OmniCounter is a Fully Functional Calculator that supports basic, scientific, trigonometry, algebra, calculus, combinatorics, datetime, economics, geometry, matrix, vector, number theory, statistics, and so on.
DemoIt's a useful pypi package that aims to export conda env dependencies and pip requirements to ONE yml file.
DemoIt's a simple but powerful application to remove text and/or image watermarks in PDF files and output PDF and/or DOCX files.
DemoArxiv Accelerator is a Chrome Extension that can be used to accelerate to download arxiv pdf in China!
Demo