeryAwkward   Buffer	            26
SoVeryAwkward   TweetDeck	          1

SpaceCatPics    nothing from API
StoryInPicture  Twitter for Android	33

Strange_Animals Post with Klout	    23  (https://klout.com/home)
Strange_Animals Twitter for iPhone	7
Strange_Animals Buffer	            2

TimeIapsevids   Buffer	            20

WholesomeMeme   Buffer	112
WholesomeMeme   Twitter for iPhone	3

WorldAndScience Hootsuite	          221
WorldAndScience Twitter for Android	7
WorldAndScience Twitter Web Client	5

YouHadOneJ0B    TweetDeck	          229
YouHadOneJ0B    Twitter Web Client	30

Youmuppet_      Twitter for Android	23

_mrlego_        Twitter for Android	90
_youhadonejob1  Twitter for iPhone	113
catclick        Twitter Web Client	61
cursedimages    nothing from API
cursedimages_2  Twitter for iPhone	84

cutestpageever  Hootsuite	          85
cutestpageever  FPTraffic	          65    (http://fptraffic.com/ monetization)
cutestpageever  Twitter for Android	25
cutestpageever  Buffer	            12
cutestpageever  IFTTT	              4
cutestpageever  Twitter for iPad	  3
cutestpageever  Twitter Web Client	1

funsportsgifs   Twitter for iPhone	36
giftwou         Twitter for iPhone	18
guystufff       Twitter for iPhone	29
incredibleviews Twitter for Android	6
landpsychology  Postcron App	      1083    (https://postcron.com/fr/ programming tweets)

planetepics     Buffer	            263
planetepics     Twitter for Android	1
planetepics     Twitter Web Client	1

sfiGesreveR     Twitter for iPhone	18
wildwildweather Twitter for iPhone	7

By sources

Twitter for iPhone	1252
Postcron App	      1083
Buffer	            1078
9GAG Tweets	        626
Twitter Web Client	539
Hootsuite	          306
TweetDeck	          231
9GAG Gifs	          223
Twitter for Android	207
FPTraffic	          65
Post with Klout	    23
IFTTT	              4
Twitter for iPad	  3
Media Studio	      1