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Use this tool to analyse and interpret texts for the purposes of social scientific research. It provides useful support when you’re developing and testing theoretical inferences. Download requires a valid email address.

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Circuit simulator with a graphical user-interface. Illustrates how analogue and digital circuits work, and is mainly used in high-frequency circuit design to create simulation logs used for analysis. Fast and secure download from The H

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2D/3D CAD software for automating design processes in heterogeneous system environments. Creates 3D models and 2D drawings, offers flexible editing, colour images can be uploaded, and DXF and DWG data can be imported. An expanded commercial version is also available. Fast and secure download from The H

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Live DVD Linux operating system based on Ubuntu with an emphasis on CAE (Computer Aided Engineering). Contains numerous applications for complex mathematical and physics calculations and 3D visualisation, based on the CAE applications Salomé and Code_Aster.

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CAD application for design studios, design models and detailed designs. Includes a drag-and-drop element system and functions for modelling volume, surface and free-form surfaces. Supports 3DS, AVI, BMP, DWG, DXF, GIF and VRML formats.

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Collection of mini applications and charts for electronics enthusiasts.

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Design software for creating printed circuit boards. Supports PCB layout, board and FPGA level design, signal integrity, 3D and analysis. Includes the "Constraint Browser" for managing required design rules in tables and including them in the development.

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Development environment for scientific applications in the area of numerical mathematics.

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Extracts data such as graphics and curves scanned in, for example from scientific publications, for further processing.

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Mapper for cataloguing knowledge and generating and storing ideas as mind maps. Fast and secure download from The H

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Algebra system with its own programming language.

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Displays satellite photos of the Earth’s surface in high quality. Requires a fast internet connection. Also available as a Pro version (not free) for use by companies. Also available also as an app for mobile devices.

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Professional software for statistical analysis of data. Uses common statistical processes and displays the results in graphical form.

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This tool gives you independent control over the frequencies, phases and volumes of the left-and right-hand audio channels. Includes options for storing the measured data points for statistical analysis.

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Helps with planning, designing and analysing electrical circuits, providing formulae and results.

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Software for calculating mathematical results in the areas of algebra, calculus, combinatorics, numerical mathematics, statistics, cryptography, linear algebra and others. Runs as web interface or command line interpreter. Includes interfaces to other maths programs and interactive plots. Support for Python allows programming. Fast and secure download from The H

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CAD program for creating designs from building blocks. Offers more than 1,000 types of building block.

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Generates and edits complex mathematical formulae which can be inserted into word processing documents and presentations such as TeX, LaTeX or MathML documents.

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2D CAD program for expanding AutoCAD, SketchUp or AutoCAD LT. Offers extended editing functions based on handles, with direct access to a wide range of tools, such as those used for special lines, arcs, circles, Bezier curves and ellipses with a fixed ratio. Can open and store all DWG, DXF and DWF files from AutoCAD R14 (1997) to 2009. Pro version also available.

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Virtual globe; uses free geo-data from OpenStreetMap (OSM) and the terrain elevation data from SRTM, an open standard-based 3D geo data infrastructure for Germany. Current data only for Germany and a Buddhist site in China. Fast and secure download from The H

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