FITER

Mambu alternative: open source core banking with zero license fees

Evaluating Mambu? With Fiter you don’t pay a subscription that grows with every customer: the core runs in your cloud and the code is yours.

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What you really pay for when you choose Mambu

Your growth raises your bill

With MambuIn a SaaS subscription model, the platform cost tracks the size of your business. Every new customer you win is also paid for in your core.

With FiterNo license: scaling your portfolio doesn’t change what you pay for the core.

Your core lives in someone else’s platform

With MambuThe platform, its versions and its changes are run by the vendor. Your operation adapts to their release calendar.

With FiterRuns in your cloud or your data center, with your controls and your timing.

Leaving means starting over

With MambuWhen a subscription ends you don’t keep the system: you take your data and migrate to another platform.

With FiterThe code is yours forever. Switch providers without switching cores.

Fiter vs Mambu: 9 criteria, 9 advantages

The criteria that decide what your core costs today, what it will cost five years from now and what it would cost to leave.

CriterionFiter (Apache Fineract)Mambu
License model and costFiter advantage: Zero license fees. Apache 2.0: no charge per account, per customer or per transaction. Your portfolio grows and your core cost stays put.SaaS subscription: you pay every year to use the platform, and the cost grows with your business.
Open source or proprietaryFiter advantage: Open source. Your team, your auditors and your regulator can review every line that processes your portfolio.Closed source. You can’t see or audit the code that processes your portfolio.
Deployment optionsFiter advantage: Wherever you decide: AWS, Azure, GCP, local cloud or on-premise. You meet your regulator’s requirements without asking anyone’s permission.SaaS operated by Mambu: you pick the cloud and region, but the vendor controls the platform, its versions and its changes.
Data ownership and portabilityFiter advantage: Your data, in your database, on your infrastructure. Query it, export it and back it up whenever you want.Your data lives on a third-party platform. Getting it out depends on their tools and your contract.
Vendor lock-in and exit costFiter advantage: Zero lock-in. The code is yours forever: you can switch service providers without switching cores.Stop paying and you have no core. Leaving forces a full migration to another platform.
Product customizationFiter advantage: No ceiling. Individual and group lending, microfinance, savings and Islamic finance (Murabaha) on the same core, built around your portfolio.You configure within what the platform allows. Anything outside the catalog waits for the vendor’s roadmap.
Support modelFiter advantage: Direct access to the team that implemented your core, with 24/7 support tiers available. Not an anonymous global help desk.Global vendor headquartered in Amsterdam. Your operation is one of many customers worldwide.
Community and roadmapFiter advantage: Apache Software Foundation, with Fiter on the PMC: we vote on where the product goes. No acquirer can change its direction.Mambu sets the roadmap according to its global commercial priorities.
Typical time to go liveFiter advantage: 8 to 16 weeks depending on scope, with a parallel run and no disruption to your operation.Quick to start, expensive to stay: the subscription runs for as long as your operation does.
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Why teams choose Fiter

1

Your cost doesn’t grow with your customers

Apache 2.0 means zero license fees: you don’t pay per account or per transaction. With a subscription or licensed core, every new customer adds to the bill. With Fiter, growth doesn’t cost you more.

2

We sit where the product is decided

Fiter has members on the Apache Fineract PMC. When your portfolio needs something the core doesn’t do, we don’t open a ticket with a third party: we propose it, vote on it and build it.

3

100+ implementations in 40 countries

Banks, fintechs, credit unions and microfinance institutions already run on Apache Fineract with Fiter, including Islamic finance (Murabaha). If your product isn’t standard, we configure it on the same core.

What migrating from Mambu looks like

Migrating from Mambu to Apache Fineract with Fiter means taking back control. Together we decide where your core will run (your cloud or on-premise), and from there the work is mapping every loan and savings product, every account and every journal entry. We export the portfolio, load it into Fineract and run both systems in parallel until reconciliation closes. On cutover day you stop paying a subscription and start owning your core.

Total timeline8 to 16 weeks, depending on project scope

  1. Assessment

    We review your portfolio, products, integrations (channels, payments, credit bureau, regulator) and reports. You get a fixed scope at a fixed price.

  2. Product and data mapping

    Every loan and savings product is configured in Fineract and every field in your current system is mapped to the new model. Your operations and accounting teams sign it off.

  3. Parallel run

    We load your portfolio and run both systems side by side with daily reconciliation of balances, interest and journal entries. Nothing is switched off until the numbers match.

  4. Go-live

    Cutover at a month-end close with verified accounting, user training and hands-on support from our team during the first weeks.

Frequently asked questions

In 30 minutes we show you origination and accounting close for a loan product side by side with what Mambu does today.

We show you Apache Fineract with a case like yours, and you leave with what you need to decide: total cost with no license, a migration plan and who supports you.

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Trademarks mentioned belong to their respective owners. Public information reviewed in November 2026.