Your own 3D parametric modeler

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Freedom to build what you want

FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.

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Create 3D from 2D & back

FreeCAD allows you to sketch geometry constrained 2D shapes and use them as a base to build other objects. It contains many components to adjust dimensions or extract design details from 3D models to create high quality production ready drawings.

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Accessible, flexible & integrated

FreeCAD is a multiplatfom (Windows, Mac and Linux), highly customizable and extensible software. It reads and writes to many open file formats such as STEP, IGES, STL, SVG, DXF, OBJ, IFC, DAE and many others, making it possible to seamlessly integrate it into your workflow.

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Designed for your needs

FreeCAD is designed to fit a wide range of uses including product design, mechanical engineering and architecture. Whether you are a hobbyist, a programmer, an experienced CAD user, a student or a teacher, you will feel right at home with FreeCAD.

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And many more great features

FreeCAD equips you with all the right tools for your needs. You get modern Finite Element Analysis (FEA) tools, experimental CFD, BIM, Geodata workbenches, Path workbench, a robot simulation module that allows you to study robot movements and many more features. FreeCAD really is a Swiss Army knife of general-purpose engineering toolkits.

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Want to contribute to FreeCAD?

FreeCAD is a truly open source project and if you would like to help fix bugs, implement new cool features or work on the documentation, we invite you to join us and create a software that benefits the whole community.

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Google Earth Engine

A planetary-scale platform for Earth science data & analysis

Powered by Google’s cloud infrastructure

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Meet Earth Engine

Google Earth Engine combines a multi-petabyte catalog of satellite imagery and geospatial datasets with planetary-scale analysis capabilities and makes it available for scientists, researchers, and developers to detect changes, map trends, and quantify differences on the Earth’s surface.

Satellite imagerysatellite imagery+Your algorithmsyour algorithms+Causes you care aboutreal world applications learn more

Global-scale insight

Explore our interactive timelapse viewer to travel back in time and see how the world has changed over the past thirty-five years. Timelapse is one example of how Earth Engine can help gain insight into petabyte-scale datasets.

Ready-to-use datasets

The public data archive includes more than thirty years of historical imagery and scientific datasets, updated and expanded daily. It contains over twenty petabytes of geospatial data instantly available for analysis.

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Simple, yet powerful API

The Earth Engine API is available in Python and JavaScript, making it easy to harness the power of Google’s cloud for your own geospatial analysis.

explore the API

Google Earth Engine has made it possible for the first time in history to rapidly and accurately process vast amounts of satellite imagery, identifying where and when tree cover change has occurred at high resolution. Global Forest Watch would not exist without it. For those who care about the future of the planet Google Earth Engine is a great blessing!

-Dr. Andrew Steer, President and CEO of the World Resources Institute.

Convenient tools

Use our web-based code editor for fast, interactive algorithm development with instant access to petabytes of data.

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Scientific and humanitarian impact

Scientists and non-profits use Earth Engine for remote sensing research, predicting disease outbreaks, natural resource management, and more.

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Ready to be part of the solution?

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SUMSearch 2

Connect search terms with ‘AND’.

– – Please click once.

Highlights: SUMSearch simultaneously searches for original studies, systematic reviews, and practice guidelines from PubMed. Searches for studies are revised up to 6 times as needed, while guidelines and systematic reviews may be revised once each. As SUMSearch executes live searches of external websites in response to your query, SUMSearch is always up-to-date.

Changes from v1: 1) faster; 2) search strategies are validated; 3) automated summaries are provided as well as bilbiometric markers of article quality; 4) Guidelines from PubMed, 5) systematic reviews from PubMed.

History: SUMSearch is written by Bob Badgett was first online as “Medical SmartSearch” in October, 1998. SUMSearch was moved to SUMSearch 2 in August, 2010.

More: BibliographyChange log.


concrete5 is a free CMS Open Source Content Management System

In 2003 we built Concrete CMS to power pixel perfect websites for our own web shop serving national brands. This wasn’t a blog tool, news site or some other type of solution. Concrete was designed from the start as a flexible building material for a small team pleasing demanding clients.


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Dogpile Web Search – Is Dogpile Seach Engine and Toolbar Safe To Use?

What is Dogpile?

Dogpile is a metasearch engine that fetches results from several major search engines and directories and afterward introduces the combined modified results to the user.

