Custom CRM & ERP Software Built Around Your Business Processes
We build bespoke CRM and ERP systems for businesses that have outgrown Salesforce, SAP, or HubSpot — or that need software tailored precisely to their sales, operations, and finance workflows. No per-seat licensing. No adapting your business to the tool. Serving the USA, UK, Canada, and Europe.
What is Custom CRM & ERP Development?
Quick Answer — What is Custom CRM & ERP Development?
Custom CRM (Customer Relationship Management) and ERP (Enterprise Resource Planning) development means building software tailored to your exact business processes — rather than purchasing an off-the-shelf platform like Salesforce, HubSpot, or SAP that requires adapting your business to fit the tool. SpiderHunts Technologies builds bespoke CRM and ERP systems that fit your workflow, eliminate per-seat licensing costs, and integrate deeply with your existing software stack.
- CRM Purpose
- Manage leads, sales pipeline & client relationships
- ERP Purpose
- Manage operations, inventory, finance & supply chain
- Build Time
- 8–20 weeks
- Cost
- £12,000–£100,000+
- Stack
- React, Python, PostgreSQL, REST APIs
Custom CRM & ERP Systems We Build
Generic CRM and ERP platforms are built for the average business — not yours. As you scale, the gaps between what the software does and what your business needs become expensive workarounds, per-seat costs, and process bottlenecks. SpiderHunts Technologies builds systems that match your exact workflow.
Custom CRM Systems
Sales pipeline management, lead tracking, contact management, email integration, activity logging, and reporting — built around your exact sales process instead of forcing you into Salesforce's model.
Custom ERP Systems
Operations management covering inventory, procurement, production, finance, and HR — unified in one system that maps directly to how your business runs.
Client Portals
Secure online portals where your clients can view project status, invoices, documents, raise support tickets, and communicate with your team — white-labelled to your brand.
Reporting & BI Dashboards
Custom business intelligence dashboards pulling data from multiple sources — sales, operations, finance, and marketing — into one real-time view for decision-making.
Legacy CRM/ERP Migration
Migrate from legacy CRM or ERP systems to a modern, maintainable platform — with full data migration, user training, and zero downtime switchover.
CRM/ERP API Integrations
Connect your CRM or ERP to accounting (Xero, QuickBooks), e-commerce (Shopify), marketing (Mailchimp, HubSpot), and payment systems (Stripe) — full bi-directional sync.
Why Off-the-Shelf CRM & ERP Fails Enterprise Businesses
Generic platforms like Salesforce, SAP, and HubSpot are engineered for the median business. The further your operations deviate from that median, the more expensive and painful the compromises become.
✕ Without Custom CRM/ERP
- £50–£300 per user per month that scales with your headcount
- Months of consultancy to configure the platform to your process
- Customisations lost on every major update
- Business processes adapted to fit the software
- Data siloed across multiple disconnected tools
- Vendor lock-in with no exit strategy
✓ With SpiderHunts Custom CRM/ERP
- One-time build cost — unlimited users, no per-seat fees
- Software built around your exact workflow from day one
- You own the codebase — customise anything at any time
- Competitive advantage from proprietary tools competitors can't replicate
- All data in one unified system you control
- Full data ownership and portability
Custom CRM & ERP Projects We've Delivered
Sales CRM for B2B Agency
Built a custom CRM for a recruitment agency replacing Bullhorn — with candidate-job matching, automated interview scheduling, client pipeline tracking, and Xero billing integration.
Manufacturing ERP
Built a custom ERP for a manufacturer covering purchase orders, bill of materials, production scheduling, inventory management, and customer invoicing in one unified system.
Property Management Platform
Built a custom CRM for a real estate agency managing 5,000+ properties — landlord and tenant portals, maintenance ticketing, rent collection tracking, and automated renewal reminders.
Legal CRM
Built a matter management and client CRM for a law firm — replacing manual spreadsheets with case tracking, time recording, document management, and client portal access.
Distribution ERP
Built a wholesale distribution ERP covering customer ordering, warehouse management, delivery scheduling, route optimisation, and financial reconciliation.
Multi-Site Retail CRM
Built a custom CRM for a multi-location retail chain — centralising customer data, loyalty programme management, and purchase history across 20 stores.
Industries We Build CRM & ERP For
Construction & Property
Project cost tracking, subcontractor management, site documentation, compliance workflows, and client-facing portals for construction and real estate businesses.
Legal & Professional Services
Matter management, time recording, document automation, client billing, and case pipeline tracking for law firms and professional service providers.
Manufacturing
Bill of materials, production scheduling, inventory control, quality management, and procurement — unified ERP built around your factory floor processes.
Wholesale & Distribution
Customer order management, warehouse operations, delivery scheduling, route optimisation, and financial reconciliation for distributors and wholesalers.
Healthcare
Patient relationship management, appointment scheduling, referral tracking, and clinical workflow systems — built with GDPR and data security at the core.
