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Free Encryption and
Computer Security
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Free File Encryption
Free Disk Encryption
Non-free Disk Encryption
Free Email Encryption
Free Steganography
Free Checksum utilities
Free Password Managers
Free Firewalls
Non-free firewalls
Internet Protection
Anonymous Web Surfing
Anonymous Web Search
Anonymous Internet Access
Free Network Security Tools
Free Anti-Rootkit Software
Free Security Tools
Data Wiping Tools
Security related Websites & Resources
Related Freebyte Pages
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TreePad X Enterprise
384 Gigabyte Personal Information Manager and Word Processor.
Intuitive and versatile, including Website Generator, spellchecker, thesaurus, attachments, search engine, recycle bin, and much more! For Windows and Linux/Wine.
Click here to get the free evaluation version.
Free File Encryption
AES CryptFreeware, open-source file encryption program for Linux, Windows, MAC, JAVA.
AxCryptFreeware open-source file-encryption software for Windows.
Cryptainer LECryptainer creates a secure archive (= an encrypted container or a vault) to store any type of data. It uses 128 bit encryption. Files can be added to or extracted from the archive through a simple drag and drop operation. It also functions on removable disks such as USB drives. The archive you create is self extracting. This means that the recipient does not have to have any special software to decrypt the files. Freeware, for Windows.
CrypToolCrypTool is a freeware educational program which enables you to apply and analyze cryptographic mechanisms. CrypTool has implemented almost all state-of-the-art crypto functions and allows you to learn about and use cryptography from within a single environment.
File Vault You can create a secure archive of files with this utility. Ideal for sending secured information over the internet or on disks. The archive you create is self extracting. This means that the recipient does not have to have any special software to decrypt the files!!
FreeSecurityFreeware 128bit AES file encryption program. It is created using Java, so it runs on: Linux, MAC, Windows and Solaris.
GPGeeA shell extension for Windows explorer that acts as an assistant for using GnuPG/GPG. It integrates itself into the context menu that appears when you right-click on a file and adds a new menu with functions to allow you to sign and/or encrypt any file.
MEOFree file encryption software for Mac and Windows to encrypt and decrypt files and directories and create self-extracting encrypted files.
Free Disk Encryption
Bestcrypt travellerFreeware zero-install program for Windows to create and access virtual encrypted virtual disks.
CryptoExpert LiteFreeware for Windows. Creates encrypted virtual disks and these disks are visible as usual disks with drive letters The data stored on a CryptoExpert disk is stored inside a container file.
Dekart Private
Disk Light
Dekart Private Disk Light allows you to create a secure space for all your work, exchange encrypted data with others, It creates one or more secure virtual disks on your hard drive. Information stored in this secure area is automatically encrypted and may only be decrypted by entering the correct password. Without the password, the information from a secure disk cannot be accessed and decrypted. Freeware for Windows.
ScramDiskFree, open-source Linux driver to create and use virtual encrypted and password protected scramdisk and truecrypt containers. These containers can be accessed like normal harddisk drives.
TrueCryptFreeware, open-source disc encryption software for Linux, MAC and Windows. TrueCrypt can create a virtual encrypted disk inside a file and mount it as a real disk. It can also encrypt an entire partition and start an operating system from inside the encrypted partition. You can even create a hidden encrypted disk inside a regular virtual encrypted disk. If at one point you are forced to give others access your computer (in whatever situation), they might see the file of the regular encrypted disk, and pressure you for its password. However, you can deny the existence of the hidden encrypted disk, because they will not be able see the hidden disk. This is called the principle of plausible deniability.
TrueCrypt is also fully portable, meaning that you can run it directly off a USB drive without installing it.
VeraCryptFreeware, open-source encryption software for Linux, Windows and MAC. VeraCrypt can create a virtual encrypted disk inside a file and mount it as a real disk. It can also encrypt an entire partition. It is based on TrueCrypt and claims to be more secure than TrueCrypt.
