The Firefox and Thunderbird packages install the programs in /opt/sfw subdirectories via the following steps, run as root. For example,
bunzip2 firefox-9.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
pkgadd -d firefox-9.0.1.en-US.solaris-10-fcs-i386-pkg
Some users have reported that if the directory /opt/sfw is actually a link to some other directory, when you run pkgadd to install these packages, it will delete the link and create a new /opt/directory. If this happens, you will need to move the firefox files to your other directory and relink /opt/sfw to it. Alternatively, for Firefox 9.0.1, 8.0.1, 7.0.1, 6.0.2, 5.0, 4.0.1, and 3.6.18 or Thunderbird 3.1.11, 5.0, 6.0.2 7.0.1, 8.0 and 9.0.1, you can use the tarred versions of the packages found in ftp://ftp.sunfreeware.com/pub/freeware/mozilla/.
If you are concerned about file integrity, the .cksum and .md5sum files have the checksums you can compare to your downloaded files.
When I install Sunbird, I put the appropriate file into /opt/sfw and bunzip2 and untar it. It creates an /opt/sfw/sunbird directory. /opt/sfw/sunbird/sunbird starts the program. You can choose a different installation location.
More details on installation and potential issues can be found in README.firefox2, README.firefox3, README.firefox6, or README.thunderbird2.
i386/OpenSolaris
firefox-9.0.1.en-US.opensolaris-i386-pkg.bz2
firefox-9.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-9.0.1.en-US.opensolaris-sparc-pkg.bz2
firefox-9.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-9.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-9.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-9.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-9.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-8.0.1.en-US.opensolaris-i386-pkg.bz2
firefox-8.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-8.0.1.en-US.opensolaris-sparc-pkg.bz2
firefox-8.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-8.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-8.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-8.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-8.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-7.0.1.en-US.opensolaris-i386-pkg.bz2
firefox-7.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-7.0.1.en-US.opensolaris-sparc-pkg.bz2
firefox-7.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-7.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-7.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-7.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-7.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-6.0.2.en-US.opensolaris-i386-pkg.bz2
firefox-6.0.2.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-6.0.2.en-US.opensolaris-sparc-pkg.bz2
firefox-6.0.2.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-6.0.2.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-6.0.2.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-6.0.2.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-6.0.2.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-5.0.en-US.opensolaris-i386-pkg.bz2
firefox-5.0.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-5.0.en-US.opensolaris-sparc-pkg.bz2
firefox-5.0.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-5.0.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-5.0.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-5.0.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-5.0.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-4.0.1.en-US.opensolaris-i386-pkg.bz2
firefox-4.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-4.0.1.en-US.opensolaris-sparc-pkg.bz2
firefox-4.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-4.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-4.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-4.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-4.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
firefox-3.6.18.en-US.opensolaris-i386-pkg.bz2
firefox-3.6.18.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
firefox-3.6.18.en-US.opensolaris-sparc-pkg.bz2
firefox-3.6.18.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
firefox-3.6.18.en-US.solaris-10-fcs-i386-pkg.bz2
firefox-3.6.18.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
firefox-3.6.18.en-US.solaris-10-fcs-sparc-pkg.bz2
firefox-3.6.18.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/Solaris 8
firefox-2.0.0.20.en-US.solaris8-i386-gtk1-pkg.bz2
firefox-2.0.0.20.en-US.solaris8-i386-gtk1-pkg.bz2.cksum
SPARC/Solaris 8
firefox-2.0.0.20.en-US.solaris8-sparc-gtk1-pkg.bz2
firefox-2.0.0.20.en-US.solaris8-sparc-gtk1-pkg.bz2.cksum
i386/OpenSolaris
thunderbird-9.0.1.en-US.opensolaris-i386-pkg.bz2
thunderbird-9.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-9.0.1.en-US.opensolaris-sparc-pkg.bz2
thunderbird-9.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-9.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-9.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-9.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-9.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
thunderbird-8.0.en-US.opensolaris-i386-pkg.bz2
thunderbird-8.0.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-8.0.en-US.opensolaris-sparc-pkg.bz2
thunderbird-8.0.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-8.0.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-8.0.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-8.0.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-8.0.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
thunderbird-7.0.1.en-US.opensolaris-i386-pkg.bz2
thunderbird-7.0.1.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-7.0.1.en-US.opensolaris-sparc-pkg.bz2
thunderbird-7.0.1.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-7.0.1.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-7.0.1.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-7.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-7.0.1.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
thunderbird-6.0.2.en-US.opensolaris-i386-pkg.bz2
thunderbird-6.0.2.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-6.0.2.en-US.opensolaris-sparc-pkg.bz2
thunderbird-6.0.2.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-6.0.2.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-6.0.2.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-6.0.2.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-6.0.2.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
thunderbird-5.0.en-US.opensolaris-i386-pkg.bz2
thunderbird-5.0.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-5.0.en-US.opensolaris-sparc-pkg.bz2
thunderbird-5.0.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-5.0.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-5.0.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-5.0.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-5.0.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/OpenSolaris
thunderbird-3.1.11.en-US.opensolaris-i386-pkg.bz2
thunderbird-3.1.11.en-US.opensolaris-i386-pkg.bz2.md5sum
SPARC/OpenSolaris
thunderbird-3.1.11.en-US.opensolaris-sparc-pkg.bz2
thunderbird-3.1.11.en-US.opensolaris-sparc-pkg.bz2.md5sum
i386/Solaris 10
thunderbird-3.1.11.en-US.solaris-10-fcs-i386-pkg.bz2
thunderbird-3.1.11.en-US.solaris-10-fcs-i386-pkg.bz2.md5sum
SPARC/Solaris 10
thunderbird-3.1.11.en-US.solaris-10-fcs-sparc-pkg.bz2
thunderbird-3.1.11.en-US.solaris-10-fcs-sparc-pkg.bz2.md5sum
i386/Solaris 8
thunderbird-2.0.0.23.en-US.solaris8-i386-gtk1-pkg.bz2
thunderbird-2.0.0.23.en-US.solaris8-i386-gtk1-pkg.bz2.cksum
SPARC/Solaris 8
thunderbird-2.0.0.23.en-US.solaris8-sparc-gtk1-pkg.bz2
thunderbird-2.0.0.23.en-US.solaris8-sparc-gtk1-pkg.bz2.cksum
i386/Solaris 10
sunbird-0.8.en-US.solaris2.10-i386.tar.bz2
SPARC/Solaris 10
sunbird-0.8.en-US.solaris2.10-sparc.tar.bz2
For details on these programs and other packages, go to Mozilla.org.