We were having a performance problem with Sun's javax.comm implementation. We purchased your product, and got it running with our app using the javax.comm API without any changes to our code. After doing so, we even found a buffer length problem that was not being caught by Sun's comm implementation (This had nothing to do with our performance problem). Apart from this, the performance is now excellent - certainly more like what I would have expected! Our application can continually stream data at 115kb in both directions simultaneously with full error detection and correction.
Milton Taylor
We are about to release our JButtons product which uses the javax.comm.SerialPort. We recommend Serialio to go along with it. We tried Sun's implementation of javax.comm.SerialPort, but gave up. We never got it to work 
Sean Kelley
I just purchased your SerialPort product because I was unable to get the SerialDemo that came with Sun's javax.comm. SerialPort implementation working. After installing SerialPort, their SerialDemo example works with your javax.comm.SerialPort implementation! I'm using IBM's VisualAge for Java Professional on WinNT. 
Steve Zielinski
SerialPort works like a dream.
I am using the Zaurus SerialPort package on an Intrinsyc Cerfboard. It works very well, and it works well.
Stephen, Mueller
We've got the Serialio Java class working in "record breaking time", i.e. it took an amazing 5 minutes to get our Java application to send bytes through the serial port.
Trajano Roberto
Marketing Engineer, Amstras
My company purchased your Serialio, modem and ZModem java products for the Win32 platform a little over a year ago. We implemented them in our production environment, communicating with 5 different sites multiple times each day and have been extremely pleased with their performance.
Jim Rohan
my1040EZ.com, Inc.
Thanks tremendously for your help. I will definitely be recommending your software to everyone I meet who mentions the words serial port and Java in the same sentence.
Dr. Harold Sargent
Biosoft Inc.
Some months ago, I was creating a Windows-based controller to manage a modem bank using Java. After initially trying serial drivers from RxTxComm, IBM and Sun each with various problems in stability and operational behavior, I purchased serialio.com's SerialPort package. I was immensely pleased when the package went in seamlessly with no coding changes (using the javax.comm.SerialPort layer), and more so that it has been working reliably ever since. The original goal was to control up to 16 modems on a mid-level (circa 2003) system, thanks in part to SerialPort's…
Lawrence Dol
ADVANCED BusinessLink Corporation
I found the SerialIO.com site via the Apple Developer Connection.  I knew it had to be a good outfit if Apple was willing to suggest them as a source.   I purchased the SerialIO SerialPort Java package and it worked right out of the 'box'.  Then, a month later, I ran into a problem which coincided with my purchase/use of a MacPro after my G5 konked out.  Sadly, things did not work on this Intel-based machine.  I was concerned about OS/Java hassles - and wrote to SerialIO support.   Shortly thereafter I got eMail support which helped me isolate…
Lance Drake
Contract Mac Developer - Santa Fe, NM