I have started using portable apps and i like it because you can have as many apps as you like and they don't install in the registry so you have no conflicts. Also they take up very little room and can be installed on a USB flash drive.
If you go to this lifehacker link they will explain the need for portable software over regular software.
http://lifehacker.com/5890856/kick-windows-installers-to-the-curb-go-portable-for-a-considerably-more-awesome-windows-experience
Here is a link to 50 free open-source portable apps. If you don't know the difference free usually means a 30 day trial or it doesn't have all the features. Open-source is really free and the source code is free too. Open source will always be free.
http://www.datamation.com/osrc/article.php/3931816/Top-50-Portable-Open-Source-Apps.htm
If you go to this lifehacker link they will explain the need for portable software over regular software.
http://lifehacker.com/5890856/kick-windows-installers-to-the-curb-go-portable-for-a-considerably-more-awesome-windows-experience
Here is a link to 50 free open-source portable apps. If you don't know the difference free usually means a 30 day trial or it doesn't have all the features. Open-source is really free and the source code is free too. Open source will always be free.
http://www.datamation.com/osrc/article.php/3931816/Top-50-Portable-Open-Source-Apps.htm