SuperNZB is an NZB-file downloader for Windows and Mac OS X. It will open your NZB files, download from your Usenet server, and automatically run PAR and RAR to extract the files.
Download SuperNZB for Windows 10
Download SuperNZB for macOS
Make sure to have an NZB file on hand!
Mac users: Download with Apple’s Safari browser if your current browser doesn’t understand DMG files.
NZBVortex for Mac OS v.1.0 The small and efficient NZB client, optimized for performance and ease of use.NZBVortex is very fast in comparison to other usenet clients because it will try to minimize the download size and has very fast postprocessing. NZBVortex will not only. Ganglia for Mac OS v.3.1.2 A Intel binary build of the Ganglia. Download Usenet Browser Mac Software Advertisement UseNeXT Client v.5.28 UseNeXT offers very fast, anonymous and uncensored access to Usenet - the mother of all file sharing services.
The links above are for the newer 64-bit version of SuperNZB. If you still want to run the 32-bit version, you can download it here.
SuperNZB-64 v1.0.1 has been tested on Windows 10 and macOS Sierra, but should work on other 64-bit versions of Windows and macOS.
64-bit
You need a 64-bit computer to run SuperNZB-64, but don’t worry, if you bought your computer during the past few years, it is probably 64-bit. Click here to find out if your computer is 32-bit or 64-bit.
SuperNZB-64 is about twice as fast as the original 32-bit app, though performance varies depending upon the speed of your computer, internet connection, and Usenet server. For example, if you have a fast computer and a slow internet connection, you might not see much difference. But if you have a fast connection, you should see a sizeable difference. Let’s look at an example:
This test was run on a Windows 10 system downloading a 7.57gb NZB file over a 16Mbps internet connection.
SuperNZB 32-bit speed: 2:22:10
SuperNZB 64-bit speed: 1:35:33
So, that’s 47 minutes faster, or 67%. (This test included downloading, PARing, and RARing.)
In this particular case, no PAR repair was needed. But if it were, the speed difference would have been much greater. To test it, we removed one of the RAR files, and then used SuperNZB’s PAR window to restore it:
SuperNZB 32-bit speed: 00:12:58
SuperNZB 64-bit speed: 00:05:57
So, that’s more than twice as fast.
RAR processing is only a little bit faster because it is disk intensive.
Upgrading
After the first version of SuperNZB was released on January 13, 2006, we released 33 free upgrades. However, this version is not free unless you are a recent buyer (see below). While the app’s interface is the same, re-engineering it to 64-bit required major surgery, and a lot of tricky coding. So, we do need to charge for it. You can order the Windows version on this page, and the Mac version on this page.
If you bought SuperNZB after January 1, 2016, send an email to the address at the bottom of the support page, and we will send you a free key.

Missing DLL Error
Some users have reported this error message:
“The program can’t start because api-ms-win-crt-runtime-|1-1-0.dll is missing from your computer.”
Apparently, you can get this when you are running an older version of Windows and not allowing operating-system updates. Fixing it requires installing a thing called the Universal Runtime. For some background reading on the subject, see this page.

Links
Go to the SuperNZB help page.