Dogpile web search aims to generate improved results from Google, Yahoo,, Bing, and other popular search engines. It may seem legitimate but is a browser hijacking application which ultimately aims at harming the machine.

Why Dogpile is categorized as a Browser Hijacker (Redirect Virus)?

Dogpile search engine is a malicious program which infiltrates the security-vulnerable system and installs viruses, adware, and PUPs without the user’s authorization. is a suspicious search engine which often comes bundled with other freeware or shareware program that you download from the Internet.

Because of its tricky distribution strategy, the capacity to change browsers’ settings and other lawful activities, this program is known as a browser hijacker.

To know more about browser hijacker and how to protect your computer from browser hijacker click here.

Followed by invasion, it attacks all major Internet browsers including Internet Explorer, Google Chrome, Safari, and Mozilla Firefox and hijacks their homepage, default search engine to display malicious ads and keeps a track on your browsing activity.

After getting inside your system, the hijacker will change the default homepage and search engine to or private and it leaves no clue to the user about the existence of malware in their device.

These search results are typically loaded with predetermined links, pop-up ads and banners that are shown for one primary reason – attempting to redirect individuals to associate sites and after that assistance those to build their page rank or sales. Be that as it may, there is one major issue with this redirect virus. You can never recognize what sort of site is advanced with the assistance of such strategy.

The investigation group from Croatia calls attention to that Dogpile may redirect to extremely suspicious sites that might be utilized for spreading other blurred programs. Additionally, you may also wind up on phishing technical support scam or contaminated websites.

Therefore, using this program isn’t prescribed.

At long last, infection may endeavor to gather information that is identified with your browsing. Regularly, such projects are keen on individuals’ search terms, most went by sites and information that they enter when going by them. In light of the cumulative data, this potentially unwanted program (PUP) may convey targeted ads too.

In addition, a portion of the accumulated data may also be shared with advertising network and to third-party as well. Hence, you should pick up the pace with removal to shield your privacy and program from irritating ads/promotion assault. It is highly recommended to remove redirect virus from your PC as soon as possible.

 Also Read: Pro Tips to Make Your Computer More Secure

Dogpile vs Google Search – Is It Worth to Leave Google for a Metasearch Engine?

Google, the supreme ruler of Internet-related services and search engine, does have competition, although none seem to be a threat to its number one position.

Dogpile is a metasearch engine that compiles results from various other search engine and then presents the combined results to the user.

After an analysis of results by both search engines, one can come to the conclusion that you’re better off using Google.

Dogpile’s search results have too many hidden sponsored ads and will get on your nerves with fake free iPhone offers or commercial advertisements; as a result, you will face frequent redirects to malicious and deceptive domains.

Even though Dogpile uses multiple search engines, you have to go through pages and pages of listings to find the nonpaid, more legitimate links.

Also Read About: What is Zapmeta? Is it safe to use?

Why do you end up on

The browser hijacker causes this redirects to the target portal or website, this is one of its many symptoms. If you look closely at the address bar, you will find that your default search engine has changed, although it would look like the default search engine.

Targeted Web Browser

  1. Google Chrome
  2. Mozilla Firefox
  3. Internet Explorer
  4. Opera
  5. Safari
  6. MS Edge

Is redirect virus harmful, can it corrupt your system data?

No, the redirect will not cause any harm to your files or operating system. Although, it will certainly annoy you with frequent redirection to malicious websites, notifications, and ad popups. Never forget it is a malicious program, and the longer it stays on a computer, the more it weakens the firewall of the network making way for another malware.

That’s not it Adware/redirect connects your PC to “Control and Command Centre” which is operated by the hackers and using adware they can steal your confidential files, IP-address, your location, browser type, Operating System details, etc.

How Does ‘’ Redirect Virus Get Inside Your PC?

  • Bundling:

The quickest and the most relaxed way of infecting a user’s PC with any malware is through freeware software’s, and in this case, the user is equally responsible for authorizing the installation of such malicious program without reading the terms and conditions. Unfortunately, some freeware programs do not uncover that a malicious program will also be installed with it.

Creators of such infections use online media such as Social Network and tempting advertisements to provoke or let us say in fooling the users to click on the ads, i.e., Update your flash player or win an iPhone.

  • Spam emails:

These hijackers can get into your computer through malicious email attachments, and download links present the body of the mail. This emails usually appear to be from a reputed organization, i.e., Banks and insurance companies.

