OpenConstructionERP vs Sage Estimating

OpenConstructionERP9.4Visit SESage Estimating8.7Visit

Higher score OpenConstructionERP #1 in Construction Estimating Software 9.4/10 Free plan Free plan✓ 4 of 5 features Visit site

vs

SE Sage Estimating #6 in Construction Estimating Software 8.7/10 Pricing on request ✓ 0 of 5 features Visit Sage

• OpenConstructionERP fits best

  Open-source teams needing full estimating depth

• Sage Estimating fits best

  Established contractors using Sage workflows

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Side by side

Feature	OpenConstructionERP 9.4/10 Visit ↗	SESage Estimating 8.7/10 Visit ↗
At a glance
Editor score	9.4	8.7
Ranking	#1 in Construction Estimating Software	#6 in Construction Estimating Software
Best for	Open-source teams needing full estimating depth	Established contractors using Sage workflows
Pricing model	Free	Paid
Starting price	Free plan	Pricing on request
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Self-hosted, Desktop	Cloud, Desktop
Platforms	Web, Windows, macOS, Linux	Windows
Support	Email, Community, Docs	Live chat, Tickets, Community, Docs
Integrations	6 integrations	7 integrations
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features OpenConstructionERP 4/5 · Sage Estimating 0/5
Digital takeoff	✓ (best)	Not checked yet
Assembly library	✓ (best)	Not checked yet
Labor and material costs	✓ (best)	Not checked yet
Bid management	✓ (best)	Not checked yet
Accounting integrations	—	Not checked yet
Specs
Estimate limit	Not checked yet	Not checked yet
Platform	Hybrid	Not checked yet
Our review
Pros	BOQ, cost databases, assemblies, and hierarchical estimate management CAD/BIM and PDF takeoff across major construction file formats Free AGPL-3.0 model with web, desktop, API, and self-hosted options	Digital takeoff, assemblies, and trade-specific cost databases Bid leveling, historical estimates, and detailed cost calculations Integrations across Sage, eTakeoff, RSMeans, and Power BI
Cons	Accounting integrations are not included The broad feature set may exceed the needs of simple estimating teams AI-assisted workflows require connections to external LLM providers	Pricing requires contacting Sage for an expert-led discussion Desktop software is available on Windows Broader value depends on fitting into Sage-centered workflows
Our verdict	OpenConstructionERP is an open-source, self-hosted construction ERP for companies managing estimating and project workflows. Its core scope covers bills of quantities, hierarchical cost estimates, construction cost databases, resource… Read the review →	Sage Estimating is construction estimating software for general contractors, construction management firms, and specialty contractors. It supports digital quantity takeoff, trade-specific cost databases, customizable assemblies, and… Read the review →

Strengths and trade-offs

• OpenConstructionERP — where it wins

  • BOQ, cost databases, assemblies, and hierarchical estimate management
  • CAD/BIM and PDF takeoff across major construction file formats
  • Free AGPL-3.0 model with web, desktop, API, and self-hosted options

  Where it doesn't

  • Accounting integrations are not included
  • The broad feature set may exceed the needs of simple estimating teams
  • AI-assisted workflows require connections to external LLM providers

• Sage Estimating — where it wins

  • Digital takeoff, assemblies, and trade-specific cost databases
  • Bid leveling, historical estimates, and detailed cost calculations
  • Integrations across Sage, eTakeoff, RSMeans, and Power BI

  Where it doesn't

  • Pricing requires contacting Sage for an expert-led discussion
  • Desktop software is available on Windows
  • Broader value depends on fitting into Sage-centered workflows

• OpenConstructionERP9.4/10 · Free plan

  A free, open-source estimating platform with unusually broad takeoff, modeling, and tendering coverage.

  Visit siteFull verdict →
• SESage Estimating8.7/10 · Pricing on request

  A mature estimating system for contractors already working in the Sage ecosystem.

  Visit SageFull verdict →