The Debian project is a strong supporter of free software. Since many different licenses are used on software, a set of guidelines, the Debian Free Software Guidelines (DFSG) were developed to come up with a reasonable definition of what constitutes free software. Only software that complies with the DFSG is allowed in the main distribution of Debian.

Copyleft licenses, with the GNU General Public License being the most prominent: the author retains copyright and permits redistribution under the restriction that all such redistribution is licensed under the same license. Additions and modifications by others must also be licensed under the same "copyleft" license whenever they are distributed with part of the original licensed product. This is also known as a viral, protective, or reciprocal license. Due to the restriction on distribution not everyone considers this type of license to be free.[35][36]


There are thousands of free applications and many operating systems available on the Internet. Users can easily download and install those applications via a package manager that comes included with most Linux distributions. The Free Software Directory maintains a large database of free software packages. Some of the best-known examples include the Linux kernel, the BSD and Linux operating systems, the GNU Compiler Collection and C library; the MySQL relational database; the Apache web server; and the Sendmail mail transport agent. Other influential examples include the Emacs text editor; the GIMP raster drawing and image editor; the X Window System graphical-display system; the LibreOffice office suite; and the TeX and LaTeX typesetting systems.
^ Barton P. Miller; David Koski; Cjin Pheow Lee; Vivekananda Maganty; Ravi Murthy; Ajitkumar Natarajan; Jeff Steidl (October 1995). "Fuzz Revisited: A Re-examination of the Reliability of UNIX Utilities and Services" (PDF). Madison, WI 53706-1685 USA: University of Wisconsin: Computer Sciences Department. Archived from the original (pdf) on 21 June 2010. Retrieved 1 May 2013. ...The reliability of the basic utilities from GNU and Linux were noticeably better than those of the commercial systems [sic]

FileHippo is a pretty solid repository of freeware and shareware apps to be found for Windows and Mac. On the Windows side, you can find updates to third-party utilites by running this utility, which replaces its old Update Checker. It compares what's available on FileHippo.com against what's installed on the PC and helps download the latest version (via FileHippo.com, of course).
Placing legal or practical restrictions on the comprehension or modification of a program, such as mandatory purchase of special licenses, signing of a Non-Disclosure-Agreement (NDA) or - for programming languages that have multiple forms or representation - making the preferred human way of comprehending and editing a program ("source code") inaccessible also makes it proprietary (non-free). Without the freedom to modify a program, people will remain at the mercy of a single vendor.
In 2006, OpenBSD started the first campaign against the use of binary blobs in kernels. Blobs are usually freely distributable device drivers for hardware from vendors that do not reveal driver source code to users or developers. This restricts the users' freedom effectively to modify the software and distribute modified versions. Also, since the blobs are undocumented and may have bugs, they pose a security risk to any operating system whose kernel includes them. The proclaimed aim of the campaign against blobs is to collect hardware documentation that allows developers to write free software drivers for that hardware, ultimately enabling all free operating systems to become or remain blob-free.
Described as a "messaging app / former Emperor of Austria," you can tell from the Web page that Franz is gonna be fun—and useful. The sheer number of services it supports is huge: Slack, Facebook, WhatsApp, Skype, Google Hangouts, Twitter, Gmail, Outlook.com, and HipChat are just the start. You can add a service multiple times if you have multiple accounts.

Absolutely precise information Jawad. I am running a digital agency and most of my clients are based in United States or Canada and its not possible for me to stay in touch with them through traditional phone system as it's too costly. So i started using CallHippo. It is really an amazing tool which helped me get USA virtual phone number and now my clients can call me on that number and they just have to pay local call charges. However, after sometime i came across Salesmate CRM which is having a built in virtual phone system. So, i switched to Salesmate CRM from CallHippo by using number portability services and currently i am using a virtual phone system along with a USA virtual phone number and all other CRM features, which has helped my sales team immensely. I just have to use my CRM to get all the details of clients and manage all the communication channels from one platform itself. Thanks for sharing.