Non-free Disk Encryption
BestCryptSoftware for creating and using encrypted drives which can be accessed like any other disk-drive on Windows. The encrypted volume is simply a file which resides on your local harddisk but it can also be located on a USB stick. You can only access the volume after entering a password. Suitable for Windows 32-bit and 64-bit. Uses AES, Blowfish, Twofish, CAST and other encryption algorithms.
Registration fee: $ 59.95 / EU 59.95.
DriveCryptCreates encrypted drives which can be accessed through a drive letter. Like with Bestcript, the encrypted drive is a regular file which can also be located on a USB stick. Suitable for Windows 32-bit and 64-bit. Uses AES, Blowfish, Tea 16, Tea 32, Des, Triple Des, Misty 1 and Square. $ 59.95.
Free Email Encryption
gnuPGFreeware and open source replacement for PGP. Does not use any patented algorithms.
Algorithms supported: AES, ElGamal, DSA, 3DES, Blowfish, Twofish, CAST5, MD5, SHA-1, RIPE-MD-160 and TIGER.
Runs on Windows, Linux, Free BSD, Open BSD, Net BSD, etc.
Freeware PGP versionsFreeware PGP file/email encryption editions for a variety of platforms.
Free Steganography
The software in this section enables you to hide (insert) data inside images (and other files) so that the presence of the information becomes invisible to others.
In general: "Steganography" enables the creation messages in such a way that the existence of the message is hidden to anyone but the recipient.
BitCrypt FreeFreeware program for Windows, allowing encryption of plain text within bitmap image. What it does is to modify the individual pixel shadings of the image, and in this way to incorporate the information related to the text being encrypted. The modifications of the image are so small that the effect is not perceptible to the human eye.
OutGuessCan hide information in JPEG and PNM images. OutGuess preserves statistics based on frequency counts. As a result, statistical tests based on frequency counts on JPEG images are unable to detect the presence of steganographic content.
wbStegoEncrypts and hides information in bitmaps, text files, HTML files and PDF files.
Free Checksum utilities
File Checksum Tool
A free utility for Windows that can generate a MD5, SHA-1, HAVAL, MD2, SHA-256, SHA-384, SHA-512 hash (= checksum) from a file.
MD5A command line utility for Linux/Unix or MS-DOS/Windows, which generates and verifies message digests (digital signatures) using the MD5 algorithm.
WinMD5SumFreeware program for Windows to verify data integrity using the MD5 128-bit cryptographic hash.
Free Password Managers
RoboFormA free password manager for Windows, which can also fill in Web forms. Many features, such as: auto-fill passwords in login form, click Login button for you, fills in personal info into online forms, etc.
Free Firewalls
AppArmorSecurity suite for Linux, freeware, open-source. AppArmor is also very useful for preventing scripts and programs running on Webservers from being hacked and exploited.
AS3 Personal FirewallFree firewall for Windows (32bit).
AshampooOffers a free firewall for Windows.
ComodoFree firewall + anti-virus for Windows.
Core ForceOpen-source firewall, packet-sniffer and security framework for Windows.
FirestarterFreeware open-source firewall for Linux with graphical user-interface.
FortKnox Personal FirewallFree firewall for Windows.
Home PC Firewall GuideIndependent reviews of Internet security and privacy-related products.
IPCopA Linux distribution which can turn an old or a new PC into a dedicated firewall.
Iptables-tutorialTutorial for the Linux iptables firewall configuration program.
Linux/BSD firewallsA list of free firewall software which runs on Linux, FreeBSD and/or OpenBSD.
NetdefenderFreeware open-source firewall for Windows.
Omniquad Personal
Firewall Freeware
Free firewall for Windows. Although the site looks like it has been abandoned you can still download the firewall.
Outpost Firewall FreeFree firewall for Windows.
PC Tools Firewall PlusA free personal firewall for Windows.