Recruitment & Staffing
Candidate databases, job matching, interview pipelines, client account management, and contractor payroll integration for recruitment and staffing agencies.
Our CRM & ERP Development Process
Process Mapping & Discovery
We map your existing workflows — sales, operations, finance, and HR — and identify exactly what the system needs to do. We document every process, integration point, and data source before a single line of code is written.
Architecture & Design
We design the data model, system architecture, API layer, user roles, and interface wireframes. You review and approve everything before development begins — no surprises mid-build.
Agile Build
We build in 2-week sprints, demoing working functionality at each cycle. You see real progress continuously — not a 12-week black box followed by a big reveal. Feedback is incorporated in real time.
Migration, Training & Go-Live
We migrate your existing data, train your team, and manage the switchover — with a parallel running period to ensure confidence before full go-live. Ongoing support included post-launch.
Custom CRM/ERP vs Salesforce vs HubSpot — Which Is Right?
| Feature | Custom CRM/ERP | Salesforce | HubSpot |
|---|---|---|---|
| Fits your exact workflow | 100% — built around it | Configurable but rigid | Limited customisation |
| Per-seat cost | None — unlimited users | £75–£300/user/month | £45–£120/user/month |
| Customisation limits | None — you own the code | Apex/API limits apply | Workflow limits |
| Data ownership | Full — your servers | Salesforce servers | HubSpot servers |
| Integration flexibility | Any API or system | AppExchange only | HubSpot marketplace |
| Implementation time | 8–20 weeks | 3–12 months | 1–6 months |
| Long-term TCO | Lower after year 2 | Grows with headcount | Grows with contacts |
Our CRM & ERP Technology Stack
Every technology we use is chosen for production-grade reliability, maintainability, and long-term support. We build on open, well-documented frameworks — so your team or any developer can maintain and extend the system after handover.
Custom CRM & ERP Development — USA, UK, Canada & Europe
SpiderHunts Technologies is a UK-registered software development company trusted by businesses across the USA, United Kingdom, Canada, and Europe. We've delivered custom CRM and ERP systems for clients in manufacturing, legal, property, distribution, and professional services — all governed by local data protection standards.
USA — Custom CRM & ERP
Custom CRM and ERP development for US businesses. AWS US regions. CCPA-aware data handling. Experience across manufacturing, distribution, and professional services sectors.
UK — Custom CRM & ERP
UK-based development team. London office. GDPR-compliant by design. Companies House and HMRC integration experience. ICO-aware data residency and audit logging.
Canada — Custom CRM & ERP
Custom CRM and ERP for Canadian businesses. PIPEDA compliance built in. AWS Canada region support. Experience with Canadian financial services and healthcare sectors.
Europe & South Africa
GDPR-native architecture for EU markets. Data residency in EU regions available. South African businesses served with POPIA-compliant data handling built in.
Frequently Asked Questions About Custom CRM & ERP Development
What is the difference between a CRM and an ERP?
A CRM (Customer Relationship Management) system manages your front-office processes — leads, sales pipeline, customer communication, and account management. An ERP (Enterprise Resource Planning) system manages your back-office operations — inventory, procurement, production, finance, and HR. Some businesses need both; some only need one. SpiderHunts builds both, separately or integrated.
How much does custom CRM development cost?
A focused custom CRM typically costs £12,000–£40,000. A full CRM with client portal, reporting, and accounting integration costs £30,000–£80,000. A comprehensive ERP costs £40,000–£100,000+. We provide a fixed-price quote after a free discovery call.
How long does custom CRM/ERP development take?
A focused CRM typically takes 8–12 weeks. A full ERP with multiple modules takes 16–24 weeks. We deliver in 2-week sprint cycles so you see progress continuously.
Can you integrate with our existing accounting software?
Yes. We integrate with Xero, QuickBooks, Sage, and other accounting platforms — bi-directional sync of invoices, payments, contacts, and products.
Can you migrate data from our existing CRM or ERP?
Yes. Data migration is a standard part of every CRM/ERP project. We extract, clean, transform, and import your existing data — from Salesforce, HubSpot, spreadsheets, or legacy databases.
Do we own the software?
Yes — 100%. SpiderHunts transfers full intellectual property ownership upon project completion. You receive the complete codebase, database schema, documentation, and deployment access. No licensing fees.
Is the CRM/ERP GDPR compliant?
Yes. All systems we build are GDPR-compliant by design: data encryption at rest and in transit, role-based access controls, audit logging, right-to-erasure functionality, and data residency options.
Can the system grow as our business grows?
Yes. We architect all CRM and ERP systems for scalability — microservices where appropriate, horizontal scaling, and a modular design that lets you add new functionality as your business grows.
Related Services
Other services businesses combine with CRM & ERP development
Ready to Replace Your CRM or ERP?
Tell us how your current system is failing you. Book a free 30-minute discovery call and we'll design a bespoke CRM or ERP that fits your exact processes — with a clear scope and fixed price.