Graph is an open source application used to draw mathematical graphs in a coordinate system. Anyone who wants to draw graphs of functions will find this program useful. The program makes it very easy to visualize a function and paste it into another program. It is also possible to do some mathematical calculations on the functions.

Draw functions

Graph can draw normal functions, parameter functions, and polar functions. You can use a lot of built-in functions, e.g. sin, cos, log, etc. You may specify color, width and line style of the graphs, and the graphs may me limited to an interval. It is also possible to show a circle at the ends indicating open or closed interval.

Interact with other programs

You can save the coordinate system with graphs as an image on disk either as a bitmap (bmp), Potable Network Graphics (png) or metafile (emf). You may also copy the coordinate system into another program, e.g. Microsoft Word, either as a normal image or as an OLE object, which may be edited later by double clicking on it.

A lot of options

While still easy to use Graph has a lot of customization possibilities, e.g. fonts, colors, axes style, grids, etc. The axes, which may by normal or logarithmic, can be placed either by entering specific values, or by moving or zooming with the mouse.

Evaluate

Given an x-coordinate Graph will calculate the function value and the first two derivatives for any given function. Alternatively the function may be traced with the mouse. Graph can also fill a table with evaluated function coordinates in a user specified range. Data from the table can easily be copied into another program, e.g. Excel.

Calculate

Graph can help you calculate the area under a function in a given interval and the distance along the curve between two points on the function. The program can also show the first derivative of a function, and create tangents and normal lines to a function at given coordinates.

Point series and trendlines

You can create series of points with different markers, colors and size. Data for a point series can be imported from other programs, e.g. Microsoft Excel. It is possible to create a line of best fit from the data in a point series, either from one of the built-in models or from a user specified model.

Shadings and labels

Graph can insert shadings used to mark an area related to a function. Shadings may be created with different styles and colors in a user specified interval. In addition to the optional legend used to describe each function, a label may be added anywhere in the system. A label can contain text with different fonts, images and objects created in other programs.

Download Graph 4.2 in Softonic

AddUp is a free calculator able to process non-trivial arithmetic expressions such as:

-(((1 + 2) * 3)^4)% + 56e-7 / 8

Unlike regular desk calculators where the numbers and operators you provide disappear when you enter the next one, AddUp retains all this information for review in an editable work area. Expressions can be edited and re-calculated if necessary. Results can be saved to a text file.

Download AddUp 2 2006-02-12 in Softonic

Scratch broadens the range of what you can design and create on the computer, making it easier to express your creativity. With Scratch, you can create characters that dance, sing and interact with one another, create images that whirl, spin, and animate in response to movements of the mouse, or integrate images with sound effects and music clips.

Scratch is a perfect tool for kids to learn the basics of computer programming, providing them with a tool that helps them explore their creative side by designing interactive birthday cards, short animated videoclips or interactive reports for school.

At the core of Scratch is a graphical programming language that lets you control the actions and interactions among different media. Coding in Scratch is much easier than in traditional programming languages: to create a script, you simply snap together graphical blocks, much like LEGO bricks or puzzle pieces.

Once you’ve created a Scratch project, you can share it on the Scratch website, the same way you might share videos on YouTube or photos on Flickr. Or you can embed your Scratch project in any other webpage – for example, embedding an interactive Scratch animation on your MySpace or Facebook homepage.

Download Scratch 1.2 in Softonic

Chances are that not very many people have heard of Stellarium although it is very similar to one of the most popular pieces of software available today – Google Earth. While Google’s software allows you to focus on the earth from a starting point in outer space, Stellarium reverses your perspective and places you at any point on the earth’s surface, staring up and out into deep space.

An interesting feature is that as time passes, the virtual star system will evolve, with the sun setting and the various constellations becoming more prominent in the dark night sky. You have a selection of visual effects that you can switch on or off such as the atmosphere, or trace lines for the star systems. Impressive stuff for a few minutes, but once you’ve got the general gist of what the software entails, you’ll quickly tire of zooming out to distant stars and watching as they slowly move across the screen.

