Netscape 4 For Mac


Notes on using Java applets in browsers

  1. Netscape 4 For Mac Download
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This is Netscape's final release for Mac OS 9. Based on the Mozilla platform introduced in version 6, it renders modern websites far better than any other OS 9 browser. There's an occasional graphical glitch here and there, but it won't stack 16 images on top of eachother and delete half the text like IE and Netscape 4 will sometimes. Netscape 4.x - do not use!! Netscape 6 and 7 - install Apple Classic MRJ version 2.2.5 or later and enable Java. Some say it is better to install the MRJ before installing Netscape. Internet Explorer - enable Java and choose the Apple MRJ Mac OSX Comes with Java installed. Please be sure you have the latest update from Apple. Netscape Communicator 4.8 (Mac abandonware from 2002) To date, Macintosh Repository served 1248364 old Mac files, totaling more than 237436GB! The Netscape Browser makes remembering your site passwords and filling out information forms on site simple. With Live Content you have one-click access to information important to you. Netscape is property of Netscape, Inc. Updates: Netscape for Mac Updates.

updated: March, 2014 Test your browser's Java version by clicking here
Security changes in Java version 1.7.0
If you have installed this version of Java or the Java plug-in, you will only be ableto run applets from sites that have created 'signed versions' of the applets. Many, butnot all of our applets have been converted and/or repackaged.

Regardless, you will still get a 'Security Advisory' pop-up that will require you to agreeto run the applets. While you may change the security level in the Java Control Panel,this is not advised.

If you upgrade to Firefox to version 3.6 or later...
You must install the Java 1.6.0_10 plug-in or later applets simply will not work! Wehave also found that you might need to clear out the Java cache ('Temporary Internet Files')using the Java Console.
Upgrade to Java 1.5 or 1.6 (version 1.6.x is preferred) -- BUT, beware the cache size!
For security and performance reasons, it might be a good time toupgrade to Java 1.6....however, it is very important to go into theJava Control Panel, and set the cache size to something reasonable!(In Java 1.5, the default is 'unlimited', in Java 1.6 it is a GB!).

There are also issues coming to light regarding the amount of memory available forthe Java Plug-in to use...which can even cause the plugin not to start. Please refer to thispage for information on changing the values.

Important information regarding Java version 1.4.1 (May, 2003)
Try not to use Java version 1.4.l - it has significant problems with layouts ofwidgets and screen refreshing. If that version is installed in your browser, I recommendstrongly that you revert back to version 1.3.1 or install 1.4.2...orjump to 1.5.
Information about Microsoft's support for Java - April, 2004
You might be interested in reading this page, and consider using the SunJVM, as noted at the bottom. If you cannot use the Sun JVM and still have problems, you mightconsider trying to turn off the Microsoft VM's 'JIT' -- Click here for details.

While we make every effort to keep our applets compatible with thevarious versions of Java available in common browsers, you might attimes experience some difficulties. Here are some of our tips andnotes that we hope will be helpful. If, after reading and trying outthis information, you still have difficulties, please write to TomWhittaker (tomw at Thanks!

General Instructions for enabling Java

  • Firefox: Tools -> Options (in some, this is Edit -> Preferences) and then under theContent tab, check 'Enable Java'
  • Mozilla and Netscape 4.x: Edit -> Preferences -> Advanced and then check 'Enable Java'
  • Internet Explorer 5.5 and 6.0:
    • Windows and Linux:Tools -> Internet Options -> Advanced and then select either the 'Microsoft VM' or the 'Java Plug-in'
      then do....
      Tools -> Internet Options -> Security -> CustomLevel... then scroll down to make sure Java is enabled
    • Mac: On the 'task bar', Internet Explorer -> Edit -> Preferences -> Web browser -> Java and then Under 'Java options', check the 'Enable Java (Apple MRJ)' box
  • Opera: File -> Preferences -> Multimedia and then check'Enable Java'

What to do if you have a problem

The first thing to do is to find the 'Java Console' and open it. This may belocated in the 'View' menu, the 'Tools' menu, or the 'Web Development' menu,depending on your browser. If you are using the Java Plug-in, then youcan also launch the Java Console by clicking (sometimes right-clicking) on theJava icon when you try to run the applet.

If you have error messages in the Java Console, these will be very helpful tothe software support people, and you should consider sending the text in theJava Console to them.

General Information on the Java Runtime

Try to use the Sun Java Plug-in whenever possible.If you experience an 'out-of-memory' error, or receive messages about 'multiple instances ofJava running', please refer to thispage and adjust the 'heap space' memory
  • Windows

    • Netscape 4.x - no known problems - comes with Java version 1.1.5, andcannot be changed (does not allow for 'swing' components).
    • Netscape 6 and 7 - must get the Java Runtime Plug-in from Sun.
    • Mozilla 1.x - no known problems; must install Java Runtime plug-in (asabove).
    • Internet Explorer 6+ - install the Java Runtime Plug-in (version 1.3.1or 1.4.2+)-- there was a time where Microsoft was not packaging their own Java(some legal battle) so if you have that version, you'll need to use the Plug-in.
    • Internet Explorer 5.x - no known problems; may use the MicrosoftVM or install the Java Runtime Plugin (version 1.3.1 or 1.4.2+).
    • Opera - for newer versions, you must install the Java Plug-in (as above); olderversions could be downloaded with the Opera version with Java (recommended).
  • Mac OS9

    • Netscape 4.x - do not use!!
    • Netscape 6 and 7 - install AppleClassic MRJ version 2.2.5 or later and enable Java. Some say it is betterto install the MRJ before installing Netscape.
    • Internet Explorer - enable Java and choose the Apple MRJ
  • Mac OSX

    Comes with Java installed. Please be sure you have the latest update from Apple.

