in4system software house
Latest work

Real projects, practical results

A selection of telecom, CRM/ERP, SaaS, client portal, website and integration projects delivered by in4system.

Case studies

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All projects
Websites & Web Apps
CRM & ERP Systems
E-commerce & Shops
SaaS Platforms
VoIP, SMS & Telecom
SaaS Platforms
CRM & ERP Systems
VoIP, SMS & Telecom

A connected eSIM commerce ecosystem with three Next.js applications, a Golang API, online payments and integrations with an eSIM supplier and ERP.

VoIP, SMS & Telecom

Telecom platform work around SMS-to-voice SIP delivery, routing logic and operational messaging workflows.

Websites & Web Apps
VoIP, SMS & Telecom

EasyVoipCall - WordPress Telecom Company Website

Telecom and wholesale VoIP

Project year: 2025

A WordPress company-profile website presenting wholesale SIP trunks, satellite termination and managed VoIP services to global carriers.

VoIP, SMS & Telecom
CRM & ERP Systems
SaaS Platforms

EasyVoIPCall - Wholesale VoIP ERP, LCR and Client Portals

Wholesale VoIP and international telecom

A connected wholesale VoIP operating ecosystem with a Laravel ERP, dedicated Go APIs, automated rate updates and LCR, client self-service, billing, reporting, secured interconnections and commission-based sales.

VoIP, SMS & Telecom

CallInmarsat - Telecom Service Website

Telecom and satellite communication

A clear web presence for satellite and telecom communication services.

Websites & Web Apps
E-commerce & Shops
VoIP, SMS & Telecom

Hellasfone - Multilingual WordPress Telecom Website & Pricing

Telecom and VoIP services

Project date: May 2026

A multilingual WordPress frontend for telecom sales, with configurable pricing tables, API integrations and PayPal, IRIS and Alpha Bank payment flows.

VoIP, SMS & Telecom
CRM & ERP Systems
SaaS Platforms

A connected telecom operations ecosystem spanning WordPress sales journeys, separate Retail and vPBX customer portals, a Go API, and a Laravel ERP back office.