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B2B Solutions

B2B software has to serve two audiences at once — your internal team and the clients logging in from outside — which is where generic tools usually break down. Appex Technology builds client portals, billing and reporting systems, and operations tooling that hold up under enterprise sales motions, procurement review, and the access rules that come with them.

Start a projectHow we work
Client & partner portals
CRM & ERP integrations
Automated reporting & ops tooling
What you get

What we actually deliver

  • Client portalA branded, secure space where clients see status, documents, and history without emailing to ask.
  • Billing and invoicingRecurring and milestone billing wired to your payment processor and reconciled against your accounting system.
  • SSO and access controlSAML or OIDC single sign-on and granular permissions — often what unblocks enterprise procurement.
  • Automated reportingScheduled client-facing and internal reports generated from live data rather than assembled manually.
  • System integrationsCRM, ERP, accounting, and support tools connected so records stay consistent across all of them.
Who it’s for

A good fit if…

  • Firms whose clients currently receive updates by email attachment and ad-hoc requests
  • Teams doing manual reporting or invoicing that follows a consistent, encodable pattern
  • Businesses whose deals stall on security review, SSO requirements, or audit questions
  • Companies coordinating work across several systems that do not talk to each other
How it works

From first call to handover

  1. Step 01

    Map the client journey

    Every touchpoint from onboarding to renewal, including the ones currently handled by email.

  2. Step 02

    Model access

    Who sees what, across your staff, client admins, and client end users — decided before it is built, not patched after.

  3. Step 03

    Build and integrate

    The portal and internal tooling together, connected to the systems already holding your data.

  4. Step 04

    Roll out

    Staged onboarding so clients move across without disruption, with documentation for your team.

Often built with

Platforms we pair with this

Twenty

A modern open-source CRM. Custom objects, pipelines, and workflows, self-hosted on your stack.

Replaces Salesforce, HubSpot

Keycloak

Enterprise-grade single sign-on, SAML/OIDC, and user management on your own servers.

Replaces Auth0, Okta

Authentik

A modern identity provider for SSO and access control across your apps and tools.

Replaces Okta

Documenso

Open-source e-signatures so contracts and approvals stay on infrastructure you control.

Replaces DocuSign

ERPNext

Full open-source ERP — accounting, inventory, HR, and operations in one self-hosted suite.

Replaces NetSuite, SAP

FAQ

B2B Solutions — common questions

What makes a client portal actually get used?+
Adoption follows from the portal being the fastest route to something the client already wants — status, documents, invoices — rather than an extra place to check. Portals fail when they duplicate what email already does. We scope around the specific question clients ask most often and make the portal the best answer to it.
Can it integrate with our CRM and accounting system?+
Yes. Integrations with CRMs, accounting tools, payment processors, and support desks are standard work. Anything with an API can be connected, and legacy systems without one can usually be bridged through database access or scheduled file exchange.
Do you handle SSO for enterprise clients?+
Yes — SAML, OIDC, and OAuth 2.0, either against a provider you already run or a self-hosted one such as Keycloak or Authentik. This is frequently the requirement that unblocks a stalled enterprise deal.
How do you handle security review?+
Self-hosting helps here, because data stays in your own cloud account and that is often the crux of the question. We document architecture, access control, and data flows so you have something concrete to hand a reviewer.
Can this replace several tools we currently pay for?+
Often, yes — consolidating a CRM, a project tool, and a billing product into one system is a common shape for this work. Whether it is worth doing depends on how well those tools currently fit, which we assess honestly during scoping.
Related reading

More on this topic

Client Portal Development: Build vs Buy in 2026

What a client portal should do, when to build a custom one vs use a SaaS portal, and how to launch a secure, branded portal your customers actually use.

Custom Portals & Ops Software for Agencies and Professional Services

How agencies, consultancies, and professional-services firms use custom software — client portals, billing, and operations tooling — to scale without per-seat SaaS sprawl.

Replacing Spreadsheets With Internal Tools: When and How

When a spreadsheet becomes a liability and how to replace it with a custom internal tool — the warning signs, the options, and a low-risk migration path.

How to Choose a CRM in 2026: Open-Source vs Managed

A practical 2026 CRM buying guide — open-source vs managed, total cost of ownership, customization, and how to pick a CRM that fits your sales process.

Other services

Custom Software DevelopmentCustom WebsitesOpen-Source Platform CustomizationB2C Product EngineeringAI & Automation IntegrationAPIs & IntegrationsTechnical Consulting & Architecture

Need b2b solutions?

Tell us what you're trying to build — we'll scope it and send a fixed estimate before any work starts.

Start a projectinfo@appextechnology.com