Tech riderRev. 20 Sept 2026
- 1Runs onWindows, Mac, Linux
- 2CostsNot stated by the maker
- 3Verification methoddeductive
- 4Supported formalismscontracts
- 5CounterexamplesYes
- 6Input languagesJava and JML
- 7Deploymentself-hosted
6 lines stated Written from the maker's own pages: openjml.org

Overview
OpenJML is ranked #20 of 33 in formal verification tools on Specifiction. It runs on Windows, macOS, Linux.
Compared on formal verification tools
- Verification method
- deductiveopenjml.org
- Supported formalisms
- contractsopenjml.org
- Counterexamples
- Yesopenjml.org
- Input languages
- Java and JMLopenjml.org
- Deployment
- self-hostedopenjml.org
Best OpenJML alternatives
See all 20 All accessCh 01 PVS Free planLinuxMac Free to start7.5 All accessCh 02 Rocq Free planBrowserLinux Free to start7.5 All accessCh 03 Z3 Free planAndroidAPI Free to start7.4 All accessCh 04 Alloy Analyzer Free planAPILinux Free to start7.2 All accessCh 05 UPPAAL Free planLinuxMac Free to start7.2 All accessCh 06 CBMC Free planLinuxMac Free to start7.1
Where it ranks on Specifiction
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