While Google Earth brings you detailed photos of our planet’s surface, Stellarium can only achieve a much lower resolution representation of the solar system’s planets, without mentioning the fact that stars are limited to simple white dots zipping through the sky. With over 120,000 stars accurately plotted out in this virtual planetarium, it’s obvious that a lot of work has gone in to its creation. However, that excruciating level of detail is likely only to appeal to the real die-hard star gazers.

The idea behind Stellarium is a good one in theory, but when it comes down to it most people will see it as little more than a smart, interactive screensaver. That said, if you have an affinity for astronomy, would like to learn the constellations, or simply enjoy watching beautiful sunsets, then this is for you.

Download Stellarium 0.9.0 in Softonic

Click MusicalKEYS will change your computer into a virtual music lab. With 128 musical instruments, you can play the best music of your choice. You can also save your favorites in the MIDI file format for free using the MIDI Converter utility.

Click MusicalKEYS can be used as an accompaniment just like electronic keyboards and it is also ideal for people who want to learn how to play tunes in musical instruments. You can also download tunes from your friends and send your favorites to them, so with Click MusicalKEYS, it is very easy and fun to use the computer as a musical instrument.

You don't need any experience about music staves and sheets. Click MusicalKEYS will do all the work.

Download Click MusicalKEYS 3.0.214 in Softonic

Celestia is a free real-time space simulation that lets you experience our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.

All travel in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.

Download Celestia 1.5.0 in Softonic

NASA released World Wind six months before Google Earth, yet it failed to make as much of an impact. However, anything coming out of the prestigious American aeronautics administration is definitely worth a closer look. So what sets World Wind apart from Google Earth?

World Wind's real selling point is the quality of its satellite imagery. World Wind reveals Earth in many different perspectives thanks to the large variety of maps. Blue Marble exposes Earth in its true colors, Landsat 7 gives you high resolution imagery, and MODIS can display time relevant data such as earthquakes, fires or floods. Browse over mountains and observe the snowy peaks, the clouds, and the different colors of the rock, with incredible precision. Be aware though that the lower you go, the more detail will appear, and World Wind will take more time to process the image.

A digital globe wouldn't be complete without its own search option. Find a destination by typing its name in the search tool located on the top bar. Landmarks are particularly well catalogued. If you select the landmark finder tool from the top section, World Wind will exhibit small tags for all locations it considers of significance. Click on the tag and you will be directed to the Wikipedia page for that particular landmark, where you'll be able to read all about it. It is important to point out however that the search function in World Wind is not as good at finding cities as it is with landmarks.

Another of World Wind's assets is its usability. Zoom in over the map using the rollover button of your mouse and skim to parts of the screen with your mouse. The more you focus down on a place the more names of cities and significant locations pop up. These can clog up your screen however, so you'd be wise to configure World Wind to only show the information you need, like country borders and urban areas.

To set itself apart from Google Earth, World Wind provides two original tools. Capitalizing on its lunar explorations, the aeronautics administration lets you view the Moon in extremely high definition. Focus in on its craters, deserts and plains and search for Apollo 11's landing site. Additionally, World Wind recreates the infamous Oregon trail mapped out by American adventurers Lewis and Clark at the beginning of the 19th century, stretching out from Independece, Missouri to the Pacific state of Oregon. World Wind points to significant landmarks which should be of interest to students or history amateurs.

World Wind is as good a digital imagery program as Google Earth. While the image resolution process can be sluggish, World Wind manages to set itself apart thanks to its landmark finder and fun tools like the Moon visualizer and the Lewis & Clark trail.

Download NASA World Wind 1.3.5 in Softonic

Google's satellite imagery software has truly changed the way we look at the globe. The application lets you zoom in on any part of the world and for some places, observe from a few meters away.

Google Earth not only displaces satellite images but it also includes terrains and sometimes 3D reconstruction of buildings. You can look for directions and businesses, just like in Google Maps and pinpoint areas or draw on maps straight in Google Earth.

