While there may not be direct open-source equivalents to SCARM, exploring other free or open-source software for railway and metro planning could be a viable option. These alternatives might not offer the same level of functionality but can provide a starting point for basic planning and design tasks.
: For most new users, the only legitimate way to unlock full functionality is via a one-time purchase on the official SCARM webshop . User Workarounds for the Free Version scarm license key free work