Inmass MRP

Welcome to INMASS/MRP

INMASS/MRP is unquestionably the most full featured and rock solid MRP application on the market today. With almost 35 years of experience, INMASS combines stability and functionality to offer the most cost effective solution available for both hosted and on-premise solutions. We simply cannot be beat when comparing the price/functionality equation against any other system on the market today. INMASS/MRP was developed BY manufacturers FOR manufacturers. This means that, unlike many other systems which first started as accounting packages and added manufacturing later, our focus has always been manufacturing first!


INMASS/MRP is particularly well suited for standard or repetitive manufacturers who:

  • Have big MRP requirements but not the big budget to match.
  • Need very quick time to value in terms of start to finish implementation. We measure implementations in terms of days and not weeks or months.
  • Want a very lean computing environment or can’t afford to replace older machines. INMASS/MRP runs on almost any environment, old or new.
  • Need a lot of users but can’t afford the “lot of users” price.

Nowhere else can you find a low cost, rapid implementation cycle product that has enough functionality to build an aircraft carrier or a complex circuit board!


INMASS/MRP includes a full range of Manufacturing and Accounting applications and allows you to start small and add new modules as your needs grow. Unlike most systems, INMASS is not sold by the number of users. We have one flat cost for any number of users. Need 100 Users? No problem….and no additional costs!


Established in 1978, INMASS/MRP has served more than 5,000 manufacturing companies in thirteen countries worldwide, from small family owned operations to fortune 500 corporations. INMASS/MRP has consistently met the needs of manufacturers who valued the timeless substance of the INMASS MRP methodologies.


The entire system includes 15 core modules from Inventory Control and Material Requirements Planning to Accounting. INMASS is the only package based on the original APICS Dictionary, making it the easiest to learn and use for manufacturing professionals! Our programming staff also offers software customization to meet your company's unique and changing needs.


INMASS is implemented by skilled manufacturing experts with an average background of over 20 years each. Our “live person”, one call support desk offers world class customer support to respond to any operating problems or questions that might arise after go-live. Give us a shout and find out how INMASS can help build a more profitable company without the usual over stocked raw materials inventory or the more common problem of manufacturing DWOOTA (Darn, we’re out of that again).

The full package includes 15 core modules and over 20 utilities, from Inventory Control and Material Requirements Planning to Accounting. And, its the only package based on the APICS Dictionary, making it the easiest to learn and use! Our programming staff also offers software customization to meet your company's unique needs.

News Feed
It’s time for an update! We wanted to give everyone a quick update of the progress of Q-INMASS, the new Windows based version of INMASS. Y
One of the most significantly changed modules within the new INMASS is the Inventory Control module. INMASS users will now be able to effici
The new INMASS General Ledger offers greater flexibility for accounting and financial reporting functions. No longer will sophisticated acco
The Accounts Payable module within the new INMASS goes far beyond the existing system and has many new features that will enhance the A/P pr
The Accounts Receivable module within the new INMASS goes far beyond the existing system and has many new features that will enhance the A/R
One of the new features that we have built into the new INMASS system is a Contact Management system. While this would normally be call a CR