  • It can infect the computer through infected websites or malicious websites.
  • It can also trick you with fake security alert or system updates.
  • Torrents & P2P File Sharing:

Torrents and files shared on P2P networks have a high probability of being a carrier to such infections.

  • It can also infect the computer through portable storage devices like USB stick, portable hard drive or through a disk.

How do I know if I have Dogpile Redirect Virus installed on my PC?

  1. Unstable behavior of the browser, frequent crashes.
  2. Default home page of the browser will get changed.
  3. Your web browsers are now equipped with all new add-ons toolbars and extensions.
  4. Every time you go online for some searching you get redirected to the target portal or to fake security warning which would want you to download a program to fix your computer.
  5. Poor system performance, slow response time as the advertisement would pop out of nowhere on the screen even when the browser is disabled.
  6. Slow internet browsing speed or internet would stop unexpectedly.
  7. The operating system would crash now and then, or computer would boot up for no reason.
  8. Redirect virus gradually weakens the security of the computer authorizing the installation of other malware programs.
  9. New icons will get added, or suspicious applications appear on the desktop screen out of nowhere.
  10. Specific system setting and browser settings are disabled or changed.
  11. Pop up ads will appear on the screen even when the browser is not open.
  12. New tabs open in browser to display ads or search results would always end up with displaying advertisement banners.

How to avoid the “” redirect virus?

The main reasons targets because users have inadequate knowledge and careless behavior regardless of the virus presents in their system. Therefore, be very watchful when surfing the Internet and, especially while downloading/installing any software. Cybercriminals invest many resources into intrusive ad design. Do not click too fast on the Next button during the installation process of any software.

Therefore, maximum look legitimate, however, they are distinguishable for their redirection – mostly leads to gambling, adult dating, survey, and other dubious sites. If you encounter any redirection to similar websites, uninstall all rogue applications and browser extensions. Furthermore, carefully analyze each download/installation step to cancel all additionally-included programs. 

To minimize the risk of malware infection, always treat such malicious programs with skepticism.

Frequently Asked Questions (FAQs)

  • Is Dogpile a good search engine?

Answer: Yes, it is a useful search engine, and Dogpile’s image search, audio video search, news, and advanced search features aim to provide the best-optimized results to the user.

  • Which search engine should I use – Google or Dogpile?

Answer: Well, the short answer is – Google. Despite the Dogpile’s various search engine results, Google does a far better job at finding what you want on the Internet.

  • Is Trivago a Meta search engine?

Answer: Yes, Trivago is a metasearch engine that provides the best-optimized search results for all OTA’s connected to it and claims to offer the lowest price to its customers.

Tips to Prevent virus and malware from Infecting Your System:
  1. Enable your popup blocker: Pop-ups and ads on the websites are the most adoptable tactic used by cybercriminals or developers with the core intention to spread malicious programs.
    So, avoid clicking uncertain sites, software offers, pop-ups etc. and Install a powerful ad- blocker for ChromeMozilla, and IE
  2. Keep your Windows Updated: To avoid such infections, we recommend that you should always keep your system updated through automatic windows update.By doing this you can keep your device free from virus.According to the survey, outdated/older versions of Windows operating system are an easy target.
  3. Third-party installation: Try to avoid freeware download websites as they usually install bundled of software with any installer or stub file.
  4. Regular Backup: Regular and periodical backup helps you to keep your data safe in case the system is infected by any kind of virus or any other infection.Thus always backup important files regularly on a cloud drive or an external hard drive.
  5. Always have an Anti-Virus: Precaution is better than cure. We recommend that you install an antivirus like ITL Total Security or a good Malware Removal Tool like Download Virus RemovalTool


Starfield Received a ‘Major Engine Rewrite’ for Next-Gen Consoles

Larry Hryb’s latest episode of the Major Nelson podcast brought together Xbox boss Phil Spencer and Bethesda’s Todd Howard and Pete Hines in the first interview sinceXbox announced it acquired Bethesda. And while the respective company heads still kept a lot of details close to the chest, there were some details about the upcomingStarfieldand what the union means for the two companies.While Hryb primarilyasked his panelof guests about the blockbuster deal where Xbox acquired all of ZeniMax Media — which includes Bethesda and studios like Arkane — Hryb did have a surprise question about the upcoming Starfield for Todd Howard.

Hryb asked Howard if there is any new information the Bethesda game director could share about Starfield, the studio’s long-in-development space RPG. While Howard refrained from sharing too much, he did reveal that the project will be a “major engine rewrite” which will utilize the next-gen systems.

