# PART 2: Existing subsystems to reuse instead of building be… (1)

Checks 1 to 4 of 6, each with its evidence

## What you can do here

- **Verify 1: Apache Fineract | Open-source core banking:…**: Verify: Apache Fineract | Open-source core banking: clients, loans, savings,…
- **Verify 2: Mifos X web app (openMF/web-app) | Back-off…**: Verify: Mifos X web app (openMF/web-app) | Back-office user interface for Fin…
- **Verify 3: Apache Fineract CN | Earlier microservices…**: Verify: Apache Fineract CN | Earlier microservices rewrite | UNKNOWN: apache/…
- **Verify 4: Kill Bill (billing, adjacent) | Subscriptio…**: Verify: Kill Bill (billing, adjacent) | Subscription billing and invoicing |…
- **Back**
- **Open Meet the research: 2.2 Core banking: evi**