Kill Bill
Kill Bill keeps two release lines alive with small invoice-template changes.
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 let Claude, ChatGPT and Cursor draft and send invoices.
InvoiceShelf is pushing 3.0 through public alphas at a rate of several a week, each marked not for production. Alpha.5 added an MCP server so AI assistants can read, draft and send documents with the connecting user's permissions. Later alphas add role presets, user administration for the super admin, official modules on managed installs and a Docker image that runs on a read-only filesystem, alongside a steady stream of security fixes.
What is Stigg?
Stigg is moving from pricing plumbing to AI-operated contracts, and now ships inside Stripe Projects.
Stigg's recent releases cover two layers. The runtime got faster: sub-10ms entitlement checks and fail-safe resilience now reach the REST SDKs, and Plans and Add-ons load faster in the app. The commercial layer grew as well, with a natural-language contracts AI skill, a dedicated credit configuration section, and export-failure webhooks. Stigg is now also listed as a provider on Stripe Projects.
InvoiceShelf vs Stigg: editorial side-by-side
InvoiceShelf
6.3FINANCE
InvoiceShelf 3.0 alphas let Claude, ChatGPT and Cursor draft and send invoices.
◆ Current state
InvoiceShelf is pushing 3.0 through public alphas at a rate of several a week, each marked not for production. Alpha.5 added an MCP server so AI assistants can read, draft and send documents with the connecting user's permissions. Later alphas add role presets, user administration for the super admin, official modules on managed installs and a Docker image that runs on a read-only filesystem, alongside a steady stream of security fixes.
◆ Where it's heading
3.0 is turning a single-company invoicing app into something a hosting provider can run for many customers: role presets across companies, provider-controlled module installs, a separate customer-portal host and a locked-down container. The security fixes (guessable document links, SSRF through mail settings, a setup token that acted as super-admin) show the multi-tenant hardening is still catching up with the feature work.
◆ Prediction
Expect more alphas that close security issues and fill out hosted-provider controls before a beta; the entries show no beta date.
Stigg
6.3FINANCE
Stigg is moving from pricing plumbing to AI-operated contracts, and now ships inside Stripe Projects.
◆ Current state
Stigg's recent releases cover two layers. The runtime got faster: sub-10ms entitlement checks and fail-safe resilience now reach the REST SDKs, and Plans and Add-ons load faster in the app. The commercial layer grew as well, with a natural-language contracts AI skill, a dedicated credit configuration section, and export-failure webhooks. Stigg is now also listed as a provider on Stripe Projects.
◆ Where it's heading
Contract Management went from beta in August to AI-operable in September, which positions Stigg as the system of record for sales-led deals as well as self-serve plans. The Stripe Projects listing shifts attention to acquisition: Stigg is placing itself where developers already set up billing, rather than waiting to be integrated afterwards.
◆ Prediction
Expect more distribution-channel listings and agent-facing skills alongside Contract Management leaving beta; the entries don't show which will come first.
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.
Firefly III
Firefly III ships four develop builds in one day, still with no changelog attached.
Shift4
Shift4's Q3-R3 venue bundle gets its first global patch eight days after rollout.
Zluri
Zluri is turning SaaS management into identity governance, and Segregation of Duties is the pivot.
GOAT.tax
GOAT.tax adds multi-company support, partner white-labeling, and expands state R&D credit coverage
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.
- 5d agoStiggStigg is now available on Stripe Projects
- 9d agoStiggFaster Plans & Add-ons
- 9d agoStiggWebhook event for data export sync failure
- 11d agoStiggSub-10ms Latency and Fail-Safe Resilience for the REST-based SDKs
- 11d agoStiggRoll out Credit Configuration Changes at Scale
- 13d agoInvoiceShelf3.0 alpha.10: owners install official modules on managed hosts
- 14d agoInvoiceShelf3.0 alpha.9: role presets and admin user management
- 14d agoInvoiceShelf3.0 alpha.8: SSRF fixes and a read-only, host-ready Docker image
- 15d agoInvoiceShelf3.0 alpha.7: PDF font folder and signed-out redirect fixes
- 16d agoInvoiceShelf3.0 alpha.6: fixes that blocked fresh installs and restarts
- 16d agoInvoiceShelf3.0 alpha.5: AI assistants connect over MCP ⚡
- 25d agoStiggManage contracts in natural language with the stigg-contracts AI skill ⚡
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.