Parental Filter is a specialized parental control filter that enables you to block porn from your web browser. It uses a built-in database of web sites that are blocked, as well as a list of keywords that it scans for on web pages, and blocks them if a they are found. You can specify a list of sites that the user will be redirected to instead, and also customize the list of blocked sites and keywords. Parental Filter provides a password protected interface, can run fully automatic in the background. The program is very effective and works well. 
Get free IP PBX / SIP server software and set-up a professional phone system that allows you to create extensions, transfer calls, and extend low cost VOIP services to all users. Best of all it works via your computer network (no separate phone wiring!) and allows you to use SIP software phones on your PC or any SIP hardware phone. 3CX Phone System runs on Windows and does not require a dedicated PC. You can even attach your existing PSTN lines via a VOIP Gateway.
A voice conferencing application containing both a client and a server which can be used for conversations on the internet.
PicoPhone is a simple Internet phone application with chat. If you want a more advanced application, that has also video, file transfer, address book, that can call regular phones, send SMS messages to cellphones and more, take v-Phone.
The Express Talk softphone works like a telephone to let you make calls through your computer. You can call anyone on the internet who has installed it (or any other SIP softphone). Calls computer to computer are always free. You can also call ordinary 'real' telephone numbers anywhere in the world if you sign with a VoIP gateway service company. 
FireFly is an Internet Phone program, that allows you to talk to friends anywhere in the world, using the Internet and the free Firefly software. The interface is very easy to use, just punch the number of your (Firefly) contact, or select it from the address book. The program also includes a voicemail feature to keep track of calls while you are away or talking to someone else. The program uses your internet connection and voice over IP technology, so there is no charge for these calls. The people you call however need to have the FireFly software installed. We tested the software with an international call (USA to Canada and Australia), and the voice quality was excellent. Firefly Softphone can also make calls to regular landline phones, however this is based on usage charges. 
Make free Skype-to-Skype calls to anyone else, anywhere in the world.Call ordinary phones and mobiles at pretty cheap rates per minute.See who you are talking to with video calls.Send SMS messages to friends on the move.Set up call forwarding so you never miss another call.Group chat with up to 100 people or conference call with up to nine others.Search the web with the Google Toolbar (optional install).Free to download.
Reach-a-Mail is a USB based portable email client. From now on, your e-mail will always be with you no matter where you are. All you need is a USB drive to receive and send e-mail from any computer without the need to install any software. You save a lot of time thanks to Reach-a-Mail, as well as keep your e-mail correspondence private leaving nothing in a computer. You will be impressed by the easiness and simplicity of user’s interface. Reach-a-Mail is a USB based portable email client for active and mobile people!
Thunderbird is a full featured email program with built-in junk mail controls, message filters, address book, news groups and more. It offers a clean and easy to use (customizable) interface. Thunderbird also offers security features such as S/MIME, digital signing, message encryption, support for certificates and security devices. Other features include IMAP/POP compatibility, support for HTML mail, labels, quick search, return receipts, LDAP address completion, import tools and more. 
Crypto Anywhere is a secure, portable email client that is small enough to fit on a single floppy or USB key chain drive. It allows you to send secure email messages from anywhere, without the need to install any software. You can decrypt and encrypt messages using PGP, OpenPGP, SecExMail and others. The program also offers the choice of self-decrypting messages (receiver only needs the password) or public key encryption (receiver needs decryption software). Crypto Anywhere implements strong encryption algorithms based on RSA public key encryption, the Twofish block cipher and the ISAAC random number generator. Additional features include support for attachments, secure friends list (stored keys), message decryption and more. Crypto Anywhere is easy to use and free for personal use. Commercial version requires registration.
