I have done testing for the website as well as many Android applications.
For automation code, I have used Python mainly and javascript.
Automation testing - Selenium Webdriver, Selenium IDE, Robot framework,
Manual testing - Bugzilla
Project Management tools - Gitlab, Github, Trello, Jira
Frontend technologies for testing - Python, JavaScript
API testing - Postman, Rest API
Security testing - Burp Suite, Wapiti