“The people all know me, I like to wait as long as possible to show stuff so uh, we’re closer to show stuff than we were at the beginning of the conversation,” Howard joked.LoadingBethesda’s Creation Engine was the focus of some controversy back in 2018 when Howard revealed its next-gen games like Starfield and Elder Scrolls 6 would be using the studio’s proprietary game development tool. Though engines aren’t static and are upgraded with new features and tools regularly.

Other topics that were discussed include how the deal between Xbox and ZeniMax even happened, but Xbox boss Phil Spencer reiterated that it was all based on the long relationship between the two companies.

“For us there’s this long-standing relationship of what does it mean for [Bethesda] to build what they’re trying to build on top of our platform that makes, in many instances, us feel like one team,” Spencer said.

Confirmed Xbox Series X Games

When asked if Spencer had any closing thoughts, he responded, “At a fundamental level our goal with every move that we make at Team Xbox is to enable you to play the games you want to play with the people you want to play with and where you want to play them.”

Spencer added, “I just want people to know that these kinds of partnerships, these kinds of steps whether it’s a technology move or a partnership move with a studio like Bethesda, are all just about furthering our vision there. Of allowing more people to play, giving creators the best place to build the most amazing things they can build, and find the largest audience they can.”

For more on the Xbox ZeniMax acquisition, check out IGN’s top takeaways from the deal, and our special Unlocked discussing the developments.

Matt T.M. Kim is a reporter for IGN.


ZDoom – Downloads

ZDoom now comes in multiple flavours! The primary port, GZDoom, sports advanced hardware (OpenGL) and enhanced software rendering capabilities, while the port LZDoom serves as an alternative with a different feature set, detailed below. Although the parent ZDoom codebase has been discontinued, the latest official release is available here for posterity.

GZDoom is the latest version targeting current systems with modern graphics hardware. (Vulkan/OpenGL 4.5 capability recommended, but the minimum requirement for the hardware renderer is OpenGL 3.3, the minimum for the software renderer is Direct3D 9)

LZDoom is based on an older version of GZDoom. It does not provide all features currently supported by GZDoom but in turn is capable of running the hardware renderer on older hardware which does not support modern OpenGL features.

Want more features? Get more out of GZDoom! The release builds are not all that GZDoom has to offer. If you want to stay ahead of development, try out some Dev Builds and be the first to try out the newest features in development, before everyone else does! In doing so you can help to ensure releases are smoother, by reporting any bugs that you may find! LZDoom Builds also available!

For help getting started, see the online documentation in the wiki. You need to provide your own game IWAD. If you do not have a copy of a doom-engine game, the easiest way to obtain them is to purchase them from Steam or GOG. When you download them from either of these stores, ZDoom will automatically find them.


Nvidia Open Sources Physics Engine

Nvidia has released a new version of its physics engine, PhysX, and has made it open source. The developers say the engine has been upgraded to provide industrial grade simulation quality at game simulation performance.

PhysX was already available for use for free, even in commercial projects, but the fact it is now open source means developers can modify the engine if they want to without paying a license fee.


PhysX is part of the Nvidia GameWorks software suite, having been originally developed by NovodeX and acquired by Nvidia as part of a takeover. Nvidia then enabled PhysX hardware acceleration on its GeForce graphics cards. Games that use it can rely on the card carrying out physics calculations rather than the CPU needing to do them. PhysX can handle operations such as explosions that create dust and debris, better joints on characters so they move in a more lifelike fashion, or special effects for weapons.

Nvidia says that running PhysX on a mid-to-high-end GeForce GPU will enable 10-20 times more effects and visual fidelity than physics running on a high-end CPU.

The new version has a number of new features, starting with a  Temporal Gauss-Seidel Solver (TGS), which makes machinery, characters/ragdolls, and anything else that is jointed or articulated much more robust.

The developers have also improved the overall stability with reduced coordinate articulations and joint improvements. There are also new filtering rules for kinematics and statics that the developers say also improves stability.

Other improvements include new bounding volume hierarchies that support fast scene queries for actors with a huge number of shapes; and the infrastructure can now incorporate Cmake projects.



