OpenFieldPro
6.5#20 in plumbing softwareFree planFree planAndroidiOSWebAPI
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It suits field-service teams that want self-hosted lead-to-payment workflows and technician mobile access. Its free core has no listed limits on core operational features.
ServiceM8 suits contractors who need to manage jobs, payments, and customer access, including teams that need offline use or recurring-job support. The free plan is limited to one user and 30 jobs per month.