1. OpenOfficeLike the similarly named suite from Microsoft, OpenOffice offers feature-rich desktop applications including a word processor (Writer), spreadsheet (Calc), presentation creator (Impress), and a database (Base), plus a drawing tool (Draw) and a tool for creating mathematical equations (Math). Importantly, the files formats are completely compatible Microsoft Office and other office productivity suites.
2. AbiWord The AbiWord word processor is compatible with OpenOffice, WordPerfect, and Microsoft Word, but its smaller and faster than all of them. It doesnt offer as many advanced features as the more popular programs, but it does offer mail merge, auto-formatting, bulleted and numbered lists, spell-checking, and multiple language support.
3. Scribus Scribus is an open-source desktop publishing application designed to be easy enough for beginners to use while still providing the advanced features needed by professionals. Key features include spot color support, CMYK color, high-grade PDF creation, EPS import/export, and color separations.
4. PDFCreator You dont need to buy Adobe Acrobat in order to create PDF document. The free PDFCreator can turn any printable Windows file into a PDF filesor a PNG, JPG, TIFF, BMP, PCX, PS, or EPS file.
5. AzureusCurrently the most popular BitTorrent client, Azureus offers multiple torrent downloads, upload and download speed limiting, a customizable interface, and more. Its Java-based and supports 26 different languages.
6. BitTorrent This is where you can find the official BitTorrent software. The latest version comes with the Delivery Network Accelerator (DNA) for faster downloads.
7. eMule Noted for its reliability, the eMule client works with multiple peer-to-peer networks. It has a large developer base and improves with each new release.
8. Shareaza Shareaza works with four popular P2P networks: EDonkey2000, Gnutella, BitTorrent and Gnutella2 (G2). The latest release (December 2007) offers better connectivity, better stability, and better skins.
9. DC++ This popular client for the Direct Connect network has been downloaded more than 35 million times. The interface is easy to use, and its 100 percent ad-free.
10. GalleryGallery makes it easy to add lots of photos to your Web site. It automatically creates thumbnail images and allows you to add captions, titles, and/or watermarks to your pictures before you post them online.
11. Coppermine Photo Gallery Like Gallery, Coppermine manages online photo albums. Its a little more difficult to use, but also offers more features than Gallery. For example, Coppermine includes multimedia support, bulletin board integration, and an e-card creation feature.
12. Hugin Sometimes a single photo cant capture the grandeur of a particular scenethats where Hugin comes in. Hugin makes it easy to combine multiple, overlapping photos of a single location into one huge panorama.
1. FeedReaderFeedReader boasts the most comprehensive podcasting support available today, but it keeps the interface basic enough for novices to use. While the basic product is free, only the older versions are truly open-source with the code available for modification. Upgrades to the FeedReader Connect and FeedReader OEM products are available for a fee.
2. RSS Owl This platform-independent RSS reader is easy to use and comes in a variety of different languages. The latest version has improved Owls searching capabilities, and it now displays a pop-up when you have new feeds to read.
3. ClamWinTheres really no need to pay those annual subscription fees for anti-virus protection. ClamWin Free Antivirus offers excellent protection against viruses and spyware at no charge. It includes automatic updates to the virus database, scheduled file scanning, and integration with Windows Explorer and Microsoft Outlook.
4. KeePass If you have trouble keeping track of all your passwords, give KeePass a try. It encrypts all your passwords and stores them in a database which you can unlock with one master keythat means just one password to remember instead of dozens.
5. Eraser Before you donate that old PC to charity, make sure you completely remove all your personal information from the hard drive. Even if you delete your files, a knowledgeable person could retrieve some of the old information. Eraser makes sure that cant happen by writing over the old information with random data.
6. TrueCrypt Storing sensitive data on your PC or a flash drive? TrueCrypt can encrypt all or part of your hard drive or flash drive so that thieves cant access ita must for anyone who travels with a laptop that contains personal financial or business information.
7. WinPT Another option for digital encryption, WinPT (Windows Privacy Tools) contains a number of different applications in one multi-lingual package. In addition to digital encryption, it also allows users to digitally sign documents.
8. OpenFirewall OpenFirewall includes both a kernel-mode and an application-mode firewall to provide two lines of defense against attacks. Unlike the Windows integrated firewall, it checks both inbound and outbound traffic for potential problems.
9. Moon Secure Moon Secure uses the Clam antivirus engine, but adds a second heuristic engine and an enterprise real-time scanner. Its not there yet, but the developers are aiming to create a true enterprise-class open-source antivirus tool.