We are firmly committed to the development of CSA, the development history speaks for itself.

On average, P & L Associates releases at least one major update version every year since its inception in 1990.

Not only that,
we insist on continuous innovation,
the adaptation of advanced software technologies,
and increasingly expanding our coverage of functionalities in this software,
which we consider to be our specialty.

Development History
Start Now

Year

Versions Released

1990

CSA 1.0

1991

CSA 2.0

CSA Classic 1.1

CSA Professional 2.1

1993

CSA Classic 1.8

CSA 2.8

1994

CSA Professional 3.0

1995

CSA Professional 4.0

1996

CSA Professional for Windows (beta)

1997

CSA Professional for Windows (official)

1998-1999

CSA Professional 5.0~5.1

2000-2003

CSA Professional Plus 1.0~1.4

2004-2005

CSA Professional Plus 2.0~2.1

2006

CSA Professional Plus 2.2

2007-2009

CSA Professional Plus 3.0.0~3.0.x

2010-2012

CSA Expert 1.0.0~1.2.6

2012-2013

CSA Expert 2.0.0~2.1.1

2014-2015

CSA Expert 3.0.0~3.3.0

2016-2017

CSA Expert 3.3.1~3.5.0

2018-2019

CSA Expert 3.5.1~3.6.1

2020-2021

CSA Expert 3.6.2~4.0.1

2022

CSA Expert 4.1~5.0.2

2023

CSA Expert 5.1

And Keep Growing...

Empowering Your Practice
with Innovative
Software Solution