An App'a'Day will keep the headaches away!

Paint.NET
http://www.getpaint.net/index.html

Paint.NET is free image and photo editing software for computers that run Windows. It features an intuitive and innovative user interface with support for layers, unlimited undo, special effects, and a wide variety of useful and powerful tools. An active and growing online community provides friendly help, tutorials, and plugins.
It started development as an undergraduate college senior design project mentored by Microsoft, and is currently being maintained by some of the alumni that originally worked on it. Originally intended as a free replacement for the Microsoft Paint software that comes with Windows, it has grown into a powerful yet simple image and photo editor tool. It has been compared to other digital photo editing software packages such as Adobe® Photoshop®, Corel® Paint Shop Pro®, Microsoft Photo Editor, and The GIMP.

EBTABLES
http://ebtables.sourceforge.net/documentation.html#features

sure you have heard of IPTABLES but have you ever wanted to go on step lower in the OSI table? well here is the answer. The ebtables utility enables basic Ethernet frame filtering on a Linux bridge, logging, MAC NAT and brouting. It only provides basic IP filtering, the full-fledged IP filtering on a Linux bridge is done with iptables. The so-called bridge-nf code makes iptables see the bridged IP packets and enables transparent IP NAT. The firewalling tools iptables and ebtables can be used together and are complementary. ebtables tries to provide the bridge firewalling that iptables cannot provide, namely the filtering of non-IP traffic.

SSL-Explorer
http://3sp.com/en/enterprise-edition/?referrer=sslexplorer

his unique software-based SSL VPN solution offers advanced features in a manner that is both cost-effective and easy to manage. These include enhanced multi-layered authentication methods, hardware authentication token support, full IPSec replacement, finely-grained policy-based access control along with powerful auditing and reporting tools.

Security Management And Risk Tracking (SMART)
http://smart.conformix.com/

Security Management and Risk Tracking is a web based application to manage information security practice. This is a comprehensive solution that enables a corporation to manage:

# Information security policy
# Security policy exception handling
# Security Certification and Accreditation (SC&A)
# Issue tracking for security audit, pen testing, SOX, and so on
# Third party connection management
# Asset and vendor management

A number of other services are also included in this solution. This is an enterprise ready application that greatly reduces the time and effort to manage a security practice.

KNOTE
http://www.tranglos.com/free/keynote.html

Keynote is a flexible, multi-featured tabbed notebook, based on Windows standard RichEdit control. It's always accessible with a single keypress, even if you work in another application. Take a look at the screenshots page.

The basic idea in KeyNote is that you can include many separate notes within a single file. This means that you do not need to open several files - for most purposes it is enough to create only one file and hold all your notes inside it. With the addition of the tree-type notes, you now have a three-dimensional notebook: many notes within one file and a multi-level, nested pages within a single note. Optionally, KeyNote can encrypt your data securely using the Blowfish or Idea algorithms. Keynote's interface and behavior are extremely configurable.

The project is discontinued, so anyone willing to continue it, please step forward. the tool as is is stable and functions.

AUDACITY
http://sourceforge.net/projects/audacity

A fast multi-track audio editor and recorder for Linux, BSD, Mac OS, and Windows. Supports WAV, AIFF, Ogg, and MP3 formats. Features include envelope editing, mixing, built-in effects and plug-ins, all with unlimited undo.

AutoGK
http://www.autogk.me.uk/

AutoGK accepts input files with the following extensions: MPG, MPEG, VOB, VRO, M2V, DAT, IFO, TS, TP, TRP, M2T, AVI. In terms of formats it suppors mpeg1, mpeg2, transport streams, vobs from DVDs and practically any codec in AVI file. For restriction on AVI input see question 5.12. One special mode that AutoGK has starting from version 2.15 is IFO file input that replaced "DVD mode" from older version. Now all you have to do is to point AutoGK to IFO file and it will pick up vobs that has the same VTS number (i.e. VTS_??_?.vob files, so you can't point it to global video_ts.ifo file).

dunno about you guys, but for one, I have been doing some small compilations and AutoGK does the trick!
everyonce in a while i use snagit to take a screen video session to document stuff and for training, it usually outputs stuff in raw avi format, hence the files are huge! autogk does the trick and drops the size to a fraction of the original!

CODA
http://www.coda.cs.cmu.edu/about.html

Coda is a distributed filesystem with its origin in AFS2. It has many features that are very desirable for network filesystems. Currently, Coda has several features not found elsewhere.

1. disconnected operation for mobile computing
2. is freely available under a liberal license
3. high performance through client side persistent caching
4. server replication
5. security model for authentication, encryption and access control
6. continued operation during partial network failures in server network
7. network bandwith adaptation
8. good scalability
9. well defined semantics of sharing, even in the presence of network failures

rolf wrote

BashLogic wroteCODA
http://www.coda.cs.cmu.edu/about.html

Coda is a distributed filesystem with its origin in AFS2. It has many features that are very desirable for network filesystems. Currently, Coda has several features not found elsewhere.

1. disconnected operation for mobile computing
2. is freely available under a liberal license
3. high performance through client side persistent caching
4. server replication
5. security model for authentication, encryption and access control
6. continued operation during partial network failures in server network
7. network bandwith adaptation
8. good scalability
9. well defined semantics of sharing, even in the presence of network failures

No inherent versionning support? ... :(

you can always support the project and help on it ;)

KIGO
http://www.kigo-video-converter.com/

With it, you could easily convert MPG, AVI, RMVB, MOV, MKV and many other video formats to AVI, MP4, FLV, 3GP and other popular formats at fast speed and great quality. So that you could enjoy these video on your iPod, iPhone, PSP, Zune, cell phone, etc.

DSH
http://freshmeat.net/projects/dsh/

dsh (the distributed shell) is a program which executes a single command on multiple remote machines. It can execute this command in parallel (i.e., on any number of machines at a time) or in serial (by specifying parallel execution of the command on 1 node at a time). It was originally designed to work with rsh, but has full support for ssh and with a little tweaking of the top part of the dsh executable, should work with any program that allows remote execution of a command without an interactive login.

CueCard
http://www.wadeb.com/cuecard/

CueCard is a simple flash card program for studying just about anything. It lets you enter cards on the computer, and then quiz yourself. The interface is very simple, and hopefully intuitive. Also, it's completely free and the source code is provided.

ZARAFA
http://www.zarafa.com/

First we had MS Exchange, then we had loads of opensource "mimocks" then we had zimbra untill yahoo bought it and enforced its policies. now we have a new runner up, ZARAFA. check out the demo! its much lighter than zimbra!