OpenBuildings Designer vs RIB iTWO

OpenBuildings Designer8.9Visit RIB iTWO8.6Visit

Higher score OpenBuildings Designer #5 in BIM Software 8.9/10 Paid ✓ 5 of 5 features Visit site

vs

RIB iTWO #8 in BIM Software 8.6/10 Pricing on request ✓ 4 of 5 features Visit RIB iTWO

• OpenBuildings Designer fits best

  Large multidisciplinary engineering projects

• RIB iTWO fits best

  Construction cost and 5D delivery teams

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Side by side

Feature	OpenBuildings Designer 8.9/10 Visit ↗	RIB iTWO 8.6/10 Visit ↗
At a glance
Editor score	8.9	8.6
Ranking	#5 in BIM Software	#8 in BIM Software
Best for	Large multidisciplinary engineering projects	Construction cost and 5D delivery teams
Pricing model	Paid	Paid
Starting price	$3,844/yr	—
Free plan	—	—
Free trial	—	—
Deployment	Cloud, Desktop	Cloud, Self-hosted, Desktop
Platforms	Windows	Windows
Support	Phone, Tickets, Community, Docs · 24/7	Email, Phone, Live chat, Docs
Integrations	10 integrations	12 integrations
Built for	Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features OpenBuildings Designer 5/5 · RIB iTWO 4/5
IFC support	✓	✓
Cloud collaboration	✓	✓
Clash detection	✓	✓
Quantity takeoff	✓	✓
API access	✓ (best)	Not checked yet
Specs
Discipline coverage	Multi-discipline	Multi-discipline
Mobile access	None	Not checked yet
Our review
Pros	Covers architectural, structural, mechanical, and electrical modeling Combines clash detection, energy analysis, and generative design Exchanges IFC, COBie, DWG, RFA, and SketchUp data	Connects BIM models with quantities, estimating, tendering and billing Supports IFC, CPIXML and many design-software integrations Covers scheduling, cost control, clashes and cloud collaboration
Cons	Annual licensing starts at $3,844 per license Runs on Windows with no mobile access May be more scope than focused design teams need	Pricing requires an individual offer, limiting upfront comparison Windows-only coverage narrows platform flexibility Its broad scope may exceed the needs of smaller, simpler projects
Our verdict	OpenBuildings Designer is multidisciplinary BIM software from Bentley Systems for architects, structural engineers, mechanical and electrical designers, and construction teams. It brings 3D building modeling, coordinated documentation,… Read the review →	RIB iTWO is construction project management software for architecture and engineering offices, contractors, public administrations, infrastructure companies and industrial construction departments. Its focus is 5D delivery: connecting 3D… Read the review →

Strengths and trade-offs

• OpenBuildings Designer — where it wins

  • Covers architectural, structural, mechanical, and electrical modeling
  • Combines clash detection, energy analysis, and generative design
  • Exchanges IFC, COBie, DWG, RFA, and SketchUp data

  Where it doesn't

  • Annual licensing starts at $3,844 per license
  • Runs on Windows with no mobile access
  • May be more scope than focused design teams need

• RIB iTWO — where it wins

  • Connects BIM models with quantities, estimating, tendering and billing
  • Supports IFC, CPIXML and many design-software integrations
  • Covers scheduling, cost control, clashes and cloud collaboration

  Where it doesn't

  • Pricing requires an individual offer, limiting upfront comparison
  • Windows-only coverage narrows platform flexibility
  • Its broad scope may exceed the needs of smaller, simpler projects

• OpenBuildings Designer8.9/10 · Paid

  A deep multidisciplinary BIM suite for large engineering projects, priced for specialist teams.

  Visit siteFull verdict →
• RIB iTWO8.6/10 · Pricing on request

  A broad 5D BIM suite for teams connecting models, quantities, costs and delivery.

  Visit RIB iTWOFull verdict →