Kolpolok Limited

VPN Application Development, Mobile Application, Web Application, Desktop Application, OTT Application, Resource Augmentation


Best VPN App Development Company in the World. ✅ Top-Rated Plus Upwork Contractor ✅ 100%+ Job Success Rating ✅ 90% Above Re-hire Rate We are Bangladesh based Software Development Company having extensive experience in VoIP and VPN App Development. We have been promoted by some highly experienced Professionals dedicated to provide total IT solutions under one roof. It possesses not only the latest technology but also the most knowledgeable and experienced hands to offer the most user-friendly customized solutions. Our Services: As an agency, we have an in-house team of handpicked individuals in the following areas: ✅ VPN app Development. Open Connect, Open VPN, Wireguard, Shadowsocks ✅ VoIP app Development. Opensource and Private SDK ✅ iOS & Android Native and Cross-platform App Development ✅ Fullstack Web App Development ✅ Website Development Mobile Application development: - Objective C, Swift - Java - Cross-Platform (ionic) Web Application development: - Laravel Framework - Codeigniter Framework - Wordpress - MySQL Website Development: - Wordpress VOIP Technology Expertise: - Open source PJSIP for VOIP client Application [Softphone] - Open source Asterisk for VOIP server Application [Billing Software] - Open source Kamailio for SIP Proxy - XMPP, Jabber and Openfire for Instant Messaging App - OTT app development experience VPN Technology Expertise: - Open VPN (Android and iOS) - Open Connect (Android and iOS) - Wireguard, Shadowsocks (Android and iOS) Custom Project Development Experiences: - VPN Client APP & Admin/Management Portal - Mobile Dialer / Softphone - Billing Software for Softswitch - Instant Messaging Software - Live Chat Application - Hospital Management System

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Mobile Development

✅ Skilled in iOS & Android Native & Cross-platform App Development ✅ Objective C, Swift, Java, Kotlin, ionic, Cordova, PhoneGap ✅ SQLite , Realm, Firebase ✅ VoIP app Development. Opensource and Private SDK

Web Development


  1. MySQL
  2. CodeIgniter
  3. Kamailio
  4. iOS Development
  5. PHP
  6. VoIP Software
  7. Objective-C
  8. OpenVPN
  9. VPN
  10. Android App Development
  11. Laravel
  12. WooCommerce
  13. JavaScript
  14. Session Initiation Protocol
  15. WordPress

Featured clients

100% Job Success
Top Rated

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Member since

Feb 18, 2016

Company information

Agency size

11-50 workers

Year founded


Client focus

Large business

Medium business

Very small business

Small business

Bengali: Native or Bilingual
English: Fluent
Hindi: Conversational
Urdu: Conversational


BASIS National ICT Award 2022