R-FirewallFreeware firewall for Windows, with many features.
SoftPerfectFree personal firewall for Windows.
Sunbelt Personal FirewallFree firewall for Windows. The version offered for download is the full 30-day trial version as well as the feature-limited free version.
Vista Firewall ControlA freeware application which makes the configuration of the built-in firewall of Windows Vista and Windows 7 easier.
Zone Alarm
Free Firewall
Free basic PC desktop firewall for Windows.
Non-free firewalls
AVS FirewallFirewall for Windows (32-bit only) with registry protection, ad-blocking, parental control. rules, view/control traffic, alerts, multilingual support.
Jetico Personal FirewallFirewall for Windows XP, Vista and 200X (32-bit and 64-bit). One-time registration fee: $ 39.95 / EU 39.95. Since the registration fee is not a subscription, this firewall is actually quite reasonably priced compared to the other non-free firewalls listed here.
ESET Smart SecurityFirewall for Windows. The subscription fee is around $ 60 per year.
Kerio WinRoute FirewallMulti-user firewall suite for companies starting at around $ 200.
LavasoftFirewall for Windows, subscription fee $29.95 per year. There does not seem to be an evaluation version available though. It would be nice to be able to try it out before deciding to subscribe to it or not.
Online ArmorFirewall for Windows. Subscription fee: $39.95 per year.
Internet Protection
K9 Web ProtectionFree Internet filter and parental control software for Windows and MAC. Features: block certain Web sites, safe search, set up time restrictions, configure lists for allowing or blocking Web sites, and more.
TreePad X Enterprise
384 Gigabyte Personal Information Manager and Word Processor.
Intuitive and versatile, including Website Generator, spellchecker, thesaurus, attachments, search engine, recycle bin, and much more! For Windows and Linux/Wine.
Click here to get the free evaluation version.
Anonymous Web Surfing
A1 Anonymous ProxyFree anonymous Websurfing.
AnonymouseFree anonymous Websurfing.
the CloackFree anonymous Websurfing.
Free Hide IPA free Windows program, which enables you to hide your IP address while being online.
TorTor = "The Onion Router Network". Tor and the Tor Browser Bundle protect your anonymity online. Tor is free and open-source software. It directs your Internet traffic through a network especially designed to keep your location and identity hidden.
For Linux, Unix, Windows, MAC, Android.
Anonymous Web Search
DuckDuckGoThis Web search engine does not collect any information that can identify you.
GoogleSharingSearch Google anonymously through a Mozilla FireFox addon.
ixquickThis search engine does not record your IP address.
StartpageOffers Google Web results while removing all identifying information (such as your IP address, cookies).
Anonymous Internet Access
The services in this section offer private Internet access through a VPN tunnel. Your connection gets encrypted so that even your Internet-access (cable) provider does not know which sites you connect to, what search terms you use, and what else you do online. Not only your Web-surfing is encrypted (anonymized) but also any other type of communications, such as email, phone. Other advantages: IP-cloaking, safe internet access even when using public wifi, unrestricted and uncensored access to the complete internet.
CyberGhostHas a free VPN plan. For Linux, Windows, MAC, iOS, Android.
SurfEasyHas a free VPN plan. For Windows, MAC, iOS, Android.
TorTor = "The Onion Router Network". Tor and the Tor Browser Bundle protect your anonymity online. Tor is free and open-source software. It directs your Internet traffic through a network especially designed to keep your location and identity hidden.
For Linux, Unix, Windows, MAC, Android.
VPNBookFree VPN Internet service. Compatible with Linux, Windows, MAC, iOS, Android using OpenVPN.
VPN GateFree VPN Internet service for Windows, MAC, iOS, Android.
FrootVPNNon-free VPN internet service, from $ 3.00 per month. For Linux, Windows, MAC, Android.
Free Hide IPHas a free VPN plan. For Windows.
PIANon-free VPN internet service, from $ 3.33 per month. Compatible with: Linux, Windows, MAC, Android, iOS.
