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Comparison · Finance
SolidInvoice vs Stigg
A side-by-side editorial comparison of SolidInvoice and Stigg — release velocity, themes, recent moves, and the top alternatives to consider.
SolidInvoice vs Stigg: at a glance
What is SolidInvoice?
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
What is Stigg?
Stigg moves its entitlements and credit checks inside agent orchestrators and gateways.
Stigg now runs inside agent orchestration layers, applying entitlements, credits and budgets to each step of an agent run, and its Agent SDK supports solo.io and agentgateway out of the box. It also lets customers bill subscriptions through Airwallex invoices and payment links. This lands a day after new pricing with a free plan and monthly billing, and three days after Usage Governance went GA.
SolidInvoice vs Stigg: editorial side-by-side
SolidInvoice
5.0FINANCE
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
◆ Current state
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
◆ Where it's heading
After the large 3.0 release in June, work has moved to hardening: upgrade paths, packaging (Snap, static PHP builds) and correctness in payments and reporting. The mention of MCP payments shows AI-agent access is already wired into billing, though the entries don't detail it.
◆ Prediction
Expect more 3.1.x patches on packaging and payment edge cases; the entries don't signal what 3.2 will contain.
Stigg
7.5FINANCE
Stigg moves its entitlements and credit checks inside agent orchestrators and gateways.
◆ Current state
Stigg now runs inside agent orchestration layers, applying entitlements, credits and budgets to each step of an agent run, and its Agent SDK supports solo.io and agentgateway out of the box. It also lets customers bill subscriptions through Airwallex invoices and payment links. This lands a day after new pricing with a free plan and monthly billing, and three days after Usage Governance went GA.
◆ Where it's heading
Stigg is placing its billing engine at the points where AI agents spend money: the orchestrator, the gateway and credit reservation before each operation. Billing-backend breadth, now Airwallex invoicing, keeps pace in the background.
◆ Prediction
Expect more gateway and orchestrator integrations in the Agent SDK and its move out of beta. Billing backends will likely keep widening around Airwallex and its peers.
Alternatives to SolidInvoice 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 SolidInvoice or Stigg.
Shift4
Shift4 Venue Q4-R2 is on canary venues now, with global release set for November 17.
Payhawk
Payhawk adds SWIFT payment tracking and a DualEntry ledger sync as ERP coverage widens
TaxDome
TaxDome Pipelines now remember your filters, and long task names stop getting cut off.
LNbits
LNbits 1.7.1 follows the urgent 1.7.0 fix by rotating auth keys.
Kolleno
Kolleno is stretching from collections software toward the whole cash cycle.
See all SolidInvoice alternatives → · See all Stigg alternatives →
Recent activity from SolidInvoice and Stigg
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoSolidInvoiceSolidInvoice 3.1.3 fixes payment settling, clears 12 advisories
- 9d agoStiggStigg Now Runs Inside Your Agent Orchestrator
- 9d agoStiggSupport for solo.io and agentgateway in the Agent SDK
- 10d agoStiggBill subscriptions using invoices and payment links with Airwallex
- 10d agoStiggStigg's New Pricing Is Now Generally Available ⚡
- 12d agoStiggUsage Governance Is Now Generally Available
- 15d agoStiggIntroducing Stigg's New Navigation
- 15d agoSolidInvoiceSolidInvoice 3.1.0: custom invoice templates, invitation expiry
- 15d agoSolidInvoiceSolidInvoice 3.1.1: post-3.1.0 bug fixes
- 15d agoSolidInvoiceSolidInvoice 3.1.2 fixes the broken in-app upgrade path
- 2mo agoSolidInvoiceInvoice lines now say '1 hour' instead of '1 hours'
- 4mo agoSolidInvoiceRelease 3.0.1
Frequently asked questions
What is the difference between SolidInvoice and Stigg?
They serve adjacent needs but don't currently overlap on shipped themes. Stigg is currently shipping more aggressively (velocity 7.5 vs 5.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is SolidInvoice better than Stigg?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stigg is currently shipping more aggressively (velocity 7.5 vs 5.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.
What are the best alternatives to SolidInvoice?
Top SolidInvoice alternatives in Finance are ranked by recent ship velocity. Browse the "SolidInvoice alternatives" section above for the current picks, or visit /alternatives/solidinvoice 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.