Best OpenConstructionERP Alternatives in 2026
The top OpenConstructionERP alternatives are Bidwright, Buildxact and STACK: 15 construction estimating software our editors would look at instead of OpenConstructionERP, in our ranking order.
OpenConstructionERP: A free, open-source estimating platform with unusually broad takeoff, modeling, and tendering coverage. Where it falls short: accounting integrations are not included.
Switching from OpenConstructionERP? For most construction estimating software buyers the best OpenConstructionERP alternative is Bidwright, built for open-source estimators with advanced takeoff needs. On a budget, Buildxact starts at $169/mo.
Why People Look for an OpenConstructionERP Alternative
- 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
- No accounting integrations — 2 of the alternatives below have it
Quick Picks by What You Need
- Best overallBidwright9.3
Open-source estimators with advanced takeoff needs
Visit Bidwright - Lowest priceBuildxact9.1
Paid plans from $169/mo
Visit Buildxact - Best free optionBidwright9.3
Has a free plan
Visit Bidwright - Best for accounting integrationsCubit Estimating8.4
Accounting integrations (OpenConstructionERP: no)
Visit Cubit Estimating
All 15 OpenConstructionERP Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forOpen-source estimators with advanced takeoff needs
A free, open-source workspace for detailed takeoff, estimating, review, and bid delivery.
- Assembly library
- Labor and material costs
- Digital takeoff
9.3/10★★★★★Visit Bidwright -
Best forSmall contractors needing estimating and job management
A broad construction workflow platform with a free plan and a high paid entry price.
- Bid management
9.1/10★★★★★Visit Buildxact -
Best forEstimators needing takeoff and many integrations
STACK combines digital takeoff, estimating, AI tools, and construction integrations.
9.0/10★★★★☆Visit STACK -
Best forTrade estimators needing bid and change-order depth
A deep web estimating workspace for trade bids, takeoffs, pricing, and change orders.
- Assembly library
- Labor and material costs
- Digital takeoff
8.8/10★★★★☆Visit Trimble -
Best forEstablished contractors using Sage workflows
A mature estimating system for contractors already working in the Sage ecosystem.
8.7/10★★★★☆Visit Sage -
Best forCost planners needing 2D, 3D, and carbon analysis
A deep estimating suite for teams working across drawings, BIM models, costs, and carbon.
8.6/10★★★★☆Visit RIB CostX -
Best forWindows-based estimating departments
A deep Windows-focused estimating suite for takeoff, revisions, tendering and bid workflows.
- Labor and material costs
- Digital takeoff
- Bid management
8.5/10★★★★☆Visit CostX -
Best forTeams needing BIM takeoff and collaboration
- Better than OpenConstructionERP:
- Accounting integrations
A BIM-ready estimating and takeoff workspace for collaborative construction teams.
- Accounting integrations
- Digital takeoff
- Bid management
8.4/10★★★★☆Try Cubit Estimating -
Best forTender-focused teams needing historical pricing
A tender-focused estimating workspace with takeoff, bid comparison and historical pricing.
8.3/10★★★★☆Visit Causeway -
Best forMEP estimators needing specialized takeoff
- Better than OpenConstructionERP:
- Accounting integrations
Specialized MEP takeoff and estimating for Windows-based mechanical contractors.
- Accounting integrations
- Assembly library
- Labor and material costs
8.2/10★★★★☆Visit QuoteSoft -
Best forElectrical contractors needing large cost libraries
A deep electrical cost library with takeoff, labor, supplier pricing, and bid analysis.
8.1/10★★★★☆Visit ConEst -
Best forWeb-based preconstruction estimating teams
A focused web estimator for teams managing takeoffs, bids, proposals, and cost data.
- Labor and material costs
- Digital takeoff
- Bid management
8.0/10★★★★☆Visit ProEst -
Best forResource-based estimators linking bids to schedules
A resource-based estimator that connects bids, budgets, resources, and schedules.
7.9/10★★★★☆Visit Trimble Quest -
Best forEarly-stage estimators using historical cost data
A focused choice for early estimates, takeoff and standardized construction bidding workflows.
7.8/10★★★★☆Visit Trimble WinEst -
Best forTrade contractors needing supplier-linked estimating
A focused MEP estimating suite with supplier pricing and FOUNDATION integration.
7.7/10★★★★☆Visit McCormick
OpenConstructionERP Alternatives: Common Questions
What is the best alternative to OpenConstructionERP?
Bidwright: #2 in our Construction Estimating Software ranking, with an editor score of 9.3 out of 10. A free, open-source workspace for detailed takeoff, estimating, review, and bid delivery.
Is there a free alternative to OpenConstructionERP?
Yes. Bidwright, Buildxact and STACK have a free plan or a free tier.
Why do people look for OpenConstructionERP alternatives?
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.
How do I switch from OpenConstructionERP?
Export your data from OpenConstructionERP (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel OpenConstructionERP.
How to Switch from OpenConstructionERP
- Export your data from OpenConstructionERP (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel OpenConstructionERP.
OpenConstructionERP vs Each Alternative
| # | Tool | Paid from | Bid management | Score |
|---|---|---|---|---|
| 1 | OpenConstructionERP | Free | Yes | 9.4 |
| 1 | Bidwright | Free | Yes | 9.3 |
| 2 | Buildxact | $169/mo | Yes | 9.1 |
| 3 | STACK | 9.0 | ||
| 4 | Trimble Accubid Anywhere | Yes | 8.8 | |
| 5 | Sage Estimating | 8.7 | ||
| 6 | RIB CostX | 8.6 | ||
| 7 | CostX | Yes | 8.5 | |
| 8 | Cubit Estimating | A$167/user/mo | Yes | 8.4 |
| 9 | CausewayOne Estimating | 8.3 | ||
| 10 | QuoteSoft | Yes | 8.2 | |
| 11 | ConEst IntelliBid | 8.1 | ||
| 12 | ProEst | Yes | 8.0 | |
| 13 | Trimble Quest | 7.9 | ||
| 14 | Trimble WinEst | 7.8 | ||
| 15 | McCormick Systems | 7.7 |
Head-to-Head
- OpenConstructionERP vs Bidwright
- OpenConstructionERP vs Buildxact
- OpenConstructionERP vs STACK
- OpenConstructionERP vs Trimble Accubid Anywhere
- OpenConstructionERP vs Sage Estimating
- OpenConstructionERP vs RIB CostX
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update