data-science

Open Data Science Conference
Re-Work
QCon.ai
AnacondaCON
The Data Science Conference

open-source

IndiaOS 2020 - An Open Source Conference

programming-languages/javascript

JSConf - Conferences for the JavaScript Community

programming-languages/processing

Processing Day India

programming-languages/python

List of Upcoming Python Conferences Worldwide
Official PyCon Website
List of Python Conferences & Workshops Worldwide

programming-languages/r

R: Conferences

programming-languages/ruby

RubyConf India
RubyConf
Deccan RubyConf, India