Most of the Open Source softwares are much better than their proprietary alternatives. So I prefer to look for Open software before going for any proprietary one. Also if we use such softwares, it’s our responsibility to support and promote them. I want to share my personal favorite list of open source softwares. Please share in comments if you know any other open source software which is better than the one listed below.

3D Graphics

Blender [Website]

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Browsers

Firefox [Website]

Chromium [Home Page, Download Chromium]

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Code Editor/IDE

Aptana [Website]

Eclipse [Website]

Komodo Edit [Website]

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CMS

DotNetNuke [Website]

Drupal [Website]

Joomla [Website]

OpenCms [Website]

WordPress [Website]

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Compression

7-Zip [Website]

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Database

MongoDB [Website]

MySQL [Website]

PostgreSQL [Website]

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Download Manager

Free Download Manager [Website]

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Email Client

Thunderbird [Website]

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FTP

FileZilla FTP Client/Server [Website]

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Image Editor

GIMP [Website]

Paint.NET [Website]

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Instant Messaging

Pidgin [Website]

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Media Players

VLC [Website]

Miro [Website]

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Office Suite

LibreOffice [Website]

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P2P

BitTorrent [Website]

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PDF Creator/Reader

PDFCreator [Website]

Sumatra PDF [Website]

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Remote Desktop

UltraVNC [Website]

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Security

Eraser [Website]

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Text Editor

Notepad++ [Website]

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Vector Graphics Editor

InkScape [Website]