推荐几种 Windows 平台下优秀的免费软件

Free Download Manager
Free Download Manager (FDM) is a full-featured download accelerator and
manager. It is absolutely free! Using this software product you can
easily download a list of files and whole web sites from any remote
server via HTTP, HTTPS and FTP. With FDM the downloading process will
be as easy as never before!
轻量级的一个下载工具，功能和Flashget类似，但是启动更快、更加智能、更加易用。

ZoneAlarm
ZoneAlarm is free for individual and not-for-profit charitable entity
use (excluding governmental entities and educational institutions).
免费的防火墙，非常精确的控制。还可以试用15天Pro版本，如果愿意付费的话可以购买license以便使用Pro，不愿意的话可以切换回普通版本，一样可以获得足够的网络保护。

AVG Anti Virus Free Edition
AVG Free Edition is the well-known anti-virus protection tool. AVG Free
is available free-of-charge to home users for the life of the product!
Rapid virus database updates are available for the lifetime of the
product, thereby providing the high-level of detection capability that
millions of users around the world trust to protect their computers.
AVG Free is easy-to-use and will not slow your system down (low system
resource requirements).
像ZoneAlarm一样，也是商业软件的免费版本，也就是对于家庭、个人用户可以获得免费的license。占用的资源很少，但是防毒能力照样强大，大概每两天升级一次病毒数据库，连接速度很快。

7-Zip
7-Zip is a file archiver with high compression ratio.
7-Zip is free software distributed under the GNU LGPL.
免费的压缩工具，支持RAR，不用再去破解WinRAR了。

gVim
Vim的图形化版本，在各种平台下都能运行，代替UltraEdit绰绰有余。这个太有名望，我就不罗嗦了。

XnView
Come to discover XnView[/b], a software to view and
convert graphic files, really simple to use ! Support of more than 400
graphics formats ! It's free, so do not hesitate !
XnView提供了如下功能：图像、图形文件的查看、浏览、编辑，幻灯片播放，图像图形文件格式转换等等，完全可以替代ACDSee。XnView对于非商业用途是完全免费的，但是XnView for Linux/FreeBSD的版本可以免费用于商业用途。