The following tools are often useful when you work with your project and Master's theses:
MATLAB and friends
During the RAMS study, it is important to be familiar with a mathematical program, such as MAPLE and/or MATLAB - or one of the free MATLAB clones:
Note-taking
When you write a scientific report, you will usually start by reading a lot of literature, taking notes, and organizing these notes into a structure of chapters and sections. This can obviously be done in a word processor (e.g., LaTeX, LibreOffice, AbiWord, or Microsoft Word) , but it is often more efficient to use a dedicated note-taking tool. One such tool is Evernote. This tool has a lot of nice features and is available for many types of computers and mobile phones.
There are many alternatives to Evernote, but this program meets my requirements.
References
Zotero is a plugin to most browsers that can be used to record and manage references. When you search for literature in, for example, Amazon, ScienceDirect, or Google Scholar, and find something of interest, you just click the Zotero icon - and then the reference is properly recorded. You may afterwards edit and add notes to the references, and group them into sub-libraries. If you are using LaTeX, you can easily export the Zotero references in bib-format to be used with BibTeX - a very efficient tool!