    The beta versions of the Safari browser do not re-draw images correctly (linedrawings look like they don't get 'erased' properly) and do not layout some widgets (buttons, etc). While newer versionsof Safari seem to have corrected some of these issues, if you encounterdifficulties, you should use a different browser.

    If you are using IE, Mozilla or Opera you might check the JVM version they use. If it is 1.3.1, you might visit this site and try the plug-in from there (which is designedto enable Java 1.4.2 with these browsers). You can check the version here.

  • Linux

    • Netscape 4.x - usually will only allow you to use the built-inruntime, version 1.1.5. This does not have 'swing' components (modernbuttons, menus, etc).
    • Netscape 6 and 7 - install Java Plug-in (version 1.3.1 or 1.4.2+) and enable Java
    • Mozilla 1.x - install the Java plug-in (version 1.3.1 or 1.4.2+) and enable Java.
    • Opera 6 - unknown
  • Solaris (Unix) on Sparc


  • SGI Irix

Running Older Versions Of Netscape On YourMac

68030's and 68040's

You can run Netscape4.08 on an 040 Mac very happily. You just use the Custom Installfeature and just continue when it warns about your OS being not up toit.

  • I have installed and run Netscape 4.0.8 (stand-alone) on several 68K Macs with only system 7.5, and it works very well. I did this using the Easy Install option, and just 'continuing' past the System 7.6x warning window.
  • You must have the extension CFM-68K Runtime Enabler 4.0 installed for this to work.
  • The CFM-68K Runtime Enabler 4.0 extension requires the ObjectSupportLib 1.2 extension.

To use Netscape 4.08 or 4.07 with system 7.5.5 you must alsohave Object Support Library 1.2 in your extensions folder along withthe CFM Runtime Enabler 68k.

You can use 4.08 or 4.07 only for secure purchases on the Web. Forregular browsing use 2.02 because it is much faster.


Netscape 4 For Mac

Netscape 1.1N and 2 will work fine, but of course the HTMLcompatibility is so outdated that many pages may look bad. MacWeb andMosaic 1 and 2 shouuld work fine too, with the above caveats.


On 68000 macs (Plus, SE, Portable, Classic, PB100) NCSA Mosaic1.0.3, MacWeb 1.00A3.2, v2.0, MacLynx and MacWWW 1.03 (Samba)work.

MacWeb 1.00A3.2 works better than v1.1.1 E which crashes whensaving prefs. MacWeb 2.0 has more features and understands more HTMLtags than v1.00A3.2 but it is also slower and buggier.

NCSA Mosaic 1.0.3 can display in-line GIFs but with MacWeb youmust use an external helper (click and hold on an image icon, choose'Retrieve to Disk' from the pop-up menu and view with GIFConverter orGIFwatcher DA). ...note that often GIFConverter, when trying to openJPEGs with 'millions' of colors, gives an 'out of memory' error onlow-memory machines. A workround is to use JPEG Convert 1.0 to turnthe JPEG into a GIF. GIFs are limited to 256 colours and need lessmemory to display. You can turn DAs like GIFwatcher DA into an appwith DA Piggyback; this enables drag 'n drop and automatic launchingwhen used as a (MacWeb 2.0) helper on System 7. Note that you can'tchange GIFwatcher's default settings (including the window size) oncethe DA has been converted into an app - you have to set it up the wayyou want first, then run it through DA PiggyBack. With RAM Charger itis possible to squeeze _both_ MacWeb 1.00A3.2 and GIFConverter to runsimultaneously on a 4MB mac.

If the default screen in MacLynx is too big it is possible to openlynx.cfg file by a text editor and set the lines on a screen from thedefault 35 to 24, for example (edit the line: TERM_LINES:35 to:TERM_LINES:24). The home page (or sometimes called the menu page)from Internet Config can be invoked with the 'm' key. The homepagecan be set by editing the line:STARTFILE:file://localhost/~/index.html; change it to any valid URL.There are many more options in lynx.cfg file.

MacWWW 1.03 (Samba) works on 68000 macs (at least on System 6.0.5- it crashes on System 7.0.1*). It opens fine, loads the startup pagefine (doesn't know how to read files from disk, text-only, no ISO8859-1 translation, opens a new window for each link). Do not closeany windows as this crashes the mac; also quitting MacWWW seems tocause a crash.



ResEdit instructions for proxy support in MacWeb 1.00A3.2:


www helper for midi files (you need QuickTime also):


www helper Sparkle opens and converts mpg- and QuickTime (.mov,.qt) files (you need QuickTime and in pre-7.5 Systems you also needThreadManager. In PowerMacs you need to install AppleScript extension'ObjectSupportLib' which is included in the installation disks ofyour system). QTVRPlayer can also play QuickTime virtual realityfiles.


Graphic Converter opens most imaginable graphic formats:




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