SMITH MICRO SOFTWARE RELEASES INTERNET CLEANUP 4.0 FOR THE MACINTOSH

Internet Cleanup 4 Provides greater privacy protection and security,
improves web surfing.

Aliso Viejo, CA, June 22, 2006 – Smith Micro Software, Inc. (NASDAQ: SMSI)
announced today Internet Cleanup 4.0 for Macintosh, the latest version of
the popular software that protects users’ privacy and enhances their
Internet experience. Internet Cleanup’s comprehensive solution blocks users
private information from being transmitted over the Internet without their
approval, helps manage Instant Messenger (IM) chat logs, selectively blocks
Flash ads, and gives users greater control over their Internet experience.

“With Internet Cleanup 4.0, users now have even greater control over the
personal information that gets transmitted over the Internet” said Pauline
Shumake, Senior Product Manager, Smith Micro Software, Inc. “Whether it’s
protecting their privacy from spyware or selectively blocking Flash and
banner ads, Internet Cleanup is designed to enhance the surfing experience
and solve the privacy concerns of all Mac users.”

Internet Cleanup 4.0 contains a powerful array of features for Mac users:

* NOW UNIVERSAL BINARY – Works natively with Intel and PowerPC based
Macintoshes.

* NEW! PERSONAL INFO PROTECTOR – Personal Info Protector provides users
with a secure place to store all account numbers, passwords and any other
sensitive information. It eliminates the high-risk of using unprotected
sticky notes or spreadsheets to store easily forgotten but important
information, and prevents it from being transmitted across the Internet.

* NEW! BLOCKS FLASH ADS – Flash ads take forever to load and can be
distracting. With NetBlockade users now have the luxury of seeing only the
Flash content that they want.

* UPDATED! DETECT THE LATEST SPYWARE – SpyAlert scans the computer for
evidence of surveillance Spyware and safely removes it.

* NEW! MAILCLEANER FILTERS ATTACHMENTS WITH SMART RULES – MailCleaner now
includes Smart Rules. Smart rules allow users to create search criteria
that can filter out or find email attachments based upon file name, sender,
file size, date, time and more.

* NEW! GREATER MAILCLEANER SUPPORT FOR APPLE MAIL – MailCleaner allows
users to organize or delete Apple Mail attachments by moving them to
selected folders.

* NEW! SELECTIVE HISTORY EDITING – Internet History Cleaner protects user
privacy by cleaning out specific sites from history lists, deleting those
that compromise privacy.

* SAFEGUARD IM PRIVACY – Instant Messenger Log Cleaner finds and deletes
instant messaging chat logs for major IM applications to keep conversations
private.

* PROTECT AGAINST SECRET MONITORING – Network SpyAlert immediately stops
programs from sending data to the Internet without the user’s permission.

* BLOCK WEB-BASED SPIES- NetBlockade blocks unwanted cookies, ads, pop-ups
as well as URL referrers that tell websites about the previous web page a
user visited.

* ELIMINATE DISTRACTING POP-UPS AND BANNERS – NetBlockade accelerates web
surfing by blocking annoying banner ads, and pop-up and pop-under windows.

* SHRED CONFIDENTIAL FILES SECURELY – SecureDelete acts like a digital
document shredder, completely removing private files so they cannot be
recovered from a hard disk, even with special disk recovery tools.

* KEEP SURFING HABITS PRIVATE – Internet Cleanup clears away hidden files
that show outsiders which Web pages, sites, and images were viewed. It can
automatically delete unwanted cookies and protect the cookies users want.

* INTERNET FILE FINDER TOOL – Forms Auto-Fill Data Cleaner finds and remove
any auto-fill data collected by web browsers; Cookie Editor gets rid of the
browser cookies users don’t want and keeps the ones they do; Supports all
major web browsers, including Safari, Firefox, Mozilla, Internet
Explorer/AOL Netscape, OmniWeb, Camino, iCab, Opera, Sherlock, and Shiira.

* IT’S NOT ALL OR NOTHING ANYMORE – Internet Cleanup allows cleaning
actions to be applied to individual files returned by searches. Move items
to the Trash or to a folder of the user’s choosing.

* SCHEDULE TASKS – The Scheduler tool lets users create scheduled tasks to
automatically perform searches and clean their system.

* RUN MULTIPLE FUNCTIONS AT THE SAME TIME – Internet Cleanup’s
multi-threaded implementation allows users to conduct multiple tasks
without having to wait for searches or other time-consuming operations to
complete. Users can see the progress of all searches and tasks in the
activity viewer window

Pricing and Availability

The MSRP for Internet Cleanup 4.0 is $29.99. Users of earlier versions of
Internet Cleanup Mac or iClean can upgrade to Internet Cleanup 4.0 for a
special price of $14.99. This offer is available for a limited time. To
upgrade go to: http://allume.com/store/upgrades/.

Download a Free trial version at http://www.allume.com/mac/cleanup/trial

To learn more about and our product lines visit: www.smithmicro.com or
www.allume.com.

System Requirements
Internet Cleanup 4.0 works on Mac OS 10.4 for both Intel and PowerPC based
Macintoshes.

About Smith Micro Software:
Smith Micro Software, Inc., headquartered in Aliso Viejo, CA, is a
developer and marketer of wireless communication, broadband and utility
software products for multiple OS platforms. The company designs integrated
cross platform, easy-to-use software for personal computing and business
solutions around the world. With a focus on Wireless and Broadband
technologies and the Internet, the company’s products and services enable
wireless communications, file and image compression, digital image and
music management, eCommerce, eBusiness, Internet communications
(voice-over-IP), video conferencing, and traditional computer telephony.
The Consumer division develops and publishes award-winning software
solutions for Windows and Macintosh, empowering users in the areas of
information access, removal, recovery, security, and Internet distribution.
Our leading brands are QuickLink, StuffIt, Internet Cleanup and Spring
Cleaning. Smith Micro’s complete line of products are available online at
the company’s websites, direct from our enterprise group, retailers, and
through original equipment manufacturers (OEMs) symbol SMSI. For more
information, contact Smith Micro at (949) 362-5800.