Description: PDFill is a free PDF editing software that allows users to fill out, edit, merge, split, rearrange, encrypt, decrypt, print and save PDF documents. It has basic PDF functionality for free.
Type: software
Pricing: Freemium
Description: python(x,y) is an open-source mathematical plotting and data visualization library for the Python programming language. It provides a simple interface for creating 2D plots, histograms, power spectra, bar charts, errorcharts, contour plots, etc.
Type: software
Pricing: Open Source