Central & Eastern Europe
Poland, Czech Republic, Hungary, Romania, the Balkans, and the post-Soviet states.
Central & Eastern Europe on the APIs.io network surfaces 24 providers mapped to this sales region — together publishing 43 indexed APIs.
Notable providers include Kontomatik, University of Warsaw, Przelewy24, Charles University, LiqPay, OPSI Slovenia, and 18 more — each profile links out to that provider’s APIs, capabilities, schemas, and governance artifacts.
Region mapping is derived from provider tags and provider-name pattern matching — it surfaces what is explicitly signalled in the structured data and intentionally does not infer further. Many providers operate across multiple regions; cross-listings are expected.
About this region
APIs from Central & Eastern Europe — Poland, Czech Republic, Hungary, Romania, Slovakia, the Balkan states, and the post-Soviet space. Strong developer-services concentration and a meaningful share of the open-source API tooling ecosystem.
Providers (24)
| Provider | Description | APIs | Rating |
|---|---|---|---|
| Kontomatik | Kontomatik is a Warsaw- and Vilnius-based PSD2-licensed open banking provider delivering bank data aggregation, KYC, credit scoring, income verification, transaction labeling, a... | 4 | developing |
| University of Warsaw | The University of Warsaw (Uniwersytet Warszawski) is Poland's largest and highest-ranked university, placed #258 in the QS World University Rankings 2025. Its public developer f... | 3 | developing |
| Przelewy24 | Przelewy24 is Poland's leading online payment gateway, providing REST APIs for bank transfer payments, card processing, BLIK mobile payments, and multi-currency payment processi... | 4 | thin |
| Charles University | Charles University (Univerzita Karlova), founded in 1348 in Prague, is the largest and oldest university in Czechia and is ranked #246 in the QS World University Rankings 2025. ... | 4 | thin |
| LiqPay | LiqPay is a Ukrainian payment platform operated by PrivatBank that provides REST APIs for accepting card payments, creating hosted payment pages, processing subscriptions, manag... | 9 | minimal |
| OPSI Slovenia | OPSI Slovenia is a national government open-data portal for Slovenia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over approximately ... | 1 | minimal |
| Official Ukrainian Government Portal | Official Ukrainian Government Portal is a open data portal open-data portal for Ukraine running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ... | 1 | minimal |
| data.zagreb.hr Official Open Data Portal | data.zagreb.hr Official Open Data Portal is a open data portal open-data portal for Croatia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf... | 1 | minimal |
| Kozadat Hungary Open Data | Kozadat Hungary Open Data is a national government open-data portal for Hungary running CKAN. It exposes the CKAN catalog API over approximately 2,283 datasets. | 1 | minimal |
| Opolskie Open Data | Opolskie Open Data is a regional government open-data portal for Poland running DKAN. | 1 | minimal |
| Czech Namedays Calendar | Lookup for a name and returns nameday date | 1 | minimal |
| Czech National Bank | A collection of exchange rates | 1 | minimal |
| Czech Television | TV programme of Czech TV | 1 | minimal |
| National Bank of Poland | A collection of currency exchange rates (data in XML and JSON) | 1 | minimal |
| OLX Poland | Integrate with local sites by posting, managing adverts and communicating with OLX users | 1 | minimal |
| Open Government, Czech Republic | Czech Republic Government Open Data | 1 | minimal |
| Open Government, Poland | Poland Government Open Data | 1 | minimal |
| Open Government, Romania | Romania Government Open Data | 1 | minimal |
| Tenders in Hungary | Get data for procurements in Hungary in JSON format | 1 | minimal |
| Tenders in Poland | Get data for procurements in Poland in JSON format | 1 | minimal |
| Tenders in Romania | Get data for procurements in Romania in JSON format | 1 | minimal |
| Tenders in Ukraine | Get data for procurements in Ukraine in JSON format | 1 | minimal |
| Transport for Budapest, Hungary | Budapest public transport API | 1 | minimal |
| Transport for Czech Republic | Czech transport API | 1 | minimal |
APIs in this region (43)
All 43 APIs.
CU Digital Repository OAI-PMH
CU Research Publications Repository OAI-PMH
LINDAT Machine Translation API
LINDAT NameTag API
Czech Namedays Calendar
Czech National Bank
Czech Television
Kontomatik Account Information Service API
Kontomatik Data Analysis API
Kontomatik PDF Parsing API
Kontomatik Report API
Kozadat Hungary Open Data CKAN Action API
LiqPay Checkout API
LiqPay Invoice API
LiqPay P2P Transfers API
LiqPay Payment Archive API
LiqPay Payment Status API
LiqPay Payouts API
LiqPay Refunds API
LiqPay Subscriptions API
LiqPay Webhooks (Callbacks)
National Bank of Poland
OLX Poland
OPSI Slovenia CKAN Action API
Official Ukrainian Government Portal CKAN Action API
Open Government, Czech Republic
Open Government, Poland
Open Government, Romania
Opolskie Open Data DKAN API
Przelewy24 Ekspres API
Przelewy24 Extended API
Przelewy24 Marketplace API
Przelewy24 REST API
Tenders in Hungary
Tenders in Poland
Tenders in Romania
Tenders in Ukraine
Transport for Budapest, Hungary
Transport for Czech Republic
Dane Badawcze UW OAI-PMH Endpoint
Dane Badawcze UW Research Data Repository REST API
USOS API (University of Warsaw)
data.zagreb.hr Official Open Data Portal CKAN Action API
Mapped via tag aliases (Central Europe, Eastern Europe, CEE, Poland, Polish, Czech, Czechia, Hungary …) and provider-name patterns (Poland, Polish, Czech, Hungary, Hungarian, Romania, Romanian, Ukraine …).