OPEX Core review
A self-hosted, modular backend for teams building a centralized cryptocurrency exchange.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OPEX Core is an open-source backend and matching engine for teams building a centralized cryptocurrency exchange. Its components cover matching, user and account management, wallets, KYC workflows, and deposit and withdrawal processes. The project is aimed at mid-market and enterprise operators that want to deploy and operate exchange infrastructure themselves, rather than adopt a hosted platform. It is Kotlin-based and uses a modular microservice architecture.
The backend’s scope is broad for an exchange foundation: it includes hot and cold wallet management, automated deposits and withdrawals, multiple trading pairs, and connectors for cryptocurrency networks and fiat payment gateways. REST and WebSocket APIs provide ways for other services or applications to interact with it. That combination may suit teams assembling an exchange stack around their own operational requirements. It is still infrastructure, not a ready-made consumer trading venue, so teams should expect to configure and host the services themselves.
OPEX Core is MIT-licensed and free to use; the project can be built and run using Maven and Docker. The published information describes self-hosted deployment and API access, but does not name integrations beyond its blockchain and fiat connectors. Choose it if your team wants an open-source backend foundation and has the capacity to operate it. Teams looking for managed hosting, a finished exchange interface, or a packaged commercial service should consider a different type of product.
OPEX Core pros and cons
- Where it wins
- Covers matching, user accounts, wallets, and exchange workflows
- Supports hot and cold wallets, deposits, and withdrawals
- Offers REST and WebSocket APIs with blockchain and fiat connectors
- Where it doesn't
- Requires operators to configure and host the services themselves
- Focuses on backend infrastructure rather than a hosted exchange platform
- No named third-party integrations are specified
OPEX Core fact sheet, pricing and score →
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