Google Earth includes a very wide, and constantly increasing library of layers, which you can add to the map to enrich your experience. You'll find all sorts of information, from historical landscapes to national parks, regions where you can find endangered species or tourist spots. Google Earth will also showcase more news related information such as forest fires or tsunamis.

If stars is what you are into, turn to the Space mode and navigate among the constellations.

Moving around in Google Earth is incredibly intuitive thanks to the multiple navigation tools. Some areas will show less information than others, and Google Earth is known to use up a substantial amount of bandwidth, but it remains a fascinating piece of software

Google Earth is as of yet an unequalled application. Browse around the world, zoom into streets or go up and gaze at the stars. Millions of possibilities.

Download Google Earth 4.3 Beta in Softonic

Algebrus is meant for everybody who needs to do either scientific analysis or just doing school homework. It provides user with numerous mathematical and analysis functions as well as allows unlimited extension of its functionality by means of user-defined types, constants, operators, routines, and libraries.

Its extensibility is based on a built-in simple to learn and yet powerful programming language XPascal. Algebrus can be used both as a simple "evaluate-while-typing" calculator and as a powerful mathematical analysis application, which includes 2D and 3D graphic plots of functions and data, command line execution console, and a syntax-highlighted XPascal editor as a part of the integrated development environment (IDE).

Calculations include:

• Vector and matrix operations and functions
• 2D and 3D graphic plots of function and data
• More than 50 built-in mathematical functions
• User-programmed procedures and functions
• User-defined types and operators
• Solving of linear algebraic systems
• Solving of ordinary differential equations
• Inversing matrices, Fourier analysis
• Statistical data analysis

Using special Plotter tool, creating 2D and 3D graphic plots of functions requires no programming skills whatsoever. Evaluator tool allows simple and interactive evaluation of functions and procedures. It fully supports interfaced constant declarations that appear in the Evaluator as Parameters section

Download Algebrus 3.2 in Softonic

Reading or writing music is one of the trickiest parts of being a professional musician but software like Melody Assistant can make your life considerably easier.

This program features a wide range of musical symbols that will enable you to create and tablatures including even complex scores such as Gregorian notation. You can input music through the mouse, computer keyboard or even an external MIDI keyboard. The program comes bundled with its own embedded software synthesizer (SoftSynth), which provides high quality output on basic sound cards, even without any external MIDI device, and includes hundreds of different instruments. In addition, you'll find a complete score editor, tablature calculation for miscellaneous string instruments, a chord diagram library for various instruments plus the possibility to allow visitors to view, transpose, play or print your scores. If you're completely new to composing music too, there's a host of very handy video tutorials on the developer website to help you get the most out of it.

Easy to use and with input possibilities from MIDI devices, Melody Assistant will help you write tablature and musical scores in no time.

Download Melody Assistant 7.3.4 in Softonic

WebDicty is a free multilingual dictionary on the web. It has preconfigured a number of on-line Web dictionaries for Spanish, English, German, French, Italian, Catalan, Basque, Portuguese and Dutch including definition and translation dictionaries.

WebDicty does not have a list of words or a local dictionary. Instead, it relies on the freely available dictionaries on the web. Every time you type a word to look it up, WebDicty connects to the selected webpage, gets the answer, filters it an processes it so that is easy to read, removing embedded or pop-up ads. So it is basically a browser of preset pages (the dictionaries) with internal filters to remove the unwanted information. You can also open the actual webpage in your browser from within WebDicty by clicking on the browser button (the world icon).

Download WebDicty 2.3 in Softonic

You can use it to learn any subject, provided it is expressed in terms of Questions & Answers. VTrain draws up a schedule of repetitions for each question ("flashcard"), so that it is retained with only 7 repetitions during the first year (and less thereafter).

VTrain also includes an editor that supports rich text, images, and sound recording. On-screen keyboards in 100 languages allow you to enter virtually any special character. In addition, you can download pre-made flashcards in 40 languages the program's website.

Finally, teachers can edit their VTrain lessons (decks of flashcards) over the school's local area network: the learning files of all students ("training cardfiles") are updated automatically by VTrain. VTrain is a must for serious learners.

