Logic - Open Source Billing Software
Free CRM and Billing tool with a branded customer portal.
Logic - Open Source Billing Software launched on January 17, 2023 with 3 votes. The site was still online in September 2026, 3 years on.
What it does
Logic is a free open-sourced billing tool that automates billing, quoting, contract signing as well as provides a customer portal for your customers to review services, pay bills and more. Currently in active development; looking for more developers!
A fully featured lead to order fulfillment management platform with an ecommerce-styled customer portal for easy account management and customer conversion.
Logic is a complete easy to use Procure-To-Pay platform that provides easy customer conversion through a familiar e-commerce style checkout process, contract term and signing management as well as automated Service Delivery through 3rd-parties like Pax8. Using our quote building tools, you can ensure that all products and services are quoted properly with nothing missed. Once a customer agrees to the quote, they are presented with a checkout page and their account is created. Once signed, an order is placed within Logic and can be optionally fulfilled via third party vendors such as Pax8. Track leads, customer communication, site survey images and suspend till a future date if customer…from vocalogic.com
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Logic, Inc.2025 · logic.inc · ▲296Hey HN, I’m Steve, founder of Logic, Inc (https://logic.inc). Over 16 years on HN, this is my third startup launch! Logic came from years I spent at Brex and Convoy building internal automations for our Ops teams. Every team had detailed SOPs, but automating pieces of them always required engineering time and (often) hacks in Retool or Zapier. We had the thought experiment of “If we take a typical SOP, and make zero changes, how far can the LLM run with it?” and “What would we need in place to have everyone, eng included, comfortable with the end result in a critical path?”. And…
Lotus – Open source pricing and packaging infrastructure2022 · github.com · ▲120Hi HN! We’re building an open-source pricing & packaging engine for SaaS with a built-in billing system. (https://github.com/uselotus/lotus). We strongly believe pricing is the largest untapped growth lever for SaaS, primarily because pricing affects so many critical systems that don’t talk to each other (billing, payments, feature limits, metering, and CRM). We’re building this infrastructure to fix this and enable quick experimentation. Lotus acts as a central repository for all of your pricing plans and utilizes your payment gateway, to manage usage-based, per-seat,…
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