1 Music Clementine: -

 After using this music player, you will not need to find any other option.  All possible options are available here to play the music on the hard drive.  It lets you connect and play online services like Google Drive, Grooveshark, or Last FM.  Its podcast manager is also of great use.

2 Video LAN:-

 Video LAN client or VLC has been introduced for many years, but the open-source video player still remains the best.  It can play any type of file.  You will not need any other player.  Its video and audio output is also excellent.  In this, the looking can also be changed according to the operating system.

3 Office Symphony:- 

Which office suite do you want in one?  It should work with almost all file formats.  It should be easy to use and the formatting toolbar should be simple.  If you want all these features for office work then Symphony is the best option.

4 Cloud Dropbox:- 

If you are thinking of such a cloud storage service, which works well on different machines, then Dropbox is a great service for you.  If you create an account, you can sync your files with Dropbox online and access them from anywhere.  With this, you can complete all your cloud-related work.

5 Email Mozilla Thunderbird:- 

Having a client on your computer Email is always beneficial, whether you need to check the mail in the office or use it as a backup.  The open-source tool Thunderbird is great for this.  With the help of its plethora of extensions, you can customize as per your wish and make the job easy.

6 Image Editor Gimp:- 

Forget Adobe Photoshop, with the help of Gimp, you can easily complete all the work related to image editing.  It is open-source software, which contains almost everything that is found in Photoshop.  It also has tools like layers, smart selection tools, and retouching.  Professional designers can use it well.

7 Instant Messenger Pidgin:-

 By using Pidgin, you will forget about chat clients like Google Talk and Yahoo Messenger.  This great utility works with almost every chat service.  With its help, you can chat with your friends on both Facebook and Google through the same window.  The funny thing is that it is also easy to use.

8 Torrent Deluge: - 

Until six years ago, Utorrent was used as a torrent client.  Some additional software also tries to be installed during its installation.  Deluge Torrent is a cross-platform tool, which is very easy to use.  It has an active community of developers who make plugins for it.

9 Browser Google Chrome: -

If you are still using the default browser that comes with your operating system, then many things are missing from enjoying Google.  Google Chrome works fast, integrates with services like Gmail, and can sync settings and bookmarks across devices.

10 Video Editor Shotcut: -

Have you recorded any video on phone or need footage for a college project?  If you use shortcuts, it does not matter which computer you are working on.  Trimming, splicing, color correction, and audio separation can be done easily with the help of this open-source video editor.