Firefly III
Firefly III ships seven develop builds in six days, still with no changelog attached.
Comparison · Finance
InvoiceShelf vs Stigg
A side-by-side editorial comparison of InvoiceShelf and Stigg — release velocity, themes, recent moves, and the top alternatives to consider.
InvoiceShelf vs Stigg: at a glance
What is InvoiceShelf?
InvoiceShelf 3.0 alphas add bills and suppliers, moving it from invoicing into payables.
Five InvoiceShelf 3.0 alphas shipped in five days. alpha.11 added purchasing (suppliers, bills, supplier credits, payments and refunds) and patched two unauthenticated PHP remote code execution flaws in the Docker image. Later alphas added module API 1.4 with bundled dependencies, EN 16931 e-invoicing with ZUGFeRD / Factur-X hybrid PDFs, a notification bell with automatic payment reminders, and an iOS app headed for TestFlight.
What is Stigg?
Stigg adds credit reservation and settlement for AI operations days after its agent SDK.
Stigg can now reserve credits before an AI operation starts and settle the actual cost when it finishes. It follows the beta Agent Governance SDK, an open-source library built on Stigg's entitlements engine. Earlier October releases added an Airwallex billing backend, credit usage grouped by feature and a Stripe Projects listing.
InvoiceShelf vs Stigg: editorial side-by-side
InvoiceShelf
6.3FINANCE
InvoiceShelf 3.0 alphas add bills and suppliers, moving it from invoicing into payables.
◆ Current state
Five InvoiceShelf 3.0 alphas shipped in five days. alpha.11 added purchasing (suppliers, bills, supplier credits, payments and refunds) and patched two unauthenticated PHP remote code execution flaws in the Docker image. Later alphas added module API 1.4 with bundled dependencies, EN 16931 e-invoicing with ZUGFeRD / Factur-X hybrid PDFs, a notification bell with automatic payment reminders, and an iOS app headed for TestFlight.
◆ Where it's heading
3.0 is turning InvoiceShelf from an invoice generator into a small-business accounting app: payables next to receivables, EU-compliant e-invoices, a module ecosystem, and native mobile apps. The pace suggests the team is finishing features before a beta rather than stabilizing.
◆ Prediction
Expect more alphas filling in accounting pieces and modules built on API 1.4/1.5, with the iOS app appearing on TestFlight; the entries don't show a beta date.
Stigg
6.3FINANCE
Stigg adds credit reservation and settlement for AI operations days after its agent SDK.
◆ Current state
Stigg can now reserve credits before an AI operation starts and settle the actual cost when it finishes. It follows the beta Agent Governance SDK, an open-source library built on Stigg's entitlements engine. Earlier October releases added an Airwallex billing backend, credit usage grouped by feature and a Stripe Projects listing.
◆ Where it's heading
Credits have become Stigg's main pricing unit, and the product is adapting them to AI workloads whose cost isn't known up front. Reserve and settle, together with the governance SDK, turns the entitlements engine into a spending control for agents.
◆ Prediction
Expect the governance SDK to use reservations directly for agent limits, and more reporting on reserved versus settled usage.
Alternatives to InvoiceShelf and Stigg
Other Finance products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either InvoiceShelf or Stigg.
Shift4
Shift4 starts its Q4 venue rollout in canary while Customer Hub adds enterprise modifiers.
GOAT.tax
GOAT.tax adds Form 6765 Section G reporting for large R&D credit filers.
Kill Bill
Kill Bill keeps two release lines alive with small invoice-template changes.
Zluri
Zluri is turning SaaS management into identity governance, and Segregation of Duties is the pivot.
DocuSign
DocuSign rebuilt eSignature with AI and is now targeting the full contract lifecycle.
See all InvoiceShelf alternatives → · See all Stigg alternatives →
Recent activity from InvoiceShelf and Stigg
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 21h agoStiggControl subscription cancellation behavior directly from the Stigg app
- 1d agoStiggOne-click Airwallex integration via OAuth
- 3d agoStiggCredit Reservation & Settlement
- 3d agoInvoiceShelf3.0 alpha.15: iOS app heads to TestFlight
- 5d agoInvoiceShelf3.0 alpha.14: notifications and unpaid-invoice reminders
- 5d agoInvoiceShelf3.0 alpha.13: EN 16931 e-invoices and ZUGFeRD PDFs
- 5d agoInvoiceShelf3.0 alpha.12: modules can bundle libraries and extend screens
- 6d agoStiggAgent Governance SDK (beta) ⚡
- 7d agoInvoiceShelf3.0 alpha.11: purchasing, bills and a PHP RCE fix ⚡
- 9d agoStiggCard brand and digital wallet details for payment methods
- 11d agoStiggAbility to group credit usage by feature ID
- 1mo agoInvoiceShelf3.0 alpha.10: owners install official modules on managed hosts
Frequently asked questions
What is the difference between InvoiceShelf and Stigg?
They serve adjacent needs but don't currently overlap on shipped themes. InvoiceShelf and Stigg are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is InvoiceShelf better than Stigg?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. InvoiceShelf and Stigg are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.
What are the best alternatives to InvoiceShelf?
Top InvoiceShelf alternatives in Finance are ranked by recent ship velocity. Browse the "InvoiceShelf alternatives" section above for the current picks, or visit /alternatives/invoiceshelf for the full list with editorial commentary on each.
What are the best alternatives to Stigg?
Top Stigg alternatives in Finance are ranked by recent ship velocity. Browse the "Stigg alternatives" section above for the current picks, or visit /alternatives/stigg for the full list with editorial commentary on each.