When talking about free software, it is best to avoid using terms like “give away” or “for free,” because those terms imply that the issue is about price, not freedom. Some common terms such as “piracy” embody opinions we hope you won't endorse. See Confusing Words and Phrases that are Worth Avoiding for a discussion of these terms. We also have a list of proper translations of “free software” into various languages.
Amazon-owned comiXology is well known as the store for purchasing digital comics from just about all the major funny-book publishers; its free apps, going by the simple name "Comics," are how you read them. The app is a wonder, making page-by-page or panel-by-panel reading a delight, especially on a comic-book-page-sized tablet. The synced view means you stop on one device and pick up at the next one in the same spot. Pair it with comiXology's unlimited reading subscription option, or buy new comics the same day they appear in stores. For comic book nerds, it's a must. (Windows users will have to stick with the Web interface, as the Windows Store app has been scuttled.)
Your local library isn't just a place you go to find a new novel without paying for it. Libraries subscribe to a number of different business directories, which makes them a perfect place to get leads for free —especially for B2B salespeople. These directories aren't limited to resources like Internet reverse lookups, although such a tool can be very useful if you're looking for business leads. Many companies make it their business to organize information about both the company and their consumers. This information is compiled into a huge database, and this database is pure gold for any salesperson looking to create a new lead list.

^ Barton P. Miller; David Koski; Cjin Pheow Lee; Vivekananda Maganty; Ravi Murthy; Ajitkumar Natarajan; Jeff Steidl (October 1995). "Fuzz Revisited: A Re-examination of the Reliability of UNIX Utilities and Services" (PDF). Madison, WI 53706-1685 USA: University of Wisconsin: Computer Sciences Department. Archived from the original (pdf) on 21 June 2010. Retrieved 1 May 2013. ...The reliability of the basic utilities from GNU and Linux were noticeably better than those of the commercial systems [sic]


At SimplerLeads.com we are experts in email lead generation. The leads we provide you are exclusive to your account (Gold accounts) or shared with only 3 other members (Bronze & Silver Accounts). As a Gold member your leads are exclusive to your account only and will not be given to any other customer. With our lead generation - all leads are delivery verified immediately before being sent to your account and are extremely fresh.
Just like InfoUSA, SalesGenie is an Infogroup product. SalesGenie offers many of the same search options as InfoUSA and the data comes from the same sources. The difference between the two services is that SalesGenie is designed specifically for salespeople, while InfoUSA is designed more for marketing campaigns. SalesGenie also comes with a short free trial, so you can experiment with it even if your library doesn't subscribe.
Up to three people on their PCs can use the browser to video chat and even share screens, all without fees or any setup other than sharing a URL. Sign up for an account or sign in with your Google or Facebook accounts, and you can claim a regular-to-use meeting "room" online. Because it's Web based, it works for Linux, Mac, or Windows, even on a Chromebook.
Usually referred to as SEO (Search Engine Optimisation); tools such as SEMrush, Moz, Raven, and Ahrefs help you achieve a strong organic ranking in search engines. This isn’t an approach due to lots of competition, and it can take some time before you achieve any real exciting results. Using a combination of competitive and long tail keywords, you can increase your website traffic as well as increase conversions on your website. Google Analytics can be used to monitor how your traffic levels are doing.
Up to three people on their PCs can use the browser to video chat and even share screens, all without fees or any setup other than sharing a URL. Sign up for an account or sign in with your Google or Facebook accounts, and you can claim a regular-to-use meeting "room" online. Because it's Web based, it works for Linux, Mac, or Windows, even on a Chromebook.
In 2006, OpenBSD started the first campaign against the use of binary blobs in kernels. Blobs are usually freely distributable device drivers for hardware from vendors that do not reveal driver source code to users or developers. This restricts the users' freedom effectively to modify the software and distribute modified versions. Also, since the blobs are undocumented and may have bugs, they pose a security risk to any operating system whose kernel includes them. The proclaimed aim of the campaign against blobs is to collect hardware documentation that allows developers to write free software drivers for that hardware, ultimately enabling all free operating systems to become or remain blob-free.
It's not super popular in the US and not even our favorite messaging app, but you can't ignore the 800-pound messaging gorilla that is WhatsApp—since it was purchased by Facebook for almost $20 billion and it has over a billion users worldwide. It offers end-to-end encryption, has animated GIF support, group chat for up to 256 people, document sharing, voice and video calls, one-tap voice messages, and a Web-based interface you access by scanning a QR code with the app on your mobile device. It recently added macOS and Windows desktop versions. 

For reference, see OSI FAQ : "How is 'open source' related to 'free software'? The Open Source Initiative is a marketing program for free software. It's a pitch for 'free software' on solid pragmatic grounds rather than ideological tub-thumping. The winning substance has not changed, the losing attitude and symbolism have." Outside this rather unkind FAQ item, the OSI and its supporters have generally avoided the term "Free Software".
Scroll down the page and look for the "Fit-Flex Underwear for Women" offer and access the "Get a free sample" link and fill out the form to request a sample of this product, which offers "classic underwear-style protection with a range of sizes to fit your body." You can receive your choice of either a small/medium or large/extra large underwear sample. (U.S. only).
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