Browse / Invoicing and finance
Invoicing and finance
16 invoicing and finance listings with a free or open edition: 15 with a named customization surface, 15 with an interface an agent can drive.
Adaptable means the source is public and there is a named surface to change. Operable means an agent can drive it through an interface; the reach list on each page says which jobs. One entry in the directory, describing one piece of software in one form factor. The unit of the directory.
AdaptableOperable
btcpayserver/btcpayserver
BTCPay Server
Self-hosted Bitcoin payment processor with invoices, POS apps and the Greenfield REST API.
- Yours
- Config only16 to edit
- Agent
- Official API, partial reach
- Type
- Business app · Web app
- Stack
- C#
AdaptableOperable
formancehq/ledger
Formance Ledger
Programmable core ledger for fintech: multi-posting transactions and Numscript over a REST API.
- Yours
- Config only9 to edit
- Agent
- Official API, partial reach
- Type
- Internal tool · API / service
- Stack
- Go
AdaptableOperable
juspay/hyperswitch
Hyperswitch
Open-source payments switch that routes across 100+ processors, driven by a REST API and SDKs.
- Yours
- Config only15 to edit
- Agent
- Official API, partial reach
- Type
- Business app · API / service
- Stack
- RustReScriptTypeScript
AdaptableOperable
lambdadevelopment/lambda-erp
Lambda ERP
Chat-first open-source ERP with a native MCP server, REST API and plugin seams for per-customer deployments.
- Yours
- Config only12 to edit
- Agent
- Native MCP server, partial reach
- Type
- Business app · Web app
- Stack
- PythonTypeScript
AdaptableOperablePaid edition
actualbudget/actual
Actual Budget
Local-first envelope budgeting with an official Node API package and CLI.
- Yours
- Config only14 to edit
- Agent
- Official SDK, partial reach
- Type
- Product · Web app
- Stack
- TypeScriptJavaScript
AdaptableOperable
cgrates/cgrates
CGRateS
Real-time charging and rating engine for telecom and ISPs, driven entirely by JSON-RPC APIs.
- Yours
- Config only2 to edit
- Agent
- Official API, complete reach
- Type
- Business app · API / service
- Stack
- Go
AdaptableOperable
kirill-markin/expense-budget-tracker
Expense Budget Tracker
Self-hosted expense and budget tracker on Postgres with an OAuth MCP server and a SQL agent API.
- Yours
- Config only18 to edit
- Agent
- Official MCP server, partial reach
- Type
- Product · Web app
- Stack
- TypeScript
AdaptableOperable
firefly-iii/firefly-iii
Firefly III
Self-hosted double-entry personal finance manager with a REST API that covers almost everything.
- Yours
- Config only16 to edit
- Agent
- Official API, partial reach
- Type
- Product · Web app
- Stack
- PHPJavaScript
AdaptableOperable
tomfunk/fungible
Fungible
Keyboard-first personal finance TUI with Plaid sync and a built-in MCP server and HTTP API.
- Yours
- Config only11 to edit
- Agent
- Official MCP server, partial reach
- Type
- Product · CLI
- Stack
- TypeScript
AdaptableOperable
pigontech/inkvoice
Inkvoice
One-container invoicing for freelancers: Stripe and PayPal, expenses, German e-invoicing, REST API.
- Yours
- Config only28 to edit
- Agent
- Official API, complete reach
- Type
- Business app · Web app
- Stack
- TypeScript
AdaptableOperablePaid edition
invoiceninja/invoiceninja
Invoice Ninja
Self-hostable invoicing, quotes, expenses and time tracking with a complete REST API.
- Yours
- Config only18 to edit
- Agent
- Official API, complete reach
- Type
- Business app · Web app
- Stack
- PHPJavaScriptDart
AdaptableOperable
karanb192/itr-wala
itr-wala
Claude Code, Codex and Gemini skill that prepares an Indian income tax return with a tested tax engine.
- Yours
- Light edit5 to edit
- Agent
- Native CLI, partial reach
- Type
- Skill · Skill
- Stack
- PythonShell
AdaptableOperablePaid edition
meteroid-oss/meteroid
Meteroid
Open-source subscription and usage-based billing with an official REST API and a hosted cloud.
- Yours
- Config only20 to edit
- Agent
- Official API, partial reach
- Type
- Business app · Web app
- Stack
- RustTypeScript
AdaptableOperablePaid edition
cdinnison/ray-finance
Ray Finance
Local-first AI financial advisor CLI over Plaid or Bridge bank data, bring your own model.
- Yours
- Config only18 to edit
- Agent
- Official CLI, partial reach
- Type
- Agent workflow · CLI
- Stack
- TypeScript
Adaptable
mozilla-ai/clawbolt
Clawbolt
Messaging-first AI assistant for tradespeople: estimates, QuickBooks invoices and calendar from a text thread.
- Yours
- Config only23 to edit
- Type
- Agent workflow · Agent
- Stack
- PythonTypeScript
Operable
ledger/ledger
Ledger CLI
Plain-text double-entry accounting from the command line; the CLI is the whole interface.
- Agent
- Official CLI, partial reach
- Type
- Product · CLI
- Stack
- C++Python
Machine-readable: index/vertical/invoicing-finance.json