When you need to see what multiple compound exponential sinusoidal waves look like, turn to GraphCalc. Haven't we all at some point wanted to see what "sin(x)^2-3*ln(tan(x*pi))" looked like, and the Windows calculator just wasn't up to the task?

GraphCalc - Graphing Calculator

GraphCalc is an all-in-one solution to everything from everyday arithmetic to statistical analysis, from betas to Booleans, from cubes to calculus, from decimals to derivatives.

Reference management software, citation management software or personal bibliographic management software is software for scholars and authors to use for recording and utilising bibliographic citations (references). Once a citation has been recorded, it can be used time and again in generating bibliographies, such as lists of references in scholarly books, articles and essays. The development of reference management packages has been driven by the rapid expansion of scientific literature.

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.