Hide My AssNon-free VPN internet service, from $ 6.55 per month. Compatible with Windows, MAC, Android, iOS.
AnonymizerNon-free VPN internet service. For Linux, Windows, MAC iOS, Android.
Free Network Security Tools
Shields Up!Website which tests your computer ports for vulnerabilities from outside attacks through the Internet. Navigation is rather cumbersome on this site. To access the 'Shields up' service, first click on the 'Shields up' logo, then scroll to the paragraph 'Hot Spots', click on the entry 'Shields up!', finally click on the 'proceed' button. In the 'Shields up' screen, click on 'All Service Ports', or 'Common Ports'.
Free Port ScannerFor Windows. Scans ports and port ranges by using TCP packets. It can determine available hosts and open ports and other important characteristics.
Free Anti-Rootkit Software
A rootkit is a set of utilities which can run hidden on a computer system, often with the intention of providing secret access to (and control over) the computer's operating system. Usually hackers, viruses, worms and other malicious entities use rootkits to hide their presence on infected systems.
Sophos Anti-RootkitFree rootkit detection and removal tool for Windows.
chrootkitFree anti-rootkit program for Linux, MAC, BSD, Solarix and other Unix versions.
Rootkit Hook AnalyzerIdentifies all processes which are 'hooked' into the operating system kernel ('kernel hooks'). Some of these hooks may be legitimate, some might be malicious.
Suitable for Windows XP, 2000 and 2003.
RootkitRevealerA free root kit detection utility for Windows NT 4 and higher which detects all persistent rootkits.
Rootkit HunterA free rootkit scanner for Linux and BSD.
GMERA free application that detects and removes rootkits. For Windows.
Free Security Tools
ProcesssquicklinkFree program that integrates with the Windows taskmanager. After installation, near each process inside the Windows taskmanager you will see an 'information' button. If you click on this button you will be taken to an online page describing the process.
NmapA "Network Mapper", which can be used to create a map of a computer-network. Nmap can be used as a diagnostics tool to make your network more secure, but it can also be used for hacking purposes. For Linux, Windows and MAC.
FREE CompuSecFree suite of security solutions designed to protect desktops and notebooks: pre-boot access control with password, hard disk encryption, file encryption, encryption of removable disks, SafeLan. It can be deployed as single user installation or centrally managed.
Freeware for Linux and Windows.
Data Wiping Tools
If you need to remove sensitive data totally from your harddisk, simply deleting these files is not enough! Using advanced methods, it is even possible to recover data that's been overwritten, unless it has been overwritten using carefully selected patterns!
Operating systems usually do not totally delete the file, but just mark the file as being 'deleted' so it can not be accessed when you view the contents of a directory. This means that you can not see the file anymore with normal tools, but specialized recovery tools can still access your data.
To prevent this from happening, you need to totally erase your files, using one of the specialized data removal tools you can find in this section. These removal tools totally erase your data by replacing the contents of your files with effective data-patterns before deleting them the normal way.
After WorkFree Windows utility which can be used to wipe sensitive data from your computer, such as: temporary internet files, IE history, visited sites, opened documents, started programs, temporary registry values.
CleanDiskNon-free. Total deletion of files, clean the Windows swap file, clean temporary files. Contains disk viewer to view the real contents of your disk including 'deleted' entries. Suitable for Win95, Win98, WinME, WinNT, Win2000, WinXP.
EraserFreeware for Windows. Eraser can remove sensitive data from your hard drive by overwriting it with carefully selected patterns. You can drag and drop files and folders to the on-demand eraser, use the convenient Explorer shell extension or use the integrated scheduler to program overwriting of unused disk space or, for example, browser cache files to happen regularly, at night, during your lunch break, at weekends or whenever you like.
Free Security Soft:
File Eraser
Erases files by overwriting the contents with random bytes before deleting them. Freeware for Windows.
