Theme · updated weekly

Open Source in Finance — SaaS tools & trends 2026

6 products Sparkpulse tracks are shipping around open source in Finance. The fastest-moving right now are Kill Bill, Firefly III and Invoice Ninja, ranked by how frequently they ship meaningful updates. Below: every tracked product carrying this theme, updated from release data.

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Products shipping around open source

#01Kill BillKill Bill grinds out invoice-reliability fixes on a mature 0.24.x line.5.0alternatives →

#02Firefly IIIPublic feed is all automated nightly dev builds, so real product direction is invisible here5.0alternatives →

#03Invoice NinjaInvoice Ninja's point-release train adds passkeys and global tags amid steady fixes5.0alternatives →

#04InvoicePlaneInvoicePlane's beta cycle is mostly security hardening and PHP modernization0.0alternatives →

#05Maybe FinanceMaybe builds out onboarding and Plaid, then the changelog goes quiet.0.0alternatives →

#06LagoLago is layering AI agents and enterprise gates onto an already-deep usage-based billing engine.0.0alternatives →

Frequently asked questions about open source

Which SaaS tools ship open source in Finance in 2026?

Kill Bill, Firefly III, Invoice Ninja, InvoicePlane, Maybe Finance, and 1 more — the open source products Sparkpulse tracks in Finance, ranked by shipping velocity from verified changelogs.

What's the fastest-moving open source product right now?

Kill Bill, with a velocity score of 5.0 out of 10 in Finance, based on how frequently it ships meaningful updates.

How many products are shipping around open source?

Sparkpulse currently tracks 6 products carrying the open source theme in Finance, updated continuously from verified release data.