fsmIT provides a complete measurement environment for performing Functional Size Analysis. It covers the whole measurement lifecycle from defining the purpose and scope, through identifying the software components and Functional Processes (COSMIC); Elementary Processes (IFPUG; Logical Transactions (FPA Mk2), to a comprehensive report of the size.

.......Below is an example of a Data Movement Sequence Diagram as designed by Pentad-SE and automatically generated by fsmIT.

Depending on the version fsmIT has 3 modes of operation:

• Necessary to demonstrate the correctness of the measurement using objective evidence.
• The client requires the evidence of the size of the software being developed or supported .
• The client requires the evidence to be provided in an auditable form
• fsmIT provides complete traceability between the components of the measurement models and the source of the information
  ( Requirements Specifications, Records of Interviews etc).

• This mode would be used if speed of measurement is an issue.
• The purpose of the measurement does not require the rigour of maintaining the audit trail.
• The analyst has the option of using the feature applicable to the Mandatory Audit Trail but can also create the measurement models without maintaining traceability.

• It is often the case that software is wholly or largely undocumented.
• All FSM Methods measure the size of the Functional User Requirement (FUR).
• The information collected to measure the functional size represents the unstated FURs
• fsmIT uses the information collected for measurement of size to reverse engineer the FUR in the form of a basic Use Case statement supported by a Sequence Diagram.
• In this way the value of performing a measure is increased.

There are 3 versions

• fsmIT-CE - The Community Edition . Free to download.

• fsmIT-PE - The Personal Edition . Designed to record measurement of a single application or system in a single organisational unit.
  A single estimating model is used to predict effort.

• fsmIT-Pro - The Professional Edition. Designed to record measurement of several applications or systems across several organisational units. Multiple Estimating Models can be maintained for the purpose of estimating in different environments.