Larry Teren and Associates

Coming soon- Integrated CRM module for OSAS 8.0

Check out OSAS Blog to watch presentation.

Our OSAS Blog

Recent Posts:

Use Crystal Reports With OSAS

Accounting Software and The Cloud

What is a Computer Consultant?

OSAS version 8.0- A Preview

Enterprise Manager- a versatile tool

How to Use SQL Query in Enterprise Manager

Accessing OSAS Data in Excel

For all OSAS support, call 773-502-5771


Is OSAS, Open Systems Accounting Software, Good Business Software?

Open Systems Accounting Software (OSAS) Programming Support Specialists

We can support all versions of OSAS back to release 2.42.


Let Us Help You

If you do not currently have an OSAS reseller or technical consultant to provide day-to-day or project support, give us a call at 773-502-5771 or email us at

“ From our Chicago area location, clients all over the Continental U.S. use our assistance. In today's DSL, T1, Cable and other high-speed Internet world, support is a click away. ”

Open Source Design

OSAS remains the longest-running, major accounting software provider to include the source code at no additional cost.

OSAS 7.5 demos

other blog entries

November 20, 2013

OSAS 8.0 Presentation

Use Crystal Reports With OSAS

Accounting Software & The Cloud

OSAS 8.0 Preview

How to Close Out Older Purchase Order in OSAS

How to apply credit memo and deposits to invoices in OSAS

Enterprise Manager is versatile tool for linking OSAS to Microsof Excel

Call 773-502-5771 as the first step to getting the type of OSAS support you expect.

OSAS 8.0 Preview


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