Project Summary
FsCheck is a tool for testing .NET programs automatically. The programmer provides a specification of the program, in the form of properties which functions, methods or objects should satisfy, and FsCheck then tests that the properties hold in a large number of randomly generated cases. While writing the properties, you are actually writing a testable specification of your program. Specifications are expressed in F#, using combinators defined in the FsCheck library. FsCheck provides combinators to define properties, observe the distribution of test data, and define test data generators. When a property fails, FsCheck automatically displays a minimal counter example.
FsCheck started as a port of Haskell's QuickCheck, and draws from ideas in Scala's scalacheck as well.
Badges
In a Nutshell, FsCheck...
- ...
- ...
-
...
has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
...
took an estimated 4 years of effort (COCOMO model)
starting with its first commit in October, 2008
ending with its most recent commit 14 days ago
Quick Reference
BSD 4-clause (University of California-Specific)
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
-
...
55% of companies leverage OSS for production infrastructure
-
...
data presented on the Open Hub is available through our API
-
...
65% of companies leverage OSS to speed application development in 2016
-
...
you can embed statistics from Open Hub on your site
30 Day SummaryJan 12 2026 — Feb 11 2026
|
12 Month SummaryFeb 11 2025 — Feb 11 2026
|
