Timberline Accounting is an old application developed by Timberline Software. From what it seems it has been discontinued and replaced by Sage 300 Construction and Real Estate. The main disadvantage of this product is his price which is around $2000. Fortunately, you can create a personalized package and you can purchase only what you need. The main advantages of the software are its modules (accounting, estimating, procurement, production management, project management, property management, service management) which will help you to cover all aspects of your business. Also, the program can run only on Windows platforms and require at least a 1.8 GHz processor and 1.5 GB of RAM memory.