More Information

PhysX Website

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Google opens the source for its robots.txt parser in Java and testing framework in C++

Last year, Google open sourced the code for the robots.txt parser used in its production systems. After seeing the community build tools with it and add their own contributions to the open source library, including language ports of the original parser written in C++ to golang and rust, Google announced this week it has released additional related source code projects.

Here’s what’s new for developers and tech SEOs to play with.

C++ and Java. For anyone writing their own or adopting Google’s parser written in C++ (a super fast compiled language), Google has released the source code for its robots.txt parser validation testing framework used to ensure parser results adhere to the official robots.txt specification as expected, and it can validate parsers written in a wide variety of other languages.

Additionally, Google released an official port to the more popular Java language. Modern Java is more widely used in enterprise applications than C++, whereas C++ is more typically used in core system applications where performance needs demand it. Some Java-based codebases run applications today for enterprise SEO and or marketing software.

Testing and validation. Requirements for running the test framework include JDK 1.7+ for Apache Maven, and Google’s protocol buffer to interface the test framework with your parser platform and development workstation. It should be useful to anyone developing their own parser, validating a port, or utilizing either of Google’s official parsers, and especially for validating your development of a port to a new language.

How difficult would this be to use? We should note these are relatively approachable intern-led projects at Google which ought to be consumable by moderate to higher level programmers in one or more of these languages. You can build a robots.txt parser using practically any programming language. It adds perceived authority, however, when your marketing application runs the exact same parser that governs Googlebot.

Why we care. If you, or your company, has plans to write or has written a crawler which parses robots.txt files for directives looking for important information (not just) for SEO, then this gives you incentive to evaluate whether using Google’s parser in C++, Java, or one of the other language ports is worth it. The Java parser in particular should be relatively easy to adopt if your application is already written in Java.


Noted scholar to give virtual talk on racism in search engines – News

Erin LinkSeptember 22, 2020Milner LibraryDr. Safiya Umoja Noble

Dr. Safiya Umoja Noble Photo Credit: John Davis

Best-selling author and associate professor at UCLA Dr. Safiya Noble will give a virtual talk titled Algorithms of Oppression: How Search Engines Reinforce Racism at 12:30 p.m. on Wednesday, October 21, over Zoom. Noble’s talk will be a part of Open Access Week 2020 activities held by Milner Library. This talk will be recorded and will be available to members of the Illinois State University community through the end of the fall semester. If you are unable to attend the live event and would like to request access to the recorded event, please email

Noble is the author of a book on racist and sexist algorithmic bias in commercial search engines, entitled Algorithms of Oppression: How Search Engines Reinforce Racism (NYU Press), which has been widely-reviewed in journals and periodicals including the Los Angeles Review of Books, and featured in the New York Public Library 2018 Best Books for Adults (non-fiction).

In her recent best-selling book Algorithms of Oppression, Noble challenges the idea that “Big Tech” offers an equal playing field for all forms of ideas, identities, and activities. Her work argues that the combination of private interests, along with the monopoly status of a relatively small number of internet companies, leads to a limited understanding of how racism is created, maintained, and disseminated in everyday digital engagements. Data discrimination is a real social problem. In this talk, Dr. Noble will discuss her book and the impact of marginalization and misrepresentation in commercial information platforms like Google search, as well as the implications for public information needs. Two people in a drawing below a light bulb that is on

Noble is an associate professor at the University of California, Los Angeles (UCLA) in the Department of Information Studies, where she serves as the co-director of the UCLA Center for Critical Internet Inquiry. She is regularly quoted for her expertise on issues of algorithmic discrimination and technology bias by national and international press including The Guardian, the BBC, CNN International, USA Today, Wired, Time, The New York Times, and a host of local news and podcasts, including Science Friday. Noble holds a Ph.D. and M.S. in library and information science from the University of Illinois at Urbana-Champaign, and a B.A. in sociology from Fresno State University.

Alogorithms of Oppression: How Search Engines Reinforce Racism

Dr. Safiya Umja Noble
12:30 p.m., Wednesday, October 21
Join via Zoom

This talk will be recorded and will be available to members of the Illinois State University community after the event. If you are unable to attend the live event and would like to request access or would like an Outlook calendar invitation sent with Zoom information, please email

About Open Access Week

Noble’s keynote lecture is sponsored by Milner Library in celebration of Open Access Week 2020. Additional information on Open Access Week 2020 activities will be available soon. For more information on Noble’s talk or Open Access Week, please contact Milner Library Director of Communication Erin Link at or by phone at (309) 438-3897.