Custom API Integrations with Real-World Systems
In today’s digital world, API integrations are not an extra – they’re essential. At Wollow, we have hands-on experience across 20+ real-world APIs, enabling businesses to connect, automate, and grow.
Our real API integrations include:
- Payment systems:
Stripe, PayPal, Adyen, Paysera, Borika, EasyPay, Docdata, Klarna, and multiple Bulgarian bank APIs - Marketplaces & feeds:
OLX, external catalogs, affiliate platforms - ERP & CRM:
Salesforce, Zoho, TexKernel (AI recruitment tech), Elasticsearch - Communications:
Viber, Twilio, Plivo, CallFlow, Infobip, SendGrid, Maileon - Automotive:
Mobile.bg API, Cars.bg API – full listings & price sync - Events & travel:
GetYourGuide API, Viator API, Tiqets API – dynamic bookings and activities
We also build internal APIs, including versioned, documented, and secure endpoints for apps, partners, and custom tools. We focus on:
-
secure authentication (OAuth 2.0, API keys)
-
failover logic and retry mechanisms
-
logging, reporting, request analytics
Contact us to unlock your business through powerful, well-managed integrations.
Projects
Web-Based Pawn Shop Software Ares
Ares 5.0 is a fully web-based platform developed by Wollow, purpose-built for managing pawnshop operations. More than just software, Ares is a complete business solution, currently powering over 200 pawnshop branches across Bulgaria and North Macedonia.
Graphic Design
Software
Predictions and Betting
SRS Documentation
JavaScript
DevOps
UI/UX Design
Ruby on Rails
Cloud computing
Payment System Integration
Government and Public
Software-as-a-Service
Custom software
WMS Software
Web-Based Pawn Shop Software Ares
Smart Ticketing B2B & B2C Platform
Classic Exclusive, a prestigious Austrian production company known for organizing elite classical concerts featuring Mozart and Vivaldi in the world-renowned Musikverein Vienna and the legendary Golden Hall.
jQuery
Software
Web
Responsive Design
Ruby on Rails
Payment System Integration
Government and Public
eCommerce
Custom software
Smart Ticketing B2B & B2C Platform
Custom Bus Ticket Software for Transport Companies
BTMS is a custom ticketing system for bus operators and agents. Manage routes, ticket sales, reports, and bookings with integration to BGRazpisanie.com – Bulgaria’s top transport platform.
jQuery
Software
SRS Documentation
JavaScript
Responsive Design
UI/UX Design
RESTful API
Payment System Integration
Government and Public
Transportation and Logistics
Travel and Hospitality
Custom Bus Ticket Software for Transport Companies
Custom Bus Ticketing Software Built for Group OOD
BTMS was developed by Wollow in 2009 as a tailor-made solution for Group OOD. A unique bus ticketing system, refined over 15+ years and connected to Bulgaria’s leading transport platform BGRazpisanie.com.
jQuery
Software
JavaScript
DevOps
Payment System Integration
Travel and Hospitality
Web
UI/UX Design
Transportation and Logistics
Custom Bus Ticketing Software Built for Group OOD
Media
Top Ruby on Rails Developers in Bulgaria, Wollow is # 3 in the statistics for 2021
Top Ruby on Rails Developers in Bulgaria, Wollow is # 3 in the statistics for 2021.
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Top Google App Engine Developers in Bulgaria, Wollow is # 3 in the statistics for 2021
Top Google App Engine Developers in Bulgaria, Wollow is # 3 in the statistics for 2021.
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Top 10+ IT Companies in Bulgaria (2022) - TechBehemoths
First place in this special ranking - Wollow!
Top IT Companies in Bulgaria specialized in branding, UX design, web design, web development, social media marketing, mobile apps.
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Top Software Development Companies in Bulgaria by VisualObjects.com
Top Software Development Companies in Bulgaria, Wollow is # 9 in the statistics for 2021.
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