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Sjoerd Langkemper
@Sjord
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Open GitHub
🇳🇱 Haarlem, The Netherlands
Profile age: about 16 years
Updated 21 days ago
203 followers • 26 following
Contacts
https://www.sjoerdlangkemper.nl/
Profile Overview
Global
Netherlands
Beginner
Adept
Advanced
Expert
Master
Elite
Legend
Global Rank
Legend 1
Persona
Contributor
#46,309
#24,451
#51,908
Explore Ranks
Top 3 Languages By Stars
All Languages
Top 5 Repositories
jwtcrack
251
71
updated almost 2 years ago • age about 9 years
Python
100.0%
checkmate
121
15
2
updated over 1 year ago • age about 14 years
C
78.6%
Shell
19.7%
Roff
0.9%
M4
0.4%
Makefile
0.3%
jwtdemo
116
29
updated about 3 years ago • age about 9 years
PHP
100.0%
messpostage
97
18
4
updated about 6 years ago • age over 7 years
JavaScript
100.0%
growatt_api_client
70
30
updated over 1 year ago • age over 9 years
Python
100.0%
View all 40 repositories
Last Contributions
2025
semgrep-rules
3 PRs
+118
-8
HCL
999
477
civicrm-core
2 PRs
+2
-2
PHP
691
848
2024
framework
1 PR
+17
-2
PHP
34,189
11,606
880
content
1 PR
+0
-4
Markdown
9,783
22,874
browser-compat-data
1 PR
+0
-33
JSON
5,452
2,367
454
View all contributions
Latest Updates
16 Sep 2025
Followers Count:
201
203
02 Sep 2025
Followers Count:
200
201
19 Aug 2025
Followers Count:
201
200
04 Jan 2025
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