Download VTrain (Vocabulary Trainer) 5.1 in Softonic

Islamasoft Solutions is proud to present the Hadith Software English translated hadith (plug-in) databases all bundled together in one easy to use application. The software is equipped with an explorer type user interface for ease of use.

It has the ability to export hadiths books/chapters to a text editor (e.g. Notepad), bookmarks, advanced search engine (super fast), active marker 'highlight text' display, and allows hadiths to be sent to anyone via email + more... This is an excellent resource for both muslims and non-muslims who are interested in learning more about Islam.

Download The Hadith Software 1.0 in Softonic

Google Earth Pro is the professional version of Google Earth. It's downloaded upon registration on its website and adds some extra features to the free version. Do these additional functions make a difference? Let's dig a bit deeper.

Making use of a vast satellite imagery database –actually the same as the free version, Google Earth Pro displays locations from all over the world, enabling you to zoom in from the image of the whole planet to the streets of any capital city. As a Pro version user, you're supposed to enjoy a faster performance, but we couldn't really notice any difference.

Another interesting feature included in the Pro version is the ability to record videos with your movements around the world, which you can use to illustrate trips or even give directions. You can choose different resolutions, but record only in WMV format.

Technical support assistance, Premium print and a GID data importer are other additional capabilities of this Pro version. However, taking into account that both versions share the same image database, which in the end is Google Earth's biggest value, you may as well use the free version.

Download Google Earth Pro 4.3 in Softonic

Finding suitable software to help you out with learning a musical instrument can sometimes prove to be more difficult than just sitting down and teaching yourself. An inproportionate number of programs scrape the surface and don’t provide the flexibility, depth or support that you need to be able to go beyond being a novice. Thankfully, in Guitar Pro you will find a complete tool that will take you from tuning the guitar, through learning the scales and as far as composing your own sheet music.

The main interface is a daunting array of buttons on both the top and bottom of the window. On further inspection it becomes clear that the majority are involved with composing and each one refers to a very specific element. With this in mind, there are actually very few that you need to be familiar with to get going and as your guitar skills progress, so too will your familiarity with the software.

Some of the gizmos included in the software can actually come in useful and let you do everything from one place. The digital guitar tuner and the metronome are extremely handy to have and save you the bother of going out to buy them or of searching through your cluttered room for either. Once prepared, you can get started on the individual note library that lets you visualize the fingering as well as listen to how they should sound. Moving on, you can practice the large variety of scales that each come with a plethora of variations.

Getting the basics down is all well and good, but when it comes to composing or playing sheet music, Guitar Pro has it licked. Using the virtual keyboard or guitar, although tedious, will yield results when you want to compose something of your own, but for optimum results you can hook up your own MIDI device (such as a keyboard) and get cracking on tracks that are as simple or complex as you want. The extra dimension of a separate MIDI device lets you get ideas down much quicker while also giving you the ability to experiment with variations of a piece.

It’s difficult to point out faults with Guitar Pro, but having mentioned the cluttered interface, it could do with a facelift in the form of tabs or something similar that would better categorize and clean up the buttons scattered around the screen. The help file covers each topic without going into excruciating detail and if you’re after some extra resources, you’ll find tablatures, lessons and exercises on the Guitar Pro web site.

A good one-stop solution for beginners and experts alike, Guitar Pro succeeds in delivering the variety and depth required to taking the next step to rock-stardom!

Download Guitar Pro 5.2 in Softonic

Harmony Assistant is a all-in-one software product with digital audio capabilities. Its harmonizing capabilities enable the composer to build quickly and efficiently tunes that include accompaniment, multiple instruments and drum patterns. Its full page edit and engraver modes will ease editing and page setup of your scores.

A wide range of music symbols will enable to edit scores of great quality: notation capabilities are immense. Using the page mode, you will edit the score just as it will be printed on paper. The Engraver mode will make look it nice. Score input can be performed through the mouse, computer keyboard or an external MIDI keyboard.

