Free GUI tool for testing OCSP responders (RFC 6960) – Windows and macOS.
➡ Releases
| Platform | File |
|---|---|
| Windows x64 | pkitnext-ocsp-tester.exe (portable, no installer needed) |
| macOS Apple Silicon | pkitnext-ocsp-tester-macos-arm64.zip |
| macOS Intel | pkitnext-ocsp-tester-macos-intel.zip |
- Load end-entity and issuer certificate (PEM or DER format)
- Or enter a serial number directly – hex (
01:ab:cd) or decimal (123456) - Test multiple OCSP responders in parallel
- Displays certificate status: good / revoked / unknown
- Shows serial number in both hex and decimal (copy button)
- Response time measurement and raw response bytes
- Demo certificates with one-click refresh
- Download and run
pkitnext-ocsp-tester.exe - Load end-entity + issuer certificate or switch to “Serial number (hex dec)” mode
- Enter one or more OCSP responder URLs
- Click ▶ Run OCSP Tests
- Windows: Windows 10 / Server 2016 or newer (x64)
- macOS: macOS 11 or newer (Apple Silicon or Intel)
Built by PKITNEXT LABS · www.pkitnext.de