# Software

On this page, we have listed document viewers, graphing tools, calculators and other useful software for Mathematics. As most of the visitors of our websites are using android mobiles, therefore first of all we are giving some apps for Android.

## Apps for Androids

**EBookDroid - PDF & DJVU Reader**: This is a very good app for viewing PDF and DjVu files on the Android devices. It can be downloaded from the following link: http://bit.ly/2vUbqMO

**Desmos Graphing Calculator**: Plot polar, cartesian, or parametric graphs. There’s no limit to how many expressions you can graph at one time - and you don’t even need to enter expressions in y= form!. To explore its features or download the app, please see the following: https://bit.ly/2Rs141c

**PhotoMath**: Photomath reads and solves mathematical problems instantly by using the camera of your mobile device. Check your work for any printed or handwritten problems. It can downloaded from following page: https://bit.ly/3aZARPn

## PDF Reader & Writer

First of all, we are giving list of PDF Reader and Writers.

**Adobe Acrobat Reader DC**: This is one of the best and popular PDF readers with lot of options. With respect to $\LaTeX$ compiling, it lock the open file which create the problem to compile PDF in $\LaTeX$ and also inverse and forward search is not available but it has full multimedia support. One can get it from the following link: https://get.adobe.com/reader/

**Sumatra PDF**: This is a light weight PDF viewer, this has good compatibility with $\LaTeX$ compiler. One can download it from the following page: https://www.sumatrapdfreader.org/download-free-pdf-viewer.html

**Nitro PDF Reader**: It is good viewer to add text in PDF. Actually Acrobat Reader and Nitro PDF Reader is good option to fill forms in PDF but additionally one can fill a non-editable or fill-able form in Nitro PDF. One get it from following page: https://www.gonitro.com/pdf-reader

**CutePDF Writer**: This one is best and free option to convert any document to PDF just by printing a document with CutePDF Writher. One can get a latest version from the following page: https://www.cutepdf.com/Products/CutePDF/writer.asp

## DjView Reader or Viewer

DjVu is a computer file format designed primarily to store scanned documents, especially those containing a combination of text, line drawings, indexed color images, and photographs. This is famous because of their small size.

**WinDjView**: This is a viewer for windows operating system. One can get it from the following link: https://windjview.sourceforge.io/. Its portable version can be downloaded from the following page: https://portableapps.com/apps/office/windjview_portable

**STDU Viewer**: This is a free viewer and its supports TIFF, PDF, DjVu, XPS, JBIG2, WWF document formats. Additionally STDU Viewer supports FB2, TXT, Comic Book Archive (CBR or CBZ), TCR, PalmDoc(PDB), MOBI, AZW, EPub, DCX and image (BMP, PCX, JPEG, GIF, PNG, WMF, EMF, PSD) files. To download, please visit: http://www.stdutility.com/stduviewer.html

**Office 2007 DjVu Exporter**: This is a small utility, which only works in MS Office 2007. It help to export any document to DjVu format from Office 2007. One can get it from here

## Mathematical Tools

**3D Calculator**: Whether you're an educator, who needs to save time preparing lessons, a student who can't afford to spend the time to perform calculations manually, or an engineer or scientist who is under time pressure, Calc 3D is always useful. Its standard version is free and can be downloaded from the following URL: http://www.calc3d.com/edownload.html

**Graph 4.4.2**: 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. This is very helpful to quickly draw the graphs in the class. This can be downloaded from the following URL: https://www.padowan.dk/download/

## LaTeX

LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation. Here we are going to give some information to run $\LaTeX$ on Microsoft Windows. You need to install the following software.

**Sumartra PDF**(If you have Adobe Reader or any other PDF viewer then you can skip to install this)**MiKTeX**: It can be downloaded from the following page: https://miktex.org/download**TeXstudio**: It can be downloaded from it official website: http://www.texstudio.org/