Harmony Assistant comes with its own embedded software synthesizer (SoftSynth), which provides high quality output on basic sound cards, even without any external MIDI device, and includes hundreds of different instruments. Harmony Assistant can load and save in many formats (MIDI, WAV, AIFF, MP3, OGG, TAB, ABC...).

With MyrScript, the embedded programming language, you can add your own features to the program

More features:

• Complete score editor, with unlimited number of staves
• Page mode editing
• Automatic harmonizer
• Accompaniments & drum patterns in a few clicks
• Tablature calculation for miscellaneous string instrument
• Tablature calculation for Harmonica, diatonic accordion, wind instruments...
• Completely scriptable application. Many open-source scripts are available.
• Embedded softsynth : does not need any hardware other than a sound card.
• Midi, Kar, MOD, S3M... import
• Digital tracks (possible to import WAV, AIFF, MP3, OGG...)
• Wav-to-note pitch tracker, noise reduction, formant-compliant pitch change, ...
• Gregorian notation
• Chord diagram library for various instruments
• Enables to build custom instruments from digital recordings
• Lute tablatures
• Street organ card printing
• Karaoke and multi-voices lyrics are actually sung.
• Enable visitors of your Web site to view, transpose, play or print your scores

Download Harmony Assistant 9.4.6 in Softonic

With more power and speed than ever before, Finale offers endless possibilities for composing, arranging, hearing and printing your music. The original, groundbreaking notation software introduces new features that nurture and fuel creativity. Finale 2007 includes revolutionary tools for teaching students how to create, evaluate and shape ideas into songs, arrangements and compositions.

The largest publishers, including Hal Leonard engrave with Finale. Prestigious schools like Juilliard and Berklee College of Music teach with Finale. World-class arts organizations such as the Metropolitan Opera and Jazz at Lincoln Center rely on Finale.

Download Finale 2007 in Softonic

With 3D World Map, you can view the earth in 3D, get references on 269 countries and entities, locate and compare more than 30,000 cities, compute the distance between any two points on the earth's surface, and amplify the altitude above sea level to see what the earth looks like.

In addition, you can run the program as a screensaver. A built-in MP3 player will pick a number of songs randomly from several directories or according to your settings, when the program starts.

Almost every feature is customizable: You can change the color of the earth, adjust saturation and brightness of the globe texture, run the program in standard window, full screen or transparent window mode.

Download 3D World Map 2.1 in Softonic

This song-based learning software complements guitar tablature by providing additional, detailed instructions that guitar tab alone is unable to provide. Guitar Guru teaches guitarists of all skill levels how to play songs from a variety of genres.

Tools and features:

• Virtual fret board displays proper fingerings in real-time
• Detailed instructions for all guitar parts in a song
• Adjustable playback/learning tempo
• MIDI or CD-Synched Audio
• Customizable display with additional guitar skins
• Step-Through Playback Function
• Delayed start option: Give yourself time to grab your guitar
• Bass guitar support
• Select MIDI playback instrument to match your preferred sound
• Choose colored dots, numbers or dots and numbers to represent fingerings
• Adjust tempo up to 300% without changing pitch (MIDI only)
• Mute Button: The volume reset has been changed to an on/off toggle

Download Guitar Guru 2.1.4.1 in Softonic

Those of us who feel more attracted by books may have enough with the Windows Calculator, but mathematics people definitely need something more. Here's where Derive 6 comes in handy by presenting you with a wide variety of mathematical tools ready to perform almost any kind of maths operation.

The program displays a blank interface where you insert numbers, expressions, symbols and everything you need to create your calculations. The data is entered through a command line and added in consecutive lines on the program's interface. Besides using your keyboard, you can also use the program's buttons to enter certain symbols which may be harder to find on your keyboard configuration. You can then let Derive solve the problem and also get it printed on paper for further study.

All the operators and commands are conveniently categorized into a menu which, together with a comprehensive help system, make the program very complete and easy to use – that is, if you have some basic maths knowledge. Otherwise, you may as well stick to the Windows Calculator!

Download Derive 6.1 in Softonic