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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360TravelSIM - eSIM Sales, Client and Reseller Platform
Telecom and travel
A connected eSIM commerce ecosystem with three Next.js applications, a Golang API, online payments and integrations with an eSIM supplier and ERP.
SMSFlare - SMS to Voice SIP Platform
Messaging and telecom
Telecom platform work around SMS-to-voice SIP delivery, routing logic and operational messaging workflows.
A WordPress company-profile website presenting wholesale SIP trunks, satellite termination and managed VoIP services to global carriers.
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.
CallInmarsat - Telecom Service Website
Telecom and satellite communication
A clear web presence for satellite and telecom communication services.
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.
Hellasfone - Telecom Customer Portals, vPBX and ERP
Telecom, VoIP and cloud PBX
A connected telecom operations ecosystem spanning WordPress sales journeys, separate Retail and vPBX customer portals, a Go API, and a Laravel ERP back office.



















