Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights

Self-hosted, non-custodial Web3 payment gateway with NO private key storage. Anonymity via HD-wallet derivation, customizable on-fly multi-chain/token support with REST API. Built on a fault-tolerant, high-performance async Rust architecture with ultra-low resource usage.

Pure Rust core library for non-custodial crypto payment processing. HD-wallet derivation, real-time EVM block monitoring, invoice management, and HMAC-signed webhooks — zero private keys, fully async, trait-based architecture

Implementacja SDK do integracji z Krajowym Systemem eFaktur w Rust

Tool for generating invoices in schemas FA (2), FA (3), PEF (3), PEF_KOR (3) and FA_RR (1)

Terminal time tracker for freelancers — infinite vertical timeline TUI + MCP server, all backed by plain markdown files.

Invoice Ninja from the terminal for humans and AI agents — scriptable Rust CLI and client library.

Invoice generation CLI

It helps. (mirror of https://git.sr.ht/~zupzup/helferlein)