How to destroy a CD or DVDDon't just throw away your CD's and DVD's when they contain personal or sensitive data. First you need to make sure that the data is unretrievable.
KillDiskHarddisk, floppy and partition eraser. Free and non-free editions are available.
No File RecoveryFree disk wipe utility for Windows.
Security related Websites & Resources
All Internet SecurityDirectory which is aimed at both PC and Macintosh users and security professionals.
Security forum
Discussion forum on security and privacy-related matters.
Essays on security
and encryption
A large number of essays on security and encryption written by Bruce Schneier, who is one of the top encryption specialists in the world. He has also written many useful books on the subject.
GruyereGoogle codelab which shows how Web application vulnerabilities can be exploited and how to defend against these attacks.
The Hackers ChoicePapers, research and other resources related to computer security.
HackingAlert.comExpert Tips to Deal with Hacking.
Krebs on SecurityArticles related to: online crime investigations, the latest threats, security updates, data breaches and cyber justice.
Offensive ComputingMalicious code research, information and analysis
ProcessLibrary.comA free online library of processes is for everyone who needs to know the exact nature and purpose of every process that should, and should not, be running on their PC.
SecurityFocusThis Website is designed to facilitate discussion on computer security related topics, create computer security awareness, and to provide a comprehensive database of computer security knowledge and resources to the public. It also hosts the BUGTRAQ mailing list.
Top 100 Network Security ToolsLots of free network-related security tools.
Related Freebyte Pages
Free Anti-virus SoftwareBelieve it or not, there are many good anti-virus programs you can download and use for free! Also: free firewalls, very useful trial anti-virus program versions, anti-virus software tests, links to specialized anti-virus sites, etc.
Free Anti-SpywareFree utilities to detect and remove spyware.
Free Anti-Spam ToolsFree spam-filter services, free anti-spam software, free spam-reporting services, free anti-spam email services, free server-side anti-spam tools, etc.
Anonymous InternetAnonymous Web search, anonymous Web surfing, anonymous email and anti-spam email.
Free File and
Disk Utilities
Disk catalog programs; backup, compression, split and zip programs; disk search engines, disk management utilities, remote file storage services, data recovery tools, data wipe tools, downloadable boot disks and more.
Free System and
Administrator utilities
Free process viewers, system analysis tools, network monitoring tools, registry tools, task schedulers.
Free Software
created by Freebyte
Free Personal Information Managers, free File and Disk Utilities, free Address Books, free eBook Software and more. All created by
Free Technical SupportFree technical support for all computer-related issues: Hardware, software, PC, Windows, MAC, PDAs, Linux, drivers, Modems, dll's, virus.
Free drivers, dll's,
and bios upgrades
Find your missing system file (dll, vxd, ocx, driver, etc.) or BIOS upgrade, and download it for free.
Free Operating SystemsFree operating systems, such as: FreeBSD, Windows clones, emulators and much more. Also: interesting alternative commercial operating systems.
Free Programming ToolsFree programming tools for Windows, Linux, etc. Free C++, C, Delphi, Basic, Assembler, Cobol, Pascal, Java, SQL, Databases; links to free compilers, databases, interpreters, IDE's, installers, components, libraries, languages, helpfile generators and more.
Software sitesA large list of freeware sites, freebie sites, shareware sites and software search engines.
Also check out our free software
for Windows and Linux/wine!
TreePad LiteFree organizer/information manager
exe-eBook CreatorFree eBook compiler
Freebyte BackupFree backup program
Fast File RenamerFree multiple file renaming tool
Custom Addressbook LiteFree addressbook
DisktectiveFree Disk-space reporting tool
HJSplitFreeware file splitters - multiplatform
Harddisk Search and StatsFree search engine for your harddisk
Freebyte ZIPFree zip/unzip program
Information wanted!
If you know of any good programs, utilities or services be listed on this page, please let us know!
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Last updated on April 03, 2015

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