SuperNZB Technical Specifications.
Step-by-Step Guide to NZB Files.
Click here if you are upgrading from an older version.
SuperNZB’s Downloader
SuperNZB’s Downloader Window can be opened from the File Menu.
The list of Usenet servers that you see on the Downloader is created when this window opens up. It looks at the servers you have set up on the Servers window, sees which ones are “active” and then uses the “connections” number to create the list.
Each line you see is a “connection” and each server will usually have more than one connection. SuperNZB takes the server name you entered, and then adds a dash, and a number for each connection to create the server name you see here. So, if you have entered the TechSono server with five connections, you will see:
If you change something on the Servers window, you must close the Downloader and then re-open it to see the changes. You can turn a connection on-and-off while the Downloader is running via the check-box at the left.
The State column shows what the connection is doing. First, it connects to the server, then it sends your username, then your password, then asks for a post, receives a post, etc.
The Errors column shows the number of errors the server has returned on that connection. These are server & handshaking types of errors, and don’t indicate whether or not the file being downloaded is corrupt. They are usually nothing to worry about, but are an indication as to how reliable the server is. Read more on the Error Handling page.
The MB column shows the total number of megabytes downloaded by that connection.
The Speed column shows how fast the current post is being downloaded. This usually starts out slow and then increases since there is some time-consuming handshaking that must go on as SuperNZB asks the server for a post.
Next to the Speed column are progress bars, which show you how much of the current post has downloaded as a percentage. Half-way means 50%, etc.
Usenet Newsreader Mac
To the right of the progress bars is a message area where SuperNZB will tell you some further details about what the connection is doing.
The combined speed number is the overall speed of all the connections put together. Ideally, this number will hit, and slightly exceed, the rated speed of your internet connection. Your ISP may be able to boost your speed without you having to do anything, or even telling you they have done so. Sometimes you will need a new modem to take advantage of their faster service, so it pays to call them from time-to-time and see what the latest deal is. If SuperNZB isn’t going as fast as you would like, you can add more Usenet servers by subscribing to a service such as Easynews.
To see further stats, open the Stats window from the File menu.

When you click the Stop button, SuperNZB will finish the posts it is working on before logging off of the connection so as not to waste any data.
Test Your Usenet Server
To investigate connection problems to your ISP’s Usenet server, go onto SuperNZB’s “Help” menu and then to “Test News Server.”

Select the server in question from the pop-up list, and then click the Connect button. You can copy-and-paste any error messages and send them to your Usenet Service Provider. The lines that begin with an arrow show the command that SuperNZB is sending to the server. The line below a command is what the server has returned in response.
For commands where the server sends more than one line, such as the “help” command, you must look for a period on a line by itself – that will be the last line that the server sends.
If you made a typo when setting up the server, close the Test Server window first before correcting the typo on the Servers window. The Test Server window will not automatically pick up changes made on the Servers window, so you have to close it, and then re-open it, to test again.
If you can connect successfully, send the “help” command, and get back the list of commands from the server, then everything is working properly. However, during this process, you are only talking to the main server. A large server farm will have many computers, and if one of them is malfunctioning, you won’t get an error message until you try to access one of the newsgroups stored on that server. So, what you need to do is use the “Group” command like this:
group alt.fan.howard-stern
The server should send back a response like this:
211 566032 497526 1063557 alt.fan.howard-stern
If you don’t see something like that, send whatever the server responds with to your Usenet Service Provider. They will want the exact text of the error message so that they can track down the problem.
Manual Pages
Use SuperNZB for free.
Newsreader For Mac
SuperNZB contains a free RAR file decoder, a free PAR & PAR2 file decoder, and a free SFV file checker.
- Advertisement
- UseNeXT Client v.5.28UseNeXT offers very fast, anonymous and uncensored access to Usenet - the mother of all file sharing services. With UseNeXT's unique software, you get an easy-to-use access to Usenet, that used to be so complicated that only internet experts could ...
- Usenet Web Gateway v.b1.01Perl software that allows users to read Usenet messages and post messages using only a web browser. Deja.com and others offers such a (non-GPLed) gateway between Usenet and the ...
- QtWeb Internet Browser v.3.7QtWeb is a fast, compact, portable and secure internet browser with some unique user interface and privacy features. QtWeb is free, non-commercial and open source project based on Qt framework and WebKit rendering engine. Built-in Torrent client.
- Flock, The Social Web Browser v.3.0Flock, The Social Web Browser built for facebook and twitter. Share web pages, photos, and video. Update your status and make comments from anywhere on the web.
- Browser Cleaner v.7.0Browser Cleaner is a complete solution for cleaning Internet activities and traces of your PC. this Browser Cleaner cleans up your browser's cache, cookies, history, and recent-document list automatically. With this Browser Cleaner you can clean the ...
- MM3-WebAssistant - Proxy Offline Browser v.2017Archives visited web pages with your browser to be used online and offline. Offline each page is available with its original URL. You can even use your bookmarks offline. There is no difference between surfing the internet and surfing the archive.
- Cosmos Globalbase Browser for Mac OS v.ver.B.b17.12The GUI geo-browser for seamlessly browsing in the sea of the distributed geographical information spread over the internet (Globalbase server network). Including contents are different kind from Google Earth or the other systems. For example, old ...
- KidZui K2 Browser for Mac OS v.6.0Feed your childs curiosity and expand on their interests in a fun, engaging, and safe online environment with KidZui, the Internet for kids. KidZui is a free web browser that is stuffed with millions of kid-friendly games, websites and videos. Real ...
- MM3-WebAssistant - Proxy Offline Browser - Pro v.2017Archives visited web pages with your browser to be used online and offline. Offline each page is available with its original URL. You can even use your bookmarks offline. There is no difference between surfing the internet and surfing the archive.
- SuperBird Browser v.22.0Superbird is a free browser with special emphasis placed on speed, stability and data security.
- Titan Browser v.1.0Titan Browser is a browser that combines a minimal design with sophisticated technology to make the web faster, safer, and easier.Titan Web Browser is a new, fast, secure and anonymous web browser. We have partnered with Yahoo to provide a fast.
- Indigo Browser v.1.0A simple browser with great tips for how to create natural healthy living.
- Citrio browser v.36.0.1985.241Citrio is an ultimate browser for Windows and Mac. With Citrio you can fully enjoy fast and effective search. It has an inbuilt download manager, video grabber, proxy widget and much more. Citrio is absolutely free and easy to use.
- Maiar Browser v.80.0.1.43Maiar is an extremely fast and privacy-friendly browser for the modern web. It loads major websites 2-8 times faster than Chrome and Safari. Maiar can block ads without modules or extensions.
- Adobe Photoshop 7 File Browser v.1.0The File Browser Update plug-in increases the stability of the File Browser in Photoshop 7 running on Mac OS X version 10.2 or later. It addresses a specific issue that could occur when browsing a large number of files in a single ...
- Adobe Photoshop File Browser v.7.0The File Browser Update plug-in increases the stability of the File Browser in Adobe Photoshop 7 running on Mac OS X version 10.2. This plug-in addresses a specific issue that could occur when browsing a large number of files in a single ...
- Blackbird Web Browser v.0.9Blackbird Web Browser 0.9 is safe to download and secure (powered by Mozilla, which powers some of the most popular Internet browsers). It elevates content and information of interest to the community of users. Blackbird changes the web browsing ...
- Browser KickStart v.1.0.6Add your favourite links to BKS for fast access. BKS runs on your local machine, and every time you open your browser your favourite links are listed in order of 'most often used'. One click allows you to open your favourite site, or an unlimited ...
- Desktop Web Browser v.4.0Desktop Web Browser 4.0 proves itself to be a useful tool which allows you to navigate the internet and to display webpages directly from the desktop of the ...
- Kudlian Media Browser v.1.0.0Kudlian Media Browser 1.0.0 is developed to be a useful program with which you can display all your photos, images, movies and music on your Macintosh. It can also be configured to search for media in other folders.The media files can be drag and ...
- Maiar Browser Maiar is an extremely fast and privacy-friendly browser
- Titan Browser Titan Browser is a browser that combines a minimal
- MM3-WebAssistant - Proxy Offline Browser - Archives visited web pages with your browser to be used
- Flock, The Social Web Browser Flock, The Social Web Browser built for facebook and
- QtWeb Internet Browser QtWeb is a fast, compact, portable and secure internet
- Citrio browser Citrio is an ultimate browser for Windows and Mac. With
- Tor Browser Bundle Tor is a software project that helps you defend against
- SuperBird Browser Superbird is a free browser with special emphasis placed
- MM3-WebAssistant - Proxy Offline Browser Archives visited web pages with your browser to be used
- KidZui K2 Browser for Mac OS Feed your childs curiosity and expand on their interests in