Full disclosure first: we are Web Solutions NYC, we build B2B customer portals, and we are on this list. What we offer in exchange for that bias is the same deal as our other market maps: named competitors with verifiable positioning, published criteria, and honest guidance on which firm – or which packaged product instead – fits which situation. If you want the software-versus-build decision itself, start with our B2B portal software comparison; this page is for buyers who already know they need a builder.
What we evaluated
- ERP integration depth. A portal is an ERP integration wearing a UI. Contract pricing, credit, open AR, and order history all resolve from the ERP or the portal fails – so integration practice is the first filter.
- B2B specificity. Dealer hierarchies, customer part numbers, UOM logic, quoting. Firms that primarily build B2C storefronts or generic web portals are noted as such.
- Delivery model. Custom build, configured commerce platform, or productized portal – each is legitimate; buyers should know which they are buying.
- Verifiable references. Named clients or published case studies, not testimonial walls.
The companies
1. Web Solutions NYC (New York, NY)
That is us – apply skepticism and verify against our portal development page and case studies. The checkable facts: building B2B commerce since 2007, 50+ implementations, portals built as configured commerce platforms (Adobe Commerce or Shopware, catalog behind login) with custom integration layers for NetSuite, SAP, Dynamics, Acumatica, Sage, and Epicor P21. Representative work: the MAAX Bath distributor portal, where distributors configure products against real-time manufacturing capacity. We are a Shopware Platinum Partner and official Adobe Commerce partner. Honest limits: senior-only and not cheap; wrong fit for startups and standard-pricing use cases where SaaS portal software would honestly serve you better.
2. Corevist (Raleigh, NC)
The SAP specialist. Corevist sells managed B2B portals specifically for manufacturers running SAP ECC or S/4HANA, with real-time integration as the core pitch and a managed-service delivery model. If you run SAP and want a portal as a product with the integration handled, they are the focused answer – the trade-off is that the experience lives within their product’s boundaries.
3. Elogic Commerce (global, US presence)
A Magento-centric ecommerce agency with a dedicated B2B portal development practice and strong content depth on the subject. Elogic’s center of gravity is Adobe Commerce work at competitive rates with a large distributed team; a sensible shortlist candidate when Magento is your platform and budget efficiency matters.
4. ScienceSoft (McKinney, TX)
A large IT services firm (700+ staff, 35 years) with portal development as one line among many. The breadth is real – they build patient portals, vendor portals, and B2B commerce portals alike. Fit: enterprises that want a big-firm engagement model and have internal product ownership to direct it. Less fit: mid-market companies that need the vendor to bring the B2B domain expertise.
5. Itransition (Denver, CO)
Similar profile: a large outsourcing firm with a solid B2B portal services practice and deep engineering bench. Strong when the portal is one part of a bigger custom software program; the B2B commerce specificity – pricing models, dealer logic, ERP quirks – is yours to specify.
6. Dinarys (EU, US clients)
An ecommerce development agency (Magento, Shopware certified) doing custom B2B portal work for US clients from European delivery centers. Competitive rates and legitimate platform credentials; weigh time-zone overlap and who owns post-launch support.
7. k-ecommerce (Montreal, Canada)
A product company more than an agency: ERP-integrated ecommerce and portal software purpose-built for Microsoft Dynamics and SAP Business One shops, with implementation services around it. If you run one of those ERPs and your model fits theirs, it is the fastest path on this list – the classic product trade-off applies.
Product, platform, or custom: the honest routing
Most portal buyers should not start with an agency shortlist. Start with the shape of your pricing. Standard price lists and simple accounts: buy software (our software comparison names the options). ERP-resolved contract pricing, UOM logic, dealer networks: you need a builder, and the platform-configured route usually beats from-scratch because it inherits cart, checkout, and account machinery instead of reinventing it. The full architecture, cost ranges, and per-ERP pricing-sync mechanics are documented in our B2B customer portal development guide, and the sequencing argument – portal before storefront – in our portal-first playbook.
Frequently asked questions
Custom portal builds for mid-market companies typically run $75,000 to $250,000+ and take 4 to 9 months, with ERP complexity the biggest cost driver. Configured-platform portals (Adobe Commerce or Shopware with the catalog behind login) land in the same range but grow into full storefronts without a rebuild. SaaS portal products cost less upfront and fit standard pricing models; they run out where contract pricing, UOM logic, and multi-warehouse rules begin.
Buy software when your pricing and account structures are standard and speed matters most. Hire a builder when the portal must read contract pricing from your ERP, respect credit and terms, handle unit-of-measure conversions, or serve dealer networks with territory logic – the exact places packaged tools break. Most mid-market manufacturers and distributors end up with a configured B2B commerce platform extended where their business genuinely differs.
ERP integration depth. A portal is account-specific by definition – pricing, credit, order history, and invoices all live in the ERP, so the portal team’s real skill is integration architecture: data ownership, sync design, and failure handling. Ask any candidate which ERPs they have integrated portals with, how they resolve customer-specific pricing, and what happens to orders when the ERP is offline.
A focused first release – login mapped to ERP accounts, contract pricing, quick order, order history, open invoices – typically ships in 10 to 16 weeks. Full multi-phase portal programs with dealer management, quoting, and punchout run 4 to 9 months. Anyone quoting weeks for ERP-integrated contract pricing has not scoped your pricing model yet.
Scoping a portal? Bring your pricing model and your ERP. We will tell you honestly whether you need us, a competitor above, or a $30k SaaS product – it is a cheaper conversation than